12.4 Contact functions ¶

It can sometimes be useful to discard or rewrite the contact information that mu4e provides, for example to fix spelling errors, or omit unwanted contacts.

To handle this, mu4e provides mu4e-contact-process-function, which, if defined, is applied to each contact. If the result is nil, the contact is discarded, otherwise the (modified or not) contact information is used.

Each contact is a full e-mail address as you would see in a contact-field of an e-mail message, e.g.,

"Foo Bar" <foo.bar@example.com>

or

cuux@example.com

An example mu4e-contact-process-function might look like:

(defun my-contact-processor (contact)
  (cond
    ;; remove unwanted
    ((string-match-p "evilspammer@example.com" contact) nil)
    ((string-match-p "noreply" contact) nil)
    ;;
    ;; jonh smiht --> John Smith
    ((string-match "jonh smiht" contact)
       (replace-regexp-in-string "jonh smiht" "John Smith" contact))
    (t contact)))

(setq mu4e-contact-process-function 'my-contact-processor)