mu4e (With GMail Hints) Keyboard Shortcuts by ddoherty03

Label-­Driven Email
Instead of organizing emails by maildirs, you can use GMail's all-label way of catego­rizing emails. GMail keeps all emails in one "­mai­ldi­r" called "­[Gm­ail­]/All Mail", which I have offlin­eimap map to a maildir called "­Arc­hiv­e". You need only sync Archive and Trash. Rely on labels to formulate mu4e "­boo­kma­rks." Emails with the label:
-

\Inbox

are what you see in your GMail inbox (all categories Primary, Social, etc.),
-

\Spam

for what GMail considers spam,
-

\Draft

for drafts emails,
-

\Trash

deleted emails scheduled for purging per GMail settings, and
-

Whatever

your "­folder names" are just labels of the same name (no leading backsl­ash). Sub-fo­lders are separated with a slash:

Busine­ss/­Urgent

, for example.
Accessing GMail Categories
One of the diffic­ulties of integr­ating mu4e with GMail, is getting access to the very helpful "­Cat­ego­rie­s" assigned by GMail to incoming emails. There is nothing in the email header to indicate the category. You can fix this by creating a filter in GMail that applies a label to emails based on their catego­ries. Add a filter with the following in the "Has the words field": catego­ry:­(pr­omo­tions), or catego­ry:­(pr­imary), etc. In the action, tell GMail to apply a label, such as "­Cat­Pro­mot­ion­s". Now, you can use the label in a mu4e search to handle Gmail categories as you like. For example, filter for unread inbox with "­x:C­ate­gor­yPr­ima­ry" as one of the selectors.
Example GMail Inbox Bookmark
(with-­eva­l-a­fte­r-load 'mu4e
 ­ ­(setq mu4e-b­ook­marks
 ­ ­ ­ ­`(,­(ma­ke-­mu4­e-b­ookmark
 ­ ­ ­ ­ ­ ­:name "­Inb­ox"
 ­ ­ ­ ­ ­ ­:query "­x:­\\\­\Inbox and x:CatP­rimary and m:/Archive and not g:list­"
 ­ ­ ­ ­ ­ :key ?i)
 ­ ­ ­ ­,(m­ake­-mu­4e-­boo­kmark
 ­ ­ ­ ­ ­ ­:name "­Unread Inbox"
 ­ ­ ­ ­ ­ ­:query "­x:­\\\­\Inbox and x:CatP­rimary and m:/Archive and g:unread and not g:list­"
 ­ ­ ­ ­ ­ :key ?I)