About OpenMail
Email API for AI agents with inbox creation and webhook integration
OpenMail vs Sendmux (2026)
A side-by-side comparison of OpenMail and Sendmux, two email AI agents. Compare pricing, access model, and key features to decide which fits your workflow.
Category
Email
Email
Industry
Horizontal
Horizontal
Pricing
Freemium
Freemium
Access
API
Closed Source
Upvotes
6
1
Views
126
5
About Sendmux
Email inbox API for AI agents. Create agent mailboxes, receive live inbox events.
Key features compared
Create dedicated email inboxes via API or CLI
Send emails programmatically
Receive replies in real time via webhooks or WebSocket
Parse attachments into LLM-ready text
API-first design for integration with AI agents
Email Inbox API for AI Agents
Dedicated Agent Mailboxes
Mailbox History for Agent Memory
Multi-Provider Email Sending
Managed Amazon SES Sending
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