iPhone not sending emails

I’m having trouble sending emails from my iPhone 12. Receiving is fine. It keeps saying things like ‘invalid sender address’. I’ve checked absolutely everything I can think of. I’ve had endless contact with my domain host (123Reg). Works ok on my iPad! 123Reg insists that it’s not a problem at their end. I’ve meticulously entered all the settings into the stmp area. Please help me, I’m going mad! 🙂

Posted on Dec 8, 2023 12:28 AM

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2 replies

Dec 8, 2023 12:47 AM in response to TonyYorkshire

If you can't send an email on your iPhone, iPad or iPod touch

  1. When you make an iOS or iPadOS backup in iCloud or iTunes, it backs up your mail settings, but not your email. ... 
  2. Make sure your device is connected to the Internet.
  3. Check with your email service provider to find out if there's a service outage.

More items...


If you can't send an email on your iPhone, iPad or iPod touch ...



Which email account are you referring to? Google, iCloud, AOL, Exchange, Outlook, Yahoo or any Other (Refer to the pic )below




  1. Is this your corporate iPhone? Then please contact the system administrator of your corporate
  2. If it is your personal device, in that case, do you have any profile installed by your corporate/organisation/enterprise/School Management?
    1. Erase the profile added by you If you have installed a profile on your own --> Install or remove configuration profiles on iPhone - Apple ...
    2. Or please contact the system administrator of the organisation who provided the profile to you




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iPhone not sending emails

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