Self-hosted transactional email · EverJust
Product email that costs nothing per domain.
useSend runs on your own AWS account over Amazon SES — one deployment, one tenant per product, unlimited sending domains, billed only per email. These docs cover onboarding a product, the full REST API, webhooks, SMTP, migrating from Resend, and the MCP server for AI agents.
Quickstart
Send your first email in five minutes.
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Onboard a product
Add a tenant, verify a domain, mint a key.
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API reference
Every endpoint, field, and response.
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Migrate from Resend
Swap the SDK, keep your templates.
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MCP server
Let AI agents send mail via MCP.
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Architecture
How it runs on AWS SES.
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