Independent research · Source-linked guidance
Transparent provenance

Evidence and source ledger

Every source used to separate merchant claims, official facts, independent guidance, competitor data, and audience signals.

Merchant documentation

  1. Thanks.io pricing page — Merchant documentation · thanks.io · Merchant-controlled · checked 2026-10-24
  2. Thanks.io home page — Merchant documentation · thanks.io · Merchant-controlled · checked 2026-10-24
  3. Thanks.io FAQ, How does Thanks.io work — Merchant documentation · thanks.io · Merchant-controlled · checked 2026-10-24
  4. Thanks.io FAQ, What mail types can I send — Merchant documentation · thanks.io · Merchant-controlled · checked 2026-10-24
  5. Thanks.io FAQ, How long does direct mail take to deliver — Merchant documentation · thanks.io · Merchant-controlled · checked 2026-10-24
  6. Thanks.io FAQ, What is the minimum order — Merchant documentation · thanks.io · Merchant-controlled · checked 2026-10-24
  7. Thanks.io FAQ, Can I track direct mail with QR codes — Merchant documentation · thanks.io · Merchant-controlled · checked 2026-10-24
  8. Thanks.io FAQ, Does Thanks.io have an API — Merchant documentation · thanks.io · Merchant-controlled · checked 2026-10-24
  9. Thanks.io terms of service — Merchant documentation · thanks.io · Merchant-controlled · checked 2026-10-24
  10. Thanks.io about page — Merchant documentation · thanks.io · Merchant-controlled · checked 2026-10-24
  11. Thanks.io FAQ, How much does Thanks.io cost — Merchant documentation · thanks.io · Merchant-controlled · checked 2026-10-24
  12. Thanks.io FAQ, How do I automate direct mail from my CRM — Merchant documentation · thanks.io · Merchant-controlled · checked 2026-10-24
  13. Thanks.io FAQ, Can I send a single postcard — Merchant documentation · thanks.io · Merchant-controlled · checked 2026-10-24
  14. Thanks.io API documentation — Merchant documentation · docs.thanks.io · Merchant-controlled · checked 2026-10-24
  15. Thanks.io comparison page — Merchant documentation · thanks.io · Merchant-controlled · checked 2026-10-24

Alternative provider

  1. Handwrytten home page — Alternative provider · handwrytten.com · Publisher independence not verified · checked 2026-10-24
  2. Simply Noted home page — Alternative provider · simplynoted.com · Publisher independence not verified · checked 2026-10-24
  3. Lob pricing page — Alternative provider · lob.com · Publisher independence not verified · checked 2026-10-24
  4. PostGrid print and mail pricing page — Alternative provider · postgrid.com · Publisher independence not verified · checked 2026-10-24
  5. Handwrytten pricing page — Alternative provider · handwrytten.com · Publisher independence not verified · checked 2026-10-24
  6. Handwrytten about page with FAQ — Alternative provider · handwrytten.com · Publisher independence not verified · checked 2026-10-24
  7. Handwrytten API documentation — Alternative provider · handwrytten.com · Publisher independence not verified · checked 2026-10-24
  8. Simply Noted pricing and plans page — Alternative provider · simplynoted.com · Publisher independence not verified · checked 2026-10-24
  9. Postalytics direct mail pricing page — Alternative provider · postalytics.com · Publisher independence not verified · checked 2026-10-24
  10. PostPilot pricing page — Alternative provider · postpilot.com · Publisher independence not verified · checked 2026-10-24

Regulatory guidance

  1. USPS Every Door Direct Mail page — Regulatory guidance · usps.com · Publisher independence not verified · checked 2026-10-24
  2. eCFR, 16 CFR Part 255, Guides concerning use of endorsements and testimonials in advertising — Regulatory guidance · ecfr.gov · Publisher independence not verified · checked 2026-10-24
  3. USPS Domestic Mail Manual, 243 Prices and Eligibility for USPS Marketing Mail — Regulatory guidance · pe.usps.com · Publisher independence not verified · checked 2026-10-24
  4. USPS Domestic Mail Manual, 100 Retail Mail Letters, Cards, Flats, and Parcels — Regulatory guidance · pe.usps.com · Publisher independence not verified · checked 2026-10-24
  5. USPS Domestic Mail Manual, 201 Physical Standards for Commercial Letters, Cards, Flats, and Parcels — Regulatory guidance · pe.usps.com · Publisher independence not verified · checked 2026-10-24
  6. USPS Domestic Mail Manual, 602 Addressing — Regulatory guidance · pe.usps.com · Publisher independence not verified · checked 2026-10-24