AcyMailing Enterprise is a reliable Newsletter and email marketing extension for Joomla.
Demo: https://www.acymailing.com
Mailing system to organize marketing campaigns and sending newsletters. Program tested using 750.000 emails databse (min. req. PHP 7.x).
Demo: https://codecanyon.net/item/emailer-newsletter-mailing-system-with-analytics-geo-location/15345207
Easy Installation Multi-User System Multi Language (23 Language Inc.) and Language Editor Bootstrap 5 Supported & Responsive User Specific Theme Selection (16 Theme Inc.) WYSIWYG Editor & Drag / Drop Design API Support.
Demo: https://codecanyon.net/item/lethe-php-newsletter-mailing-system/7663734