in the last few days, my iPhone does not update the emails. When I delete an email on my computer it still shows up on my iPhone as unread
Not helpful. Both devices are ALWAYS connected to the internet, yet when I delete e-mails using my iPhone, they remain as "unread" on my Mac24.
These don't sync between devices Contacts, Calendars, Bookmarks, Notes, Voice Memos, shared photos, iCloud Photos, and emails. Each device syncs to the email account server which may be Google, iCloud, AOL, Exchange, Outlook, Yahoo, or any Other. Please see the pic below
If one of the devices is not connected to the internet then it may seem to you that they are not syncing.
Me, too.
Same problem. Phone and computers don't sync with Mac Mail.
Apple mail email not syncing on iPhone
