I used to send e-mails from a Yahoo e-mail account (***@yahoo.de) to my Trello Inbox using the alias e-mail-address provided by Trello (mytrellonickname+***@app.trello.com). (My Trello account is associated to a different e-mail account, not the Yahoo account, that's why I can't simply use the "inbox@app.trello.com").
It has worked a few times, but recently Yahoo's in-browser e-mail app no longer accepts the Trello alias address. Yahoo says I should use a correct email address.
Did anyone experience the same issue and knows a solution to it?