Hello
Am 2018-03-05 hackte Виталий
Воронов in die Tasten:
Yes, I think either their client or one of the server hops along the
way mangled the content. In theory UTF-8 in headers and body is
standardized (each separately), but that says little about compliance.
For all I know their server predates the standards extension.
Link for those who care:
https://en.wikipedia.org/wiki/Unicode_and_Email
I would say: I go crazy with Stretch...
Since my upgrade, many things are not more working as expected.