letterstream.com valid

Send Mail Online: The Easiest, Fastest Way To Send Real Mail Online

LetterStream is a print\-to\-mail solution: send First\-Class and Certified Mail, FedEx 2Day, and postcards\. No minimum or monthly fees

For agents: Print-to-mail service to send First-Class, Certified Mail, FedEx 2Day and postcards online with no monthly fees; API and pricing pages available.

send mail onlinecertified mailprint to mailpostcardsmail api

Their llms.txt

The beginning of the file, from our validated copy saved 2026-10-20T18:34:21.391Z. Cached copy · Source on letterstream.com

# Send Mail Online: The Easiest, Fastest Way To Send Real Mail Online

> LetterStream is a print\-to\-mail solution: send First\-Class and Certified Mail, FedEx 2Day, and postcards\. No minimum or monthly fees

Generated by Yoast SEO v28.3, this is an llms.txt file, meant for consumption by LLMs.

## Pages
- [About](https://www.letterstream.com/about/)
- [Contact](https://www.letterstream.com/contact/)
- [TOS](https://www.letterstream.com/terms/)
- [Privacypolicy](https://www.letterstream.com/privacy-policy/)
- [API](https://www.letterstream.com/api/)
- [products](https://www.letterstream.com/products/)
- [Pricing](https://www.letterstream.com/pricing/)
- [letter\-options](https://www.letterstream.com/letter-options/)
- [Certified\-Mail](https://www.letterstream.com/certified-mail/)
- [fedex](https://www.letterstream.com/fedex/)
- [APPS\-Integrations](https://www.letterstream.com/apps-integrations/)
- [How\-to\-videos](https://www.letterstream.com/howtovideo/)
- [flats\-options](https://www.letterstream.com/flats-options/)
- [cass](https://www.letterstream.com/cass/)
- [core\-values](https://www.letterstream.com/core-values/)

## Posts
- [LetterStream Is Heading to CINC Up 2026](https://www.letterstream.com/blog/16-years-with-cinc-letterstream-is-heading-to-cinc-up-2026/)
- [USPS July 2026 Postage Rate Increase: What Businesses Need to Know](https://www.letterstream.com/blog/usps-july-2026-postage-rate-increase-what-businesses-need-to-know/)
- [HOA Violation Letter Mailing: Complete Guide to Proper Mailing and Documentation](https://www.letterstream.com/blog/hoa-violation-letter-mailing-complete-guide-to-proper-mailing-and-documentation/)
- [How to Track Certified Mail Online: Complete Guide for Reliable Mail Monitoring](https://www.letterstream.com/blog/how-to-track-certified-mail-online-complete-guide-for-reliable-mail-monitoring/)
- [Physical Mail Automation: Streamline Your Business Mail Operations in 2026](https://www.letterstream.com/blog/physical-mail-automation-streamline-your-business-mail-operations-in-2026/)

## Optional
- [Sitemap index](https://www.letterstream.com/sitemap_index.xml)

Related sites

Other listed sites in Business software. See the whole category →

Machine-readable: GET /v1/resolve?q=letterstream.com · GET /v1/domain/letterstream.com · this page as Accept: application/json or text/markdown · MCP lookup_domain

Automatically discovered from public files. Inclusion does not imply endorsement or publisher participation.

Claim my listing on Agent Web Map for letterstream.com:
1. POST https://agentwebmap.com/v1/sites/letterstream.com/claims and keep claim_id and claim_secret private.
2. Publish the proof: add the line "AgentWebMap ownership: <token>" (token from step 1) to https://letterstream.com/llms.txt, or use the DNS, meta-tag or well-known method the response describes.
3. POST https://agentwebmap.com/v1/sites/letterstream.com/verify with {"claim_id": "...", "claim_secret": "..."}.
4. Save the api_key from the answer; it manages the listing (PATCH https://agentwebmap.com/v1/sites/letterstream.com).
MCP equivalent: tools begin_ownership_claim, then verify_domain, at https://agentwebmap.com/mcp. Docs: https://agentwebmap.com/docs#verify

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