Description-----------| Q                | A| -----------------| ---| Fixed issues     |Fixes#2164| Docs PR or issue | -This PR adds support for the `native://default` mailer transport, which uses the PHP `sendmail_path` configuration. Some notes:* This feature is available in Symfony `5.2.0` and up. Since the `symfony/mailer` dependency is independent from other Symfony packages, it can be allowed to be installed, while everything else stays at Symfony `4.4.*`.* Since the actual transport factory for the native transport is however defined by the `symfony/framework-bundle`, an additional compiler pass is necessary, to add said transport factory to the container, if supported and not already present. This can be removed once the core requires at least Symfony `5.2.*`.* Changing the `symfony/mailer` dependency to include `5.2.*` also allows you to use [additional options](symfony/symfony#37432) for your transport (like a local domain for an SMTP relay or a custom sendmail command).It would be important to include this in the upcoming Contao 4.11 version, as otherwise there exists no possibility of using a custom sendmail command and thus you are stuck with the hardcoded one.Commits-------5ea20a7 support native transport53836ae use class_exists3bbd552 update ContaoCoreBundleTestb084330 check for native mailer support in PluginTest too4df690a update AddNativeTransportFactoryPassTest for prefer-lowest72e72d2 Apply suggestions from code reviewCo-authored-by: Leo Feyer <github@contao.org>ad36b75 merge with mastere98b617 removed superfluous function1969b8e fix merge error9fbdaf8 CS49187f0 Merge branch 'master' into use-native-mailer

Description-----------| Q                | A| -----------------| ---| Fixed issues     | Fixes #2164| Docs PR or issue | -This PR adds support for the `native://default` mailer transport, which uses the PHP `sendmail_path` configuration. Some notes:* This feature is available in Symfony `5.2.0` and up. Since the `symfony/mailer` dependency is independent from other Symfony packages, it can be allowed to be installed, while everything else stays at Symfony `4.4.*`.* Since the actual transport factory for the native transport is however defined by the `symfony/framework-bundle`, an additional compiler pass is necessary, to add said transport factory to the container, if supported and not already present. This can be removed once the core requires at least Symfony `5.2.*`.* Changing the `symfony/mailer` dependency to include `5.2.*` also allows you to use [additional options](symfony/symfony#37432) for your transport (like a local domain for an SMTP relay or a custom sendmail command).It would be important to include this in the upcoming Contao 4.11 version, as otherwise there exists no possibility of using a custom sendmail command and thus you are stuck with the hardcoded one.Commits-------5ea20a71 support native transport53836ae6 use class_exists3bbd552f update ContaoCoreBundleTestb084330c check for native mailer support in PluginTest too4df690a8 update AddNativeTransportFactoryPassTest for prefer-lowest72e72d27 Apply suggestions from code reviewCo-authored-by: Leo Feyer <github@contao.org>ad36b75c merge with mastere98b617f removed superfluous function1969b8e1 fix merge error9fbdaf8e CS49187f05 Merge branch 'master' into use-native-mailer

Description-----------| Q                | A| -----------------| ---| Fixed issues     | Fixes #2164| Docs PR or issue | -This PR adds support for the `native://default` mailer transport, which uses the PHP `sendmail_path` configuration. Some notes:* This feature is available in Symfony `5.2.0` and up. Since the `symfony/mailer` dependency is independent from other Symfony packages, it can be allowed to be installed, while everything else stays at Symfony `4.4.*`.* Since the actual transport factory for the native transport is however defined by the `symfony/framework-bundle`, an additional compiler pass is necessary, to add said transport factory to the container, if supported and not already present. This can be removed once the core requires at least Symfony `5.2.*`.* Changing the `symfony/mailer` dependency to include `5.2.*` also allows you to use [additional options](symfony/symfony#37432) for your transport (like a local domain for an SMTP relay or a custom sendmail command).It would be important to include this in the upcoming Contao 4.11 version, as otherwise there exists no possibility of using a custom sendmail command and thus you are stuck with the hardcoded one.Commits-------5ea20a71 support native transport53836ae6 use class_exists3bbd552f update ContaoCoreBundleTestb084330c check for native mailer support in PluginTest too4df690a8 update AddNativeTransportFactoryPassTest for prefer-lowest72e72d27 Apply suggestions from code reviewCo-authored-by: Leo Feyer <github@contao.org>ad36b75c merge with mastere98b617f removed superfluous function1969b8e1 fix merge error9fbdaf8e CS49187f05 Merge branch 'master' into use-native-mailer

…ao#2554)Description-----------| Q                | A| -----------------| ---| Fixed issues     |Fixescontao#2164| Docs PR or issue | -This PR adds support for the `native://default` mailer transport, which uses the PHP `sendmail_path` configuration. Some notes:* This feature is available in Symfony `5.2.0` and up. Since the `symfony/mailer` dependency is independent from other Symfony packages, it can be allowed to be installed, while everything else stays at Symfony `4.4.*`.* Since the actual transport factory for the native transport is however defined by the `symfony/framework-bundle`, an additional compiler pass is necessary, to add said transport factory to the container, if supported and not already present. This can be removed once the core requires at least Symfony `5.2.*`.* Changing the `symfony/mailer` dependency to include `5.2.*` also allows you to use [additional options](symfony/symfony#37432) for your transport (like a local domain for an SMTP relay or a custom sendmail command).It would be important to include this in the upcoming Contao 4.11 version, as otherwise there exists no possibility of using a custom sendmail command and thus you are stuck with the hardcoded one.Commits-------5ea20a7 support native transport53836ae use class_exists3bbd552 update ContaoCoreBundleTestb084330 check for native mailer support in PluginTest too4df690a update AddNativeTransportFactoryPassTest for prefer-lowest72e72d2 Apply suggestions from code reviewCo-authored-by: Leo Feyer <github@contao.org>ad36b75 merge with mastere98b617 removed superfluous function1969b8e fix merge error9fbdaf8 CS49187f0 Merge branch 'master' into use-native-mailer

This PR was squashed before being merged into the 5.2 branch.Discussion----------[Mailer] Document new Mailer transport optionsThis documents the additional options for the Mailer component introduced insymfony/symfony#37432Commits-------f713212 [Mailer] Document new Mailer transport options