HalfYearProcessMailer
Trello Card: https://trello.com/c/PCrv6i9p/162-halfyearprocessmailer
Für https://trello.com/c/q9nXYKW6/159-refactoring-halfyear-feedback braucht es einen neuen Mailer
Trello Card: https://trello.com/c/PCrv6i9p/162-halfyearprocessmailer
Für https://trello.com/c/q9nXYKW6/159-refactoring-halfyear-feedback braucht es einen neuen Mailer