
Email and SMS API for developers and AI agents. REST, 9 SDKs, SMTP and an MCP server. Unlimited contacts, priced by sends. Free for 5,000 emails a month.

Verified summary and editor assessment
Unitpost is an email and SMS platform for developers and the AI agents they build. Send transactional email, campaigns and SMS over a REST API, nine SDKs, SMTP or an MCP server. Cursor, Claude Code and other MCP clients connect with OAuth and get the same actions as the dashboard. Unit, the built-in assistant, builds templates and campaigns and asks before anything sends. SMS reaches 177 countries. One flat monthly price is your sending balance. The free plan includes 5,000 emails a month.
Unitpost stands out in the email-assistant ecosystem for its balance of capability and accessible design. With an AIToolboard Score of 87/100, we recommend Unitpost for individuals and teams seeking efficient AI acceleration with low onboarding friction.
Compare Unitpost against leading competitors in email-assistant
| Tool | Category | Pricing | Compare | Action |
|---|---|---|---|---|
S SaaS Emailer SaaS Emailer is a simple email marketing tool for SaaS companies: create campaigns, target an audience for each, schedule sends, send through an API and track results. | email-assistant | paid | Unitpost vs SaaS Emailer → | Review |
F Freetempmail Free temporary email in one click. No signup, no ads. | email-assistant | free | Unitpost vs Freetempmail → | Review |
E Email Spam Tester AI reads your whole email, headers to links, against the RFCs: 42 checks (SPF, DKIM, DMARC, blocklists, content), a fix plan, plus the folder it hit at Gmail, Outlook, Yahoo. | email-assistant | free | Unitpost vs Email Spam Tester → | Review |
A AI Rap Generate original rap lyrics, verses, hooks and freestyles with AI. | email-assistant | free | Unitpost vs AI Rap → | Review |
D Docklark Organize team workspaces and docking workflows for remote and hybrid teams. | email-assistant | free | Unitpost vs Docklark → | Review |
H Harry AI Dev AI coding assistant that helps developers write, review, and ship code faster. | email-assistant | free | Unitpost vs Harry AI Dev → | Review |
Unitpost is a leading AI tool in the email-assistant category designed to email and sms api for developers and ai agents. rest, 9 sdks, smtp and an mcp server. unlimited contacts, priced by sends. free for 5,000 emails a month..
Unitpost operates on a freemium pricing model. Check the official website for real-time tier options and enterprise volume discounts.
The best alternatives to Unitpost include SaaS Emailer, Freetempmail, Email Spam Tester. Each offers distinct features for email-assistant workflows.
Yes, Unitpost holds an AIToolboard Enterprise Readiness score of 88/100, making it well-suited for individual creators, fast-growing startups, and corporate teams.
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