Add email-related notes

notebook/Linux/Tools/Dovecot.md

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+---
+tags: mail
+---
+# Dovecot
+[Dovecot](https://dovecot.org/) is a [[Mail Delivery Agent]] that supports both IMAP and POP3
+
+* Official [quick configuration](https://doc.dovecot.org/configuration_manual/quick_configuration/) guide.

notebook/Linux/Tools/Exim.md

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+---
+tags: mail
+---
+# Exim
+[Exim](https://www.exim.org) is a [[Mail Transfer Agent]] for unix-like operating systems.

notebook/Linux/Tools/Mailpile.md

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+---
+tags: mail
+---
+# Mailpile
+[Mailpile](https://www.mailpile.is) is a web-based email client

notebook/Mail/Mail Delivery Agent.md

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+---
+aliases: MDA
+---
+# Mail Delivery Agent
+- Last [[MTA]] to handle a message
+- Relays the message to the recipient user or stores it for the user to retreive

notebook/Mail/Mail Transfer Agent.md

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+---
+aliases: MTA
+---
+# Mail Transfer Agent
+- Accept mail from UA[^user agent] or from other MTAs
+- Relay mail to other MTAs or to MDA