iPhone native email app problems

Hi,

i have an iPhone xs MAX and i have a problem with forwarded emails from native email app, the other person see nothing in email body or attachments when emails are forwarded, i found nothing about this problem on the internet, but I realized that the phone is restarted , forwarded emails seems to be ok for some time , because after a few days/weeks the problem returns.

Any ideas about this problem/bug? I tried network settings reset but the problem persists.

thank you!