Fork of LetterIt by Helge Orthmann (http://www.letterit.de/) Rewrite for PHP8 / PDO
16.11.18: Initial commit
17.01.16: Update to release
17.07.07: Bugfixes
17.09.08: Bugfixes
17.09.26: Bugfixes
18.02.27: Bugfixes, New Tab-Layout (Subscriber), external Languagefile (not all translated)
18.06.06: Bugfixes, Changed database structure
19.03.20: Added View/Click Statistics
24.10.14: Updated from mysqli to PDO + Bugfixes