DocuPost vs MailStream
DocuPost
docupost.com
MailStream
mailstream.appSide by side
| Figure | DocuPost | MailStream |
|---|---|---|
| Price from | $9.95/mo | — |
| Free plan | Yes | — |
| Free trial | — | — |
| Open source | — | — |
| Web | Yes | Yes |
| API | Yes | Yes |
| Plans published | 6 | 0 |
| Spec score · Direct Mail Automation Software | 9.1 (#2) | 7.3 (#18) |
| Company | The about page identifies David Nelson as CEO and founder; the privacy policy identifies the operator as Nelson Ventures, LLC doing business as DocuPost, LLC, an Iowa LLC. | The About page names Jake Fassnacht, Jeff Kingsford, and Marton Gergely as co-founders and says Jeff founded an online printing and marketing company that operated from 1998 to 2018. |
| Integrations | Listed integrations are Zapier, Clio, FileVine, HubSpot, QuickBooks Online, Xero and Google Docs. | The integrations page describes Planning Center as available and lists several others, including Shopify, Zapier, Make, and n8n, as coming soon. |
| Letters | Letters support black-and-white or color printing, single- or double-sided output and USPS Standard, First Class and Priority options. | Letters can be created from HTML templates or uploaded as PDFs, personalized with merge variables, and sent in #10 double-window envelopes. |
| Postcards | Postcards use glossy, UV-coated stock with full-color printing and customizable designs. | Postcards are available in 4×6, 6×9, and 6×11 inch sizes, with full-bleed printing on premium stock. |
| Support | Premium includes priority support ticket access, while Enterprise includes dedicated customer support. | The security page says MailStream will share SOC 2 reports, complete security questionnaires, and arrange calls with its security team. |
| Tracking | The service offers USPS tracking, Certified Mail, Priority Mail and return-receipt options. | Mail pieces use USPS Intelligent Mail barcodes, with status available through the dashboard, API, or webhooks. |
| What it does | DocuPost lets businesses upload or compose letters, postcards and checks online for printing, stamping and USPS mailing. | MailStream provides a self-serve platform, REST API, and MCP server for sending physical postcards and letters. |
Plans
DocuPost
- FreeFree
- Letters$0.95, paid once
- Postcards$0.99, paid once
- Checks$2, paid once
- Premium$9.95 a month
- Enterprise$99.95 a month
In their own words
DocuPost
DocuPost lets users upload or compose documents online and have letters, postcards, and checks printed and mailed. Letters can be sent individually or in bulk, in black-and-white or color and single- or double-sided, with mail-merge tokens. The letter service accepts documents up to 500 pages. Mailing options include USPS First Class, Standard Class, international mail, Certified Mail, return receipts, and Priority Mail Express, described as arriving in as little as 1–2 days. Tracking options include USPS Tracking, Certified Mail, Priority Mail, and return receipts. DocuPost describes its letter service as HIPAA-compliant with a signed BAA, while its privacy policy says it cannot guarantee the safety or security of personal information. Listed integrations include Zapier, Clio, FileVine, HubSpot, QuickBooks Online, Xero, Google Docs, and a developer API. The Free plan has no send limits but charges per mailpiece, includes DocuPost branding on cover letters, and retains documents for 90 days. Premium costs $9.95 a month; Enterprise costs $99.95 a month.
MailStream
MailStream provides a self-serve platform, REST API, and MCP server for sending physical postcards and letters domestically. Postcards are offered in 4×6, 6×9, and 6×11 inch sizes, while letters use HTML templates or uploaded PDFs in white #10 double-window envelopes. A browser HTML and CSS editor supports personalized designs, reusable templates, and print proofs. Variable fields can add names, offer codes, QR links, account numbers, and balances. MailStream says it CASS-verifies addresses before printing and flags invalid or incomplete entries. USPS Intelligent Mail barcodes expose status through the dashboard, API, or webhooks. Printing and USPS handoff are listed at 1 to 2 business days, for campaigns targeting 10 to 100,000 addresses. Integrations include Shopify, Zapier, Make, n8n, and HTTP tools. The hosted MCP server lists 27 tools. A free plan is available; paid access starts at $99/mo. Security features include TLS 1.2 or higher, AES-256 at-rest encryption, annual SOC 2 Type 2 audits, and HIPAA handling with BAAs.