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README.md

@@ -323,10 +323,10 @@ _Simple deployment of a mail server, e.g. for inexperienced or impatient admins.
 - [Mail-in-a-Box](https://mailinabox.email/) - Turns any Ubuntu server into a fully functional mail server with one command. ([Source Code](https://github.com/mail-in-a-box/mailinabox)) `CC0-1.0` `Shell`
 - [Modoboa](http://modoboa.org/en/) - Modoboa is a mail hosting and management platform including a modern and simplified Web User Interface. ([Source Code](https://github.com/tonioo/modoboa)) `MIT` `Python`
 - [Qmailtoaster](http://www.qmailtoaster.com/) - Stable, full-featured, easy-to-install mail server based on qmail. ([Source Code](https://github.com/QMailToaster/)) `Multiple` `Linux`
-- [Simple NixOS Mailserver](https://gitlab.com/simple-nixos-mailserver/nixos-mailserver) - Complete mailserver solution leveraging the Nix Ecosystem. `GPL-3.0` `Nix`
-- [wildduck](https://wildduck.email/) - Scalable no-SPOF IMAP/POP3 mail server. ([Source Code](https://github.com/nodemailer/wildduck)) `EUPL-1.2` `Node.js`
 - [SimpleLogin](https://simplelogin.io) - Open source email alias solution to protect your email address. Comes with browser extensions and mobile apps. ([Source Code](https://github.com/simple-login/app)) `MIT` `Python`
 #### Mail Transfer Agents
+- [Simple NixOS Mailserver](https://gitlab.com/simple-nixos-mailserver/nixos-mailserver) - Complete mailserver solution leveraging the Nix Ecosystem. `GPL-3.0` `Nix`
+- [wildduck](https://wildduck.email/) - Scalable no-SPOF IMAP/POP3 mail server. ([Source Code](https://github.com/nodemailer/wildduck)) `EUPL-1.2` `Node.js`
 
 _MTAs / SMTP servers_