kurrier-org / kurrier

Kurrier is a modern, self-hosted workspace for email, calendar, contacts and storage.

dahlia / upyo

Upyo is a simple and cross-runtime library for sending email messages using SMTP and various email providers. It works on Node.js, Deno, Bun, and edge functions.

mailgun / mailgun.js

Javascript SDK for Mailgun

MillionSend / millionsend

The open-source email platform — self-host on your own AWS SES, or use the cloud. Resend-compatible API.