DocuPost
7.3#4 in direct mail automation softwareFrom $9.95 a monthFree planWebAPI
VisitDocuPost vs MailStream
MailStream
5.7#23 in direct mail automation softwareWebAPI
VisitWhat both publish
| Fact | DocuPost | MailStream |
|---|---|---|
| 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. |
DocuPost plans
- 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
MailStream plans
No prices published.
Pick DocuPost if…
DocuPost suits individuals and organizations that need to send physical mail online, from occasional letters to bulk mailings. Its listed formats and integrations may suit businesses coordinating mail with other services.
Pick MailStream if…
MailStream suits developers, AI agents, agencies, SaaS teams, and business operators automating direct-mail campaigns. Its API, MCP server, personalization, and tracking options also fit teams that want to connect mail workflows to other tools.