Bugfix: prevent a PHP warning

Luxletter is now the default newsletter-extension.

Direct unsubscription for the mail-extension

New action: direct unsubscribe via Mail-link and new setting: authCodeFields.

More support for the mail extension

fe_users can now be used with the extension luxletter or mail.
deleteMode 3 added: delete only categories (Mail) or user-group (Luxletter).
New setting: newsletterExtension (mail or luxletter).

Compatibility to TYPO3 11.5 added again

Bugfix: language added to the links in the email.

Support for direct_mail removed

Breaking: support for direct_mail removed. Instead, support for the extension "mail" added.
Breaking: TypoScript settings dmUnsubscribeMode, module_sys_dmail_html, module_sys_dmail_category renamed to unsubscribeMode, html, categoryOrGroup.
See chapter Administrator / Updating to version 6.x in the documentation.

Automatically set the correct PluginName in templates

In version 5.0 and 5.1 you needed to adapt the templates.
Now this often not necessary anymore.

Bugfix for PHP 8

v5.1.3

Prevent warning

Custom validator added

And bugfix for TYPO3 12.

Custom validator added

v4.2.0

Version 4.2.0

Release for TYPO3 12

some bugfixes