Unitpost

Email and SMS sending platform for developers, with API, SDKs, SMTP, and an MCP server for AI agents.

Unitpost is an email and SMS platform for sending transactional and marketing email and SMS. It provides a REST API, official SDKs (Node.js, Python, Ruby, PHP, Laravel, Go, Java, Rust, .NET), an SMTP relay, inbound email, webhooks, contacts, segments, templates, and automations. AI agents can drive it via an MCP server (mcp.unitpost.com/mcp), a built-in assistant (Unit), agent skills, and a CLI. Pricing is based on sending volume with unlimited contacts; a free tier includes 5,000 emails/month.

Category: Email & messaging
Pricing: freemium · from $0/mo (Free, 5k emails/mo); paid plans from $10/mo
Free tier: yes
API: yes
MCP server: yes
SDK: yes
Open source: no

#email #sms #transactional-email #marketing-email #smtp #mcp #ai-agents #automations

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Listed 2026-10-21 · last verified 2026-10-21 · extracted by @cf/zai-org/glm-5.3-flash · confidence 0.95

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API

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