12 string references to plugin.manager.mail in Drupal 10

AssertMailTraitTest::testAssertMailTrait in core/tests/Drupal/KernelTests/Core/Test/AssertMailTraitTest.php

Tests that the maintenance theme initializes the theme and its base themes.

EmailAction::create in core/lib/Drupal/Core/Action/Plugin/Action/EmailAction.php

MailCaptureTest::testMailSend in core/tests/Drupal/FunctionalTests/MailCaptureTest.php

Tests to see if the wrapper function is executed correctly.

MailTest::testCancelMessage in core/modules/system/tests/src/Kernel/Mail/MailTest.php

Tests that message sending may be canceled.

MailTest::testConvertRelativeUrlsIntoAbsolute in core/modules/system/tests/src/Kernel/Mail/MailTest.php

Checks that relative paths in mails are converted into absolute URLs.

MailTest::testErrorMessageDisplay in core/modules/system/tests/src/Kernel/Mail/MailTest.php

Assert that the pluggable mail system is functional.

MailTest::testFromAndReplyToHeader in core/modules/system/tests/src/Kernel/Mail/MailTest.php

Checks the From: and Reply-to: headers.

MailTest::testPluggableFramework in core/modules/system/tests/src/Kernel/Mail/MailTest.php

Assert that the pluggable mail system is functional.

MailTest::testRenderedElementsUseAbsolutePaths in core/modules/system/tests/src/Kernel/Mail/MailTest.php

Checks that mails built from render arrays contain absolute paths.

UserMailNotifyTest::testUserRecoveryMailLanguage in core/modules/user/tests/src/Kernel/UserMailNotifyTest.php

Tests recovery email content and token langcode is aligned.

_update_cron_notify in core/modules/update/update.fetch.inc

Performs any notifications that should be done once cron fetches new data.

_user_mail_notify in core/modules/user/user.module

Conditionally create and send a notification email when a certain operation happens on the given user account.