email & pgp: added fairmail and linked pgp and email entries

wiki/email.md

@@ -0,0 +1,29 @@
+# Email
+
+Email is a method of exchanging electronic messages.
+
+## Setup
+
+Email usually consists of a [server](#server) and a [client](#client).
+
+## Server
+
+If you want to host your own mail-server there are solutions with and without
+interfaces.
+
+- [Dovecot](./docker/tvial_-_docker-mailserver.md) is a simple dockerized
+  mail server that has no interface.
+
+## Client
+
+If you don't have a built-in web interface for your mail-server you need some
+software to access your mails.
+And even if you have it can be useful to keep your mails synced locally on your pc.
+
+- [Neomutt](linux/neomutt.md) is a [terminal-based](/wiki/linux/system_console.md)
+  mail client for linux, that has a simple interface.
+- [Thunderbird](/wiki/thunderbird.md) is a free and open-source mail client which is
+  cross-platform.
+  It also features, contact, todo and calendar management.
+- [FairEmail](/wiki/android/fairemail.md) is a free and open-source mail client for
+  [Android](/wiki/android.md).