citadel.org
GitHub - postalserver/postal: ✉️ A fully featured open source mail delivery platform for incoming & outgoing e-mail
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![12 Best Self-Hosted Email Server Platforms to Use [2022]](https://geekflare.com/wp-content/uploads/2022/05/iRedMail-self-hosted-mail-server.jpeg "12 Best Self-Hosted Email Server Platforms to Use [2022]")
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Poste.io ~ complete mail server
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