On Tue, Dec 27, 2022, Puru Shartha wrote: > Based on my current understanding, only Postfix+Courier seems to support > users with UTF8 requirements.
sendmail has it too:
8.17.1/8.17.1 2021/08/17
Experimental support for SMTPUTF8 (EAI, see RFC 6530-6533)
is available when using the compile time option USE_EAI
