To access Gmail via IMAP you must turn on IMAP in your Google account. See the Gmail Help for more information.
It is recommended to set up Gmail as an online account in GNOME. Please refer to the GNOME Desktop Help for more information. After doing so, the Gmail account will be listed in Evolution.
For configuring the account in Evolution, refer to the IMAP+ mail account settings. Note that not all options of such accounts can be edited in
As an alternative to setting up an online account in GNOME, allow access for less secure apps in your Gmail account settings.
For performance reasons it is recommended to