15 string references to 'system.mail'

ContactPersonalTest::testSendPersonalContactMessage in core/modules/contact/tests/src/Functional/ContactPersonalTest.php
Tests that mails for contact messages are correctly sent.
InstallerConfigDirectoryTestBase::testConfigSync in core/tests/Drupal/FunctionalTests/Installer/InstallerConfigDirectoryTestBase.php
Confirms that the installation installed the configuration correctly.
InstallerExistingConfigSyncDirectoryMultilingualTest::testConfigSync in core/tests/Drupal/FunctionalTests/Installer/InstallerExistingConfigSyncDirectoryMultilingualTest.php
Confirms that the installation installed the configuration correctly.
InstallerExistingConfigTestBase::testConfigSync in core/tests/Drupal/FunctionalTests/Installer/InstallerExistingConfigTestBase.php
Confirms that the installation installed the configuration correctly.
MailDsnSettingsUpdateTest::testSystemPostUpdateMailerDsnSettings in core/modules/system/tests/src/Functional/Update/MailDsnSettingsUpdateTest.php
Tests system_post_update_mailer_dsn_settings().
MailerDsnConfigValidationTest::testMailerHostValidation in core/tests/Drupal/KernelTests/Core/Config/MailerDsnConfigValidationTest.php
MailerDsnConfigValidationTest::testMailerPortValidation in core/tests/Drupal/KernelTests/Core/Config/MailerDsnConfigValidationTest.php
MailerDsnConfigValidationTest::testMailerSchemeValidation in core/tests/Drupal/KernelTests/Core/Config/MailerDsnConfigValidationTest.php
MailerDsnConfigValidationTest::testMailerTransportDefaultOptionsValidation in core/tests/Drupal/KernelTests/Core/Config/MailerDsnConfigValidationTest.php
MailerDsnConfigValidationTest::testMailerTransportNativeOptionsValidation in core/tests/Drupal/KernelTests/Core/Config/MailerDsnConfigValidationTest.php
MailerDsnConfigValidationTest::testMailerTransportNullOptionsValidation in core/tests/Drupal/KernelTests/Core/Config/MailerDsnConfigValidationTest.php
MailerDsnConfigValidationTest::testMailerTransportSendmailOptionsValidation in core/tests/Drupal/KernelTests/Core/Config/MailerDsnConfigValidationTest.php
MailerDsnConfigValidationTest::testMailerTransportSMTPOptionsValidation in core/tests/Drupal/KernelTests/Core/Config/MailerDsnConfigValidationTest.php
MailerDsnConfigValidationTest::testMailerUserPasswordValidation in core/tests/Drupal/KernelTests/Core/Config/MailerDsnConfigValidationTest.php
MigrateSystemConfigurationTest::testConfigurationMigration in core/modules/system/tests/src/Kernel/Migrate/d7/MigrateSystemConfigurationTest.php
Tests that all expected configuration gets migrated.

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