How to uninstall or remove dovecot-imapd software package from Ubuntu 16.10 (Yakkety Yak)

You can uninstall or removes an installed dovecot-imapd package itself from Ubuntu 16.10 (Yakkety Yak) through the terminal,

$ sudo apt-get remove dovecot-imapd

Uninstall dovecot-imapd including dependent package

If you would like to remove dovecot-imapd and it's dependent packages which are no longer needed from Ubuntu,

$ sudo apt-get remove --auto-remove dovecot-imapd

Use Purging dovecot-imapd

If you use with purge options to dovecot-imapd package all the configuration and dependent packages will be removed.

$ sudo apt-get purge dovecot-imapd

If you use purge options along with auto remove, will be removed everything regarding the package, It's really useful when you want to reinstall again.

$ sudo apt-get purge --auto-remove dovecot-imapd