On 11/22/20 6:59 AM, David B?rgin wrote:
> Hello!
>
> I?m interested in exploring alternative IMAP servers that have good
> support for internationalised email, such as support for SMTPUTF8, IDN
> mail domains, Unicode local-part, etc. etc.
>
> If you used to use Dovecot, and found an alternative that does such
> things well, I would very much like to hear it.
"good support" is a rather fuzzy qualifier. in general, it's
sketchy. here's a comparison list / sort on "IDN/UTF8",
https://en.wikipedia.org/wiki/Comparison_of_mail_servers
Many of those^ are 'integrated mail servers' -- whether their IMAP
backends can be split off and do/don't support I18N, dunno.
What dovecot does/doesn't have planned, I dunno either; no bug tracker to
peruse, and digging through this list is not really helpful.
I've not yet seen a stmt of support for
https://www.ietf.org/rfc/rfc6855.txt
mail I18N's not a frequent need in my world (OTOH, for content search, it
is); where I _do_ have the stringent requirement, for just a couple of very
large installs, CommunigatePro runs.
Runs well, but comes with significant costs.
You might also take a look at Jakarta Mail (formerly JavaMail)
Its IMAP
https://eclipse-ee4j.github.io/mail/docs/api/com/sun/mail/imap/package-summary.html
claims support for rfc6855.