MailStream vs Postalytics
MailStream
mailstream.app
Postalytics
postalytics.comSide by side
| Figure | MailStream | Postalytics |
|---|---|---|
| Price from | — | $199/mo |
| Free plan | — | Yes |
| Free trial | — | — |
| Open source | — | — |
| Web | Yes | Yes |
| iOS | — | Yes |
| Android | — | Yes |
| API | Yes | Yes |
| Plans published | 0 | 4 |
| Spec score · Direct Mail Automation Software | 7.3 (#18) | 8.9 (#3) |
| Audience | MailStream describes itself as serving developers, AI agents, teams, agencies, SaaS businesses, and operators automating direct mail. | Postalytics describes the product as built for modern marketing teams, including SaaS growth marketers, nonprofit campaign managers and agencies running client campaigns. |
| Automation | The REST API and MCP server support sending, tracking, address verification, and creative generation. | Triggered campaigns can send postcards and letters when triggered by a connected automation tool. |
| Design | Its browser-based HTML and CSS editor supports personalized designs, reusable templates, and print proofs. | The Direct Mail Editor lets users design, proof and organize templates for personalized mail campaigns. |
| Integrations | The integrations page describes Planning Center as available and lists several others, including Shopify, Zapier, Make, and n8n, as coming soon. | Named integrations include HubSpot, Salesforce, HighLevel, Zapier, ActiveCampaign, Zoho, Keap, Klaviyo, Marketo and Canva. |
| Support | The security page says MailStream will share SOC 2 reports, complete security questionnaires, and arrange calls with its security team. | The Free Plan lists email, chat and user guide support; the Marketer Plan lists enhanced support response and the Pro & Agency Plans list priority support response. |
| Tracking | Mail pieces use USPS Intelligent Mail barcodes, with status available through the dashboard, API, or webhooks. | Campaign dashboards report USPS delivery events and online responses, including delivered, forwarded and returned mail. |
| What it does | MailStream provides a self-serve platform, REST API, and MCP server for sending physical postcards and letters. | Postalytics automates creation, sending, personalization and measurement of direct-mail postcards and letters. |
Plans
Postalytics
- Free PlanFree
- Free PlanFree
- Marketer Plan$199 a month
- Pro & Agency Plans$399 a month
In their own words
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.
Postalytics
Postalytics automates direct mail campaigns, from creating personalized mail to sending it and tracking delivery and responses. Its Direct Mail Editor lets teams design, proof, and organize templates for postcards and letters. Campaign dashboards use Intelligent Mail Barcode tracking for delivery, while personalized URLs and QR codes provide response tracking. Connected automation tools can trigger postcards or letters, and lists can be imported through integrations or file upload. Postalytics says it checks addresses against USPS databases. Its integrations include HubSpot, Salesforce, HighLevel, ActiveCampaign, Klaviyo, Canva, Figma, Zapier, Marketo, Zoho CRM, and Keap; API and webhook options are also available. Supported formats include several postcard sizes, bifold self-mailers, and letters. The service says customers can mail one piece or 100,000 without a minimum order. Plans include printing, addressing, postage, and mailing services, with USPS First Class and Standard Class options. The free plan has one user login and charges mail per piece. Paid plans start at $199 per month, with mail also charged per piece. Postalytics is available on the web and through an API.