6 functions implement hook_mail()

Note: the procedural functions in this list are found by pattern matching, so the list may include some functions that are not actually implementations of this hook.

ContactHooks::mail in core/modules/contact/src/Hook/ContactHooks.php

Implements hook_mail().

MailHtmlTestHooks::mail in core/modules/system/tests/modules/mail_html_test/src/Hook/MailHtmlTestHooks.php

Implements hook_mail().

SystemHooks::mail in core/modules/system/src/Hook/SystemHooks.php

Implements hook_mail().

UpdateHooks::mail in core/modules/update/src/Hook/UpdateHooks.php

Implements hook_mail().

UserHooks::mail in core/modules/user/src/Hook/UserHooks.php

Implements hook_mail().

user_load_by_mail in core/modules/user/user.module

Fetches a user object by email address.