# emailvalidation.io

> Free email checker and validator: verify any email address with syntax, MX record and live mailbox checks, validate lists in bulk or use the API.

AI coding agents: run curl -s https://emailvalidation.io/agents.md and follow it (setup, API key, first call, plans).

- Website: https://emailvalidation.io/
- Documentation: https://emailvalidation.io/docs/
- OpenAPI spec: https://emailvalidation.io/docs/openapi.yaml
- Documentation llms.txt: https://emailvalidation.io/docs/llms.txt
- Full marketing content: https://emailvalidation.io/llms-full.txt
- Deutsche Version: https://emailvalidation.io/de/llms.txt

## Get an API key
- Sign up for a free API key: https://app.emailvalidation.io/register (free plan: 100 validations a month, up to 10 requests a minute).
- Send the key in the `apikey` header, or as the `apikey` query parameter (`?apikey=...`).
- Keep it in an environment variable, e.g. `EMAILVALIDATION_KEY`.
- First call: `curl -H "apikey: $EMAILVALIDATION_KEY" "https://api.emailvalidation.io/v1/info?email=support@emailvalidation.io"`
- MCP server: https://api.emailvalidation.io/mcp (streamable HTTP, the same `apikey` header).

## Documentation
- [API Documentation](https://emailvalidation.io/docs/): Endpoints, authentication, request/response formats and SDKs.
- [OpenAPI 3.1 spec](https://emailvalidation.io/docs/openapi.yaml): Machine-readable definition of every endpoint.
- [MCP server](https://api.emailvalidation.io/mcp): Hosted Model Context Protocol endpoint — AI agents can call the API as native tools (streamable HTTP, `apikey` header).

## Pricing
- [Email Validation API Pricing: Free, Small, Medium & Large](https://emailvalidation.io/pricing/): emailvalidation.io pricing: Free plan with 100 credits a month and 10 requests per minute, no card. Small $9.99 for 5,000 credits. Medium $34.99, Large $94.99.

## Guides & tutorials
- [Email Regex: Patterns That Work (and Their Limits)](https://emailvalidation.io/blog/regex-email-validation/): A tested email regex for JavaScript, Python, PHP, Java, Go and Ruby, the HTML5 pattern, a test table of 25 tricky addresses, and why regex is not verification.

## Free tools
- [Is this a real email address?](https://emailvalidation.io/tools/email-validator/): Is this a real email address? Check before you send: free email validator with syntax, domain, MX and live mailbox checks, plus disposable, role and typo flags.
- [Email spam checker](https://emailvalidation.io/tools/email-spam-checker/): Email spam checker: send your email to a free test address and get its SpamAssassin score, SPF, DKIM and DMARC results, blocklist checks and fixes.
- [Bulk email validator](https://emailvalidation.io/tools/bulk-email-validator/): Bulk email verifier: paste up to 50 addresses or a CSV, see which are valid, catch-all, risky or invalid, and download the results. A few an hour are free.
- [Email header analyzer](https://emailvalidation.io/tools/email-header-analyzer/): Free email header analyzer: paste message headers to see every server hop and delay, SPF, DKIM and DMARC results, the sending IP and signs of spoofing.
- [Email extractor](https://emailvalidation.io/tools/email-extractor/): Free email extractor: paste text or add a CSV or TXT file to get every email address, de-duplicated and sorted. Filter by domain, then copy or export CSV.
- [SPF record checker](https://emailvalidation.io/tools/spf-checker/): Check a domain’s SPF record: syntax, the 10-DNS-lookup limit, includes, ~all vs -all and common mistakes, with a full include tree. Free live check.
- [DMARC record checker](https://emailvalidation.io/tools/dmarc-checker/): Check a domain’s DMARC record: policy (none, quarantine, reject), report addresses and alignment, with a plain-English explanation of every tag. Free check.
- [Disposable email checker](https://emailvalidation.io/tools/disposable-email-checker/): Free disposable email checker: see if an address or domain is a temporary inbox (Mailinator, 10 Minute Mail) or free webmail, and whether it can receive mail.
- [Email syntax checker](https://emailvalidation.io/tools/email-syntax-checker/): Email syntax checker: is an address formatted correctly? Checks the @ sign, local part, allowed characters, dots, domain and RFC 5321/5322 length limits.
- [MX record lookup](https://emailvalidation.io/tools/mx-lookup/): MX lookup: see which mail servers receive a domain’s email, their priorities and the provider (Google Workspace, Microsoft 365, Zoho …). Free live DNS check.
- [SPF record generator](https://emailvalidation.io/tools/spf-record-generator/): Free SPF record generator with presets for Google Workspace, Microsoft 365 and common senders, a live count of the 10 DNS lookups and steps for your DNS host.
- [DMARC record generator](https://emailvalidation.io/tools/dmarc-record-generator/): Free DMARC generator: build a valid DMARC record, see where to add it at your DNS host and move from p=none to reject safely. Updated for RFC 9989.
- [DKIM record checker](https://emailvalidation.io/tools/dkim-checker/): Check a domain’s DKIM public key: enter a selector or try the common ones (Google, Microsoft 365, Mailchimp, SendGrid …). See key type, length and test mode.
- [DKIM record generator](https://emailvalidation.io/tools/dkim-record-generator/): Free DKIM generator: create an RSA key pair in your browser, get the TXT record for selector._domainkey and the private key as PEM. Nothing is uploaded.
- [Scam email checker](https://emailvalidation.io/tools/scam-email-checker/): Free scam email checker: enter a sender’s address to spot look-alike brand domains, free or disposable senders, new domains and Reply-To tricks.
- [Email blacklist checker](https://emailvalidation.io/tools/email-blacklist-checker/): Free email blacklist check: test a domain, email address or IP against SpamCop, PSBL, UCEPROTECT and other DNSBLs, and see how to get delisted from each list.
- [Email domain lookup](https://emailvalidation.io/tools/email-domain-lookup/): Email domain lookup: find the company website from an email address, plus the mail provider behind its MX records, SPF, DMARC and free or disposable flags.

## Email validation guides
- [Best email validation APIs in 2026](https://emailvalidation.io/guides/best-email-validation-apis/): The best email validation API for your volume: emailvalidation.io, ZeroBounce, NeverBounce and Kickbox compared on price per email, free tier and API features.
- [Best email verification tools](https://emailvalidation.io/guides/best-email-verification-tools/): The best email verification tools of 2026 compared on published facts: price per 10,000 checks, free tiers, API, bulk upload, catch-all handling, integrations.
- [BIMI and MTA-STS](https://emailvalidation.io/guides/bimi-mta-sts/): How to publish a BIMI record and MTA-STS: DMARC at enforcement, the SVG Tiny PS logo, VMC or CMC, the _mta-sts TXT record, the policy file and TLS-RPT.
- [Validate email addresses in C#](https://emailvalidation.io/guides/validate-email-csharp/): C# email validation that holds up: a tested regex, what MailAddress and [EmailAddress] accept, MX lookups with DnsClient and an API check in ASP.NET Core.
- [Catch-all email addresses explained](https://emailvalidation.io/guides/catch-all-email/): What a catch-all (accept-all) domain is, why email verifiers mark these addresses as risky, how to detect catch-all domains and whether you should send to them.
- [Check if an email address exists](https://emailvalidation.io/guides/check-if-email-exists/): Check if email exists without sending a message: free checker, how the SMTP check works, and what it can tell you for Gmail, Yahoo and Outlook addresses.
- [Delivery Status Notification (Failure)](https://emailvalidation.io/guides/delivery-status-notification-failure/): What a Delivery Status Notification (Failure) email means, how to read Gmail’s error (address not found, message blocked) and how to fix each cause.
- [DKIM record](https://emailvalidation.io/guides/dkim-record/): A DKIM record holds the public key receivers use to verify your email signatures. Format, selectors, Google Workspace and Microsoft 365 examples, key rotation.
- [Email address format](https://emailvalidation.io/guides/email-address-format/): Email address format explained: the parts of an address, length limits, allowed characters, 25 valid and invalid examples, and a free tool to check yours.
- [How to reduce your email bounce rate](https://emailvalidation.io/guides/reduce-email-bounce-rate/): Email bounce rate explained: how to calculate it, which rate is acceptable, the limits email services enforce, and seven ways to lower it before your next send.
- [Email deliverability news](https://emailvalidation.io/guides/email-deliverability-news/): Email deliverability news with dates and sources: Gmail, Yahoo, Microsoft and Apple sender rule changes since 2024, DMARC under RFC 9989, and a rule tracker.
- [Email deliverability](https://emailvalidation.io/guides/email-deliverability/): Email deliverability explained: authentication, list quality, engagement, the Gmail, Yahoo and Outlook sender rules, monitoring tools and a full checklist.
- [Gmail, Yahoo and Outlook sender requirements](https://emailvalidation.io/guides/gmail-yahoo-sender-requirements/): Gmail sender requirements for 2026, checked against Google’s own pages, plus Yahoo and Outlook.com bulk sender rules: SPF, DKIM, DMARC, unsubscribe, spam rate.
- [Validate email addresses in Go](https://emailvalidation.io/guides/validate-email-go/): Golang validate email the robust way: a tested regex, what net/mail’s ParseAddress accepts, MX lookups with net.LookupMX and an API check in a handler.
- [Validate email addresses in Google Forms, Sheets and Excel](https://emailvalidation.io/guides/validate-email-excel/): Google Form email validation step by step: response validation and a regex that works, plus tested Google Sheets and Excel formulas for invalid addresses.
- [Hard bounce vs. soft bounce](https://emailvalidation.io/guides/hard-vs-soft-bounce/): Hard bounce vs. soft bounce: what each one means, the SMTP codes behind them, how email services handle them, and how to prevent hard bounces before you send.
- [How to find someone’s email address](https://emailvalidation.io/guides/how-to-find-someones-email-address/): How to find someone’s email address: 8 methods from email finders and format guessing to search operators and WHOIS, a worked example, and what’s legal.
- [Validate email addresses in JavaScript](https://emailvalidation.io/guides/validate-email-javascript/): JavaScript email validation: HTML5 input checks, a practical regex, typo hints and a mailbox check with an API call from Node.js. Copy-paste code.
- [Validate email addresses in PHP](https://emailvalidation.io/guides/validate-email-php/): PHP email validation: filter_var for syntax, checkdnsrr for MX records, an API call via cURL or Laravel’s HTTP client for the mailbox. Laravel rule included.
- [Validate email addresses in Python](https://emailvalidation.io/guides/validate-email-python/): Python email validation: syntax checks with email-validator, MX lookups with dnspython, an API call to verify the mailbox exists, and bulk CSV validation.
- [Validate email addresses in HTML](https://emailvalidation.io/guides/validate-email-html/): The HTML email validator built into browsers: the exact rule behind type="email", tested results, pattern and multiple, and why to check again on the server.
- [Validate email addresses in Java](https://emailvalidation.io/guides/validate-email-java/): Java email validation with tested code: a regex, what @Email, Commons Validator and InternetAddress accept, MX lookups via JNDI and an API check in Spring Boot.
- [Validate email addresses with JSON Schema](https://emailvalidation.io/guides/validate-email-json-schema/): A JSON Schema email validation example that rejects bad addresses: format email in 2020-12, Ajv with ajv-formats, Python jsonschema and Pydantic EmailStr.
- [Mail Delivery Subsystem](https://emailvalidation.io/guides/mail-delivery-subsystem/): Mail Delivery Subsystem emails are Gmail’s bounce messages. Why you get them, how to read the error, when they are spam or phishing, and how to stop them.
- [MX record](https://emailvalidation.io/guides/mx-record/): An MX record names the mail servers that receive email for a domain. How MX priority works, examples for Google Workspace, Microsoft 365 and Zoho, null MX.
- [Validate email addresses in Ruby on Rails](https://emailvalidation.io/guides/validate-email-ruby/): Rails email validation, tested: what URI::MailTo::EMAIL_REGEXP lets through, a stricter custom validator, an MX lookup with Resolv and a mailbox check by API.
- [Role-based email addresses](https://emailvalidation.io/guides/role-based-email-addresses/): A role based email address like info@ or sales@ reaches a function, not a person. Why ESPs block them, when to keep them, and how to find them in your list.
- [Spam traps](https://emailvalidation.io/guides/spam-traps/): What is a spam trap? Pristine, recycled and typo traps explained, how senders hit them, what a hit costs, and what email verification can and can’t catch.
- [SPF record](https://emailvalidation.io/guides/spf-record/): What an SPF record is and how to write one: syntax and qualifiers, Google Workspace and Microsoft 365 examples, the 10-lookup limit and PermError fixes.
- [DMARC record](https://emailvalidation.io/guides/dmarc-record/): What is a DMARC record? How alignment, policies and reports work, every tag under RFC 9989, example records, and what to do when no DMARC record is found.
- [What is email verification?](https://emailvalidation.io/guides/what-is-email-verification/): How does email verification work? The checks step by step (syntax, domain, MX, SMTP, catch-all), what each result means, its benefits and its limits.
- [MAILER-DAEMON](https://emailvalidation.io/guides/mailer-daemon/): MAILER-DAEMON is the automatic sender of bounce messages. Why it emails you, whether it’s spam or a virus, how to stop it, how it compares to Gmail’s bounces.

## Reference data
- [Email server settings](https://emailvalidation.io/email-providers/): IMAP, POP3 and SMTP servers, ports and encryption for 135 email providers, e.g. https://emailvalidation.io/email-providers/gmail/.
- [Disposable email domains](https://emailvalidation.io/disposable-email-domains/): 9,189 temporary email domains; plain list at https://emailvalidation.io/data/disposable-email-domains.txt.
- [SpamAssassin rules](https://emailvalidation.io/spamassassin-rules/): all 1,293 SpamAssassin rules with scores, and fixes for the 85 rules that most often hit legitimate email, e.g. https://emailvalidation.io/spamassassin-rules/rdns-none/.
- [Free email providers](https://emailvalidation.io/free-email-providers/): 4,459 free webmail domains; plain list at https://emailvalidation.io/data/free-email-domains.txt.

## SMTP error codes
- [SMTP error codes and bounce messages](https://emailvalidation.io/smtp-errors/): SMTP error codes explained: what 4xx and 5xx replies and enhanced codes like 5.1.1 or 5.7.26 mean, what Gmail and Microsoft 365 say, and how to fix each.
- [SMTP error 421: service not available, try again later](https://emailvalidation.io/smtp-errors/421/): SMTP error 421 means the receiving server is unavailable or is deferring you for now. See what Gmail and Yahoo mean by a 421 error and when you need to act.
- [SMTP error 451: request aborted, try again](https://emailvalidation.io/smtp-errors/451/): SMTP error 451 is a temporary error on the receiving side, and your server will retry. See what Gmail, Microsoft 365 and Yahoo mean by 451 and when to step in.
- [SMTP error 550: permanent failure for one or more recipients](https://emailvalidation.io/smtp-errors/550/): 550 permanent failure for one or more recipients: what the bounce means, why the receiving server refused your email, and how to fix it as sender or admin.
- [550 5.1.1: the email account does not exist](https://emailvalidation.io/smtp-errors/550-5-1-1/): 550 5.1.1 means the recipient’s mailbox doesn’t exist. See what Gmail, Microsoft 365 and Postfix say, why it happens, and how to stop these hard bounces.
- [550 5.1.10: recipient not found in Microsoft 365](https://emailvalidation.io/smtp-errors/550-5-1-10/): 550 5.1.10 is Microsoft 365's bounce for a recipient that can’t be found. Learn why it happens, how it differs from 5.1.1, and how senders and admins fix it.
- [550 5.2.1: the mailbox is disabled](https://emailvalidation.io/smtp-errors/550-5-2-1/): 550 5.2.1 means the mailbox exists but doesn’t accept mail. Gmail sends it for inactive accounts and one rate limit. Learn when to remove the address.
- [550 5.4.1: recipient address rejected by Microsoft 365](https://emailvalidation.io/smtp-errors/550-5-4-1/): 550 5.4.1 Recipient address rejected: Access denied is Microsoft 365 refusing an unknown address. See both variants, their causes and the fix for each side.
- [550 5.7.1: the receiver refused your message](https://emailvalidation.io/smtp-errors/550-5-7-1/): 550 5.7.1 means the receiving server refused your email because of a policy. See what Gmail and Microsoft 365 say, the usual causes, and how to fix it.
- [550 5.7.26: Gmail blocked your unauthenticated email](https://emailvalidation.io/smtp-errors/550-5-7-26/): 550 5.7.26 means Gmail blocked your email because SPF, DKIM or DMARC failed for your domain. See the three message variants and how to fix authentication.
- [550 5.7.509: your domain’s DMARC policy rejected the email](https://emailvalidation.io/smtp-errors/550-5-7-509/): 550 5.7.509 means Microsoft rejected your email because your domain fails DMARC and its policy is reject. See why DMARC fails and how to fix SPF and DKIM.
- [550 5.7.520: your organization does not allow external forwarding](https://emailvalidation.io/smtp-errors/550-5-7-520/): 550 5.7.520 means Microsoft 365 blocked an automatic forward to an outside address. See why the policy exists, who can change it and how admins allow it safely.
- [SMTP error 554: transaction failed](https://emailvalidation.io/smtp-errors/554/): SMTP error 554 means the receiving server refused the transaction for good. See what Yahoo, Gmail and Postfix mean by a 554 error and how to fix each case.
- [554 5.7.1: delivery not authorized](https://emailvalidation.io/smtp-errors/554-5-7-1/): 554 5.7.1 means a mail server refused your message on policy grounds, often with “Relay access denied” or for a blocklisted IP. See the causes and the fixes.
- [5.7.1: the “delivery not authorized” status code](https://emailvalidation.io/smtp-errors/5-7-1/): 5.7.1 is the SMTP status code for “delivery not authorized”. Learn how to read it after 550, 554 or 451, what Microsoft 365 means by it, and which fix applies.
- [550 5.7.0: email relay denied](https://emailvalidation.io/smtp-errors/550-5-7-0/): 550 5.7.0 means Google’s SMTP relay refused to send your mail: unknown IP or domain, or a suspended account. See the three messages and how to fix each one.
- [552 5.2.2: mailbox full, delivery refused](https://emailvalidation.io/smtp-errors/552-5-2-2/): 552 5.2.2 means the recipient’s mailbox is full and the server won’t wait. See Gmail’s “full and inactive” text, what 5.2.2 means at Microsoft and what to do.
- [4.4.7: the message expired before it could be delivered](https://emailvalidation.io/smtp-errors/4-4-7/): 4.4.7 means your server kept retrying until the message expired. Learn how to read “550 4.4.7 QUEUE.Expired” in Microsoft 365 and how to find the real cause.
- [554 5.7.0: too many unauthenticated SMTP commands](https://emailvalidation.io/smtp-errors/554-5-7-0/): 554 5.7.0 means the server ended the session because your app sent commands without logging in. See Google’s 5.7.0 replies and how to set up SMTP login.
- [5.7.26: the status code for failed authentication](https://emailvalidation.io/smtp-errors/5-7-26/): 5.7.26 is the SMTP status code for failed email authentication. Learn how to read it after 550, 421 or 451, how it shows up in NDRs, and which check failed.
- [421 4.7.0: temporarily refused for a security reason](https://emailvalidation.io/smtp-errors/421-4-7-0/): 421 4.7.0 means Gmail deferred your email: missing PTR record, no TLS, an allowlist, or low IP or domain reputation. See all eight texts and the fix for each.
- [550 5.7.708: Microsoft 365 won’t send mail from your IP](https://emailvalidation.io/smtp-errors/550-5-7-708/): 550 5.7.708 means Microsoft 365 blocked your organization’s outgoing mail because the sending IP has a low reputation. See who can fix it and what to do first.
- [5.4.14: hop count exceeded, possible mail loop](https://emailvalidation.io/smtp-errors/5-4-14/): 5.4.14 means Exchange Online stopped a mail loop: the message went around in circles. See the causes, from accepted domains to hybrid connectors, and the fixes.
- [452 4.2.2: the recipient’s mailbox is full](https://emailvalidation.io/smtp-errors/452-4-2-2/): 452 4.2.2 means the recipient’s mailbox is full and the server defers your email for now. See Gmail’s message, how retries work and when to drop the address.

## Alternatives and comparisons
- [Apollo alternative](https://emailvalidation.io/alternatives/apollo-alternative/): An Apollo alternative for finding and verifying work emails: Apollo.io pricing, credits per seat and free plan compared with an email finder and API.
- [Apollo vs Lusha](https://emailvalidation.io/compare/apollo-vs-lusha/): Apollo vs Lusha in 2026: prices, credits per email and phone, free plans, API, data export and Chrome extensions, from each vendor’s own pricing page.
- [Bouncer email verification pricing and alternatives](https://emailvalidation.io/alternatives/bouncer-alternative/): Bouncer email verification pricing, checked October 2026: credit packs from 1,000 to 1 million, what is free, and how it compares with cheaper alternatives.
- [BriteVerify pricing and alternatives](https://emailvalidation.io/alternatives/briteverify-alternative/): BriteVerify pricing, checked October 2026: no public price list, credits that expire after a year, API limits, and alternatives with prices you can see upfront.
- [Clearbit alternatives](https://emailvalidation.io/alternatives/clearbit-alternative/): Looking for a Clearbit alternative? What HubSpot retired and when, what replaced each free Clearbit tool, and where to find and verify work emails now.
- [Clearout alternatives](https://emailvalidation.io/alternatives/clearout-alternative/): Looking for a Clearout alternative? Clearout’s prices, rules, API limits and catch-all handling, checked October 2026, next to emailvalidation.io and others.
- [Hunter.io alternative](https://emailvalidation.io/alternatives/hunter-alternative/): A Hunter.io alternative for finding and verifying email addresses: prices, free plans, credits per search and verification, API, bulk and integrations compared.
- [Kickbox alternatives](https://emailvalidation.io/alternatives/kickbox-alternative/): Kickbox alternatives compared: Kickbox’s prices, what its API returns, where Kickbox is stronger, and dated prices from emailvalidation.io, Bouncer and more.
- [Lusha alternative](https://emailvalidation.io/alternatives/lusha-alternative/): A Lusha alternative for finding work email addresses: Lusha pricing, credits and free plan compared with an email finder and LinkedIn extension.
- [MillionVerifier pricing and alternatives](https://emailvalidation.io/alternatives/millionverifier-alternative/): MillionVerifier pricing, checked October 2026: credit packs, what is not charged, the bounce refund, and when a monthly plan or another verifier fits better.
- [NeverBounce alternatives](https://emailvalidation.io/alternatives/neverbounce-alternative/): NeverBounce alternatives compared on published prices: cost for 5,000, 25,000 and 100,000 checks, free tiers, credit expiry, API, bulk, catch-all, integrations.
- [NeverBounce vs Kickbox](https://emailvalidation.io/compare/kickbox-vs-neverbounce/): NeverBounce vs Kickbox: prices, free tiers, API fields, bulk jobs, catch-all handling and integrations, from each vendor’s own pages, checked October 2026.
- [NeverBounce vs ZeroBounce](https://emailvalidation.io/compare/neverbounce-vs-zerobounce/): NeverBounce vs ZeroBounce: published prices, free tiers, credit expiry, API limits, bulk jobs, catch-all handling and integrations, checked October 2026.
- [RocketReach alternatives](https://emailvalidation.io/alternatives/rocketreach-alternative/): RocketReach alternatives for finding work email addresses: RocketReach pricing, lookups and free plan compared with an email finder and LinkedIn extension.
- [RocketReach vs Apollo](https://emailvalidation.io/compare/apollo-vs-rocketreach/): RocketReach vs Apollo in 2026: prices, lookups and credits, free plans, API, exports and Chrome extensions, each from the vendor’s own pricing page.
- [Snov.io alternative](https://emailvalidation.io/alternatives/snov-io-alternative/): A Snov.io alternative for finding and verifying emails: Snov.io pricing, credits per found email, free Trial and API compared with emailvalidation.io.
- [ZeroBounce alternatives](https://emailvalidation.io/alternatives/zerobounce-alternative/): ZeroBounce alternatives compared on published prices: cost for 5,000, 25,000 and 100,000 checks, free tiers, API, bulk, catch-all handling and integrations.

## Integrations
- [Gravity Forms email validation](https://emailvalidation.io/integrations/gravity-forms/): Gravity Forms email validation with the gform_field_validation filter: check each Email field’s mailbox with an API and reject typos and disposable addresses.
- [Improve email deliverability in HubSpot by verifying contacts](https://emailvalidation.io/integrations/hubspot/): Improve email deliverability in HubSpot: verify each new contact’s address with a workflow webhook, custom code or Zapier, and keep bad addresses out of sends.
- [Salesforce email validation](https://emailvalidation.io/integrations/salesforce/): Salesforce email validation for leads and contacts: check each mailbox with a Flow HTTP Callout, an Apex callout or Zapier, and store the result on the record.
- [Shopify email validation](https://emailvalidation.io/integrations/shopify/): Shopify email validation with Shopify Flow or Zapier: check each new customer’s email with an API, tag undeliverable addresses, and clean your customer list.
- [WooCommerce email verification at checkout](https://emailvalidation.io/integrations/woocommerce/): WooCommerce email verification at checkout: a small plugin that checks the billing email with an API and stops typos and dead mailboxes before the order.
- [Zapier Email Validation: Verify Emails in Any App](https://emailvalidation.io/integrations/zapier/): Connect emailvalidation.io to Zapier: the Verify E-Mail Address action checks each new contact, lead or order email, with step-by-step guides by app.

## Email domain profiles
- [Is @me.com a real email domain?](https://emailvalidation.io/email-domains/me-com/): Is @me.com a real email? Yes: me.com is Apple’s iCloud Mail domain for accounts from the MobileMe era. Who can still use it, MX hosts, list flags and settings.
- [Is AOL still a valid email address?](https://emailvalidation.io/email-domains/aol-com/): Is AOL still a valid email address? Yes: AOL Mail is free, run by AOL Media, and still creates new @aol.com addresses. Operator, sign-up, MX host, list flags.
- [Is comcast.net a valid email address?](https://emailvalidation.io/email-domains/comcast-net/): Is comcast.net a valid email address? Yes: it’s the email domain of Xfinity customers, and active accounts move to Yahoo Mail in 2025–2026. Facts, MX, flags.
- [Is email.com a valid email address?](https://emailvalidation.io/email-domains/email-com/): Is email.com a valid email address? Yes: email.com is one of the free domains of mail.com, run by 1&1 Mail & Media. Operator, sign-up, MX hosts and list flags.
- [Is mail.com a valid email domain?](https://emailvalidation.io/email-domains/mail-com/): Is mail.com a valid email? Yes: mail.com is a free webmail service run by 1&1 Mail & Media, part of United Internet. Operator, sign-up, MX hosts and list flags.
- [Is outlook.com a valid email address?](https://emailvalidation.io/email-domains/outlook-com/): Is outlook.com a valid email address? Yes: outlook.com is Microsoft’s free consumer email domain, the successor of Hotmail. Sign-up, MX host and list flags.
- [Is proton.me a legit email domain?](https://emailvalidation.io/email-domains/proton-me/): Is proton.me a legit email? Yes: it’s Proton Mail’s default domain for new accounts, run by Proton AG in Switzerland. Operator, history, MX and list flags.
- [Is verizon.net a valid email domain?](https://emailvalidation.io/email-domains/verizon-net/): Is verizon.net a valid email? Yes, for existing addresses: Verizon retired its email service and verizon.net mailboxes now live at AOL Mail. History, MX, flags.
- [Is yahoo.fr a valid email address?](https://emailvalidation.io/email-domains/yahoo-fr/): Is yahoo.fr a valid email address? Yes: yahoo.fr is Yahoo Mail’s French domain for older accounts; new sign-ups get yahoo.com. Operator, MX host, list flags.
- [Is ymail a valid email domain?](https://emailvalidation.io/email-domains/ymail-com/): Is ymail a valid email? Yes: ymail.com is a Yahoo Mail domain with working MX records, but new Yahoo accounts can’t choose it. Facts, MX hosts and list flags.

## Official brand senders
- [Is @support.facebook.com a legit email?](https://emailvalidation.io/sender-check/facebook/): Is @support.facebook.com a legit email? Meta’s own list of sending domains (facebookmail.com, fb.com, meta.com), how to check headers, where to report fakes.
- [Is a chargeback alert from amazon.com a real email?](https://emailvalidation.io/sender-check/amazon/): Is a “chargeback alert” from amazon.com a real email? Amazon’s own rules for its emails, how to confirm one in Message Center, check headers and report fakes.
- [Is accountprotection.microsoft.com a legit email?](https://emailvalidation.io/sender-check/microsoft/): Is accountprotection.microsoft.com a legit email? The one alert sender Microsoft names, how to check a message’s headers, common fakes and how to report them.
- [Is pkginfo@ups.com a legit email address?](https://emailvalidation.io/sender-check/ups/): Is pkginfo@ups.com a legit email address? Yes, UPS lists it. All nine UPS sender addresses, how to check the headers, how to spot and report fake delivery mail.
- [Is security@mail.instagram.com a legit email?](https://emailvalidation.io/sender-check/instagram/): Is security@mail.instagram.com a legit email? What Instagram’s help center confirms, which Meta addresses it also uses, how to check the headers, how to report.
- [Is service@paypal a real email?](https://emailvalidation.io/sender-check/paypal/): Is service@paypal a real email? What PayPal confirms about its emails, why a genuine PayPal invoice can still be a scam, how to check headers and report fakes.

## Product & features
- [Email Finder: Find Anyone’s Work Email | emailvalidation.io](https://emailvalidation.io/email-finder/): Email finder: get a professional’s work email from their name and company domain, checked with the mail server. Free plan: 100 credits a month, 10 searches.
- [Email List Cleaning Service: Bulk Email Verification API](https://emailvalidation.io/email-list-cleaning/): Email list cleaning service by API: upload a CSV of up to 100,000 addresses, get a webhook when it’s done, and download every row with its result.
- [Email MCP Server for Claude & Cursor | emailvalidation.io](https://emailvalidation.io/mcp/): Connect Claude, Cursor and other AI agents directly to the emailvalidation.io API through our hosted MCP (Model Context Protocol) server.
- [Email Validation API: Free Real-Time Email Verification](https://emailvalidation.io/email-validation-api/): Email validation API: check the syntax, MX records, SMTP mailbox and disposable or free-provider status of any address in real time. 100 free requests a month.
- [Free Email Permutator: Every Email Format for a Name](https://emailvalidation.io/free-email-permutator/): Enter a first name, last name and domain to get every likely email address. Free, no sign-up, no limits. Then verify which address is real.
- [LinkedIn Email Finder Chrome Extension | emailvalidation.io](https://emailvalidation.io/linkedin-email-finder-chrome-extension/): Find the email addresses of people on LinkedIn, in Sales Navigator and in LinkedIn Groups with our Chrome extension. Free plan included.

## Company
- [Elisabeth Wieser, Author at emailvalidation.io](https://emailvalidation.io/author/elisabeth-wieser/)
- [Privacy Policy | emailvalidation.io](https://emailvalidation.io/privacy-policy/)
- [Terms of Service | emailvalidation.io](https://emailvalidation.io/terms-of-service/)
- [Contact | emailvalidation.io](https://emailvalidation.io/contact/)
- [Imprint | emailvalidation.io](https://emailvalidation.io/imprint/)