I recently switched my email provider, too. I ended in having to choose between Posteo and Mailbox.org - since I have a few own domains the choice was easy.
@rommudoh Yes, that is really unfortunate about Posteo... They say it is because if you link your own domain, you won't be pseudonymous to them anymore, which would somehow defeat their unique selling proposition... But still, even if you don't care about pseudonymity that much, they would still just be a very good email provider. :)
On the other hand, Mailbox.org is really awesome as well, and for my own domains I also use them, so it's a bit like choosing between heaven and paradise. ;)
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