Supporting the JMAP protocol (https://jmap.io/) would be great. It aims at replacing IMAP and is much more efficient. FastMail is already using it.
I am using this so long time i put survey on this https://dqfansurvey.space
fmwa apk commented
i personallly support JMAP, i know about its features,
I didn't came across the JMAP protocaol,i dont know how it works.https://dqfansurvey.site/