tmail-flutter VS smtp-server

The only JMAP webmail client I am aware of is TMail.

Just because I saw it in the link above (dont think its on the App Store):

https://github.com/linagora/tmail-flutter

On mobile I am using Ltt.rs and as a web client Tmail. However from those two only Ltt.rs works properly, Tmail is not fully JMAP compliant and it is not yet possible send emails with it.

PEM issues for the TLS certificate or DKIM signature? In any case feel free to describe the problem in the discussions page and I'll check it out.

I am happy to announce Stalwart SMTP, a modern SMTP server developed in Rust with a focus on security, speed, and extensive configurability. It features built-in DMARC, DKIM, SPF and ARC support for message authentication, strong transport security through DANE, MTA-STS and SMTP TLS reporting, and offers great flexibility and customization thanks to its dynamic configuration rules and native support for Sieve scripts. The project has been recently awarded a grant from NLNet and the European Commission's Next Generation Internet program to develop a mail server in Rust. The next step in the roadmap is to refactor the code base of the previously released Stalwart JMAP/IMAP servers and to create an integrated mail server solution that is simple to install and manage. Any comments or suggestions are more than welcome!