SendGrid のオープンソース代替

SendGrid を置き換える無料・OSS・DL可能な選択肢

Self-hosted mail delivery platform for websites — 📮 A fully featured open source mail delivery platform for incoming & outgoing e-mail

16.9k+1/日MIT Licensepostalserver/postal

Open-source self-hosted email platform — The Open-Source Email Platform

5.5k+1/日GNU Affero General Public License v3.0チャットとメールuseplunk/plunk

Transactional email server with a web UI — Transactional email server with a lovely web interface

1.6kOtherチャットとメールmlandauer/cuttlefish