@tcecyk Thanks for the quick response.
I agree with you there, I would think this syncing option should be something offered in setup to the end user. If not, somehow make new users aware of this from the start. Had you not mentioned this, I would not know this was an option. But admittedly, I don’t like the idea of having contacts in two places when it should simply be one.
Which service are you comparing Snappymail to; Nextcloud mail or Rainloop?
If Nextcloud mail uses Mail-in-a-Box or iRedmail, they both seem to have that covered…
Each Mail-in-a-Box provides webmail and an IMAP/SMTP server for use with mobile devices and desktop mail software. It also includes contacts and calendar synchronization.
As for the documentation you sent, thanks for that. It helps give a bit more insight.