Which email is it? Gmail / iCloud / TWC / Spectrum / Other?
On or off Wi-Fi / Mobile data?
What errors do you get when you try to send email and what email app are you using?
Same here. TWC email. Cannot send email on iPhone or iPad. Message says ‘Cannot connect to outgoing email server for “SMTP:XXXXX@firstname.lastname@example.org” ‘
this was working yesterday & suddenly stopped.