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mail says sender address is invalid

Anybody else experiencing problems in iPad os 13.1 using email....sending mail to my family using addresses that I have used for years just gets me a message that the email address is invalid....very frustrating.

iPad Pro 9.7-inch WiFi, Cellular

Posted on Sep 27, 2019 7:34 AM

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Posted on Oct 24, 2019 10:45 PM

This worked for me:


Settings > Passwords and Accounts > Click on your email > Click on your email again at the top > Outgoing Mail Server > Click Primary Server which is at the top.

Now make sure the info on this screen is filled out. Username/password/use SSL/Authentication should be password/check that the Port # is correct. (You may need to check with your ISP for the number.)

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Oct 24, 2019 10:45 PM in response to Wyomike

This worked for me:


Settings > Passwords and Accounts > Click on your email > Click on your email again at the top > Outgoing Mail Server > Click Primary Server which is at the top.

Now make sure the info on this screen is filled out. Username/password/use SSL/Authentication should be password/check that the Port # is correct. (You may need to check with your ISP for the number.)

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Sep 28, 2019 4:03 AM in response to Wyomike

I’ve got the same problem both with iOS 13 and previously with iOS 12 . I get round it by switching from my WiFi to tethering to my iPhone for a few minutes on 4g and the mail goes immediately. Might be a clue to the problem for someone more technically competent ?.

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Oct 25, 2019 5:26 AM in response to MartiRK

Thanks for taking the time to consider and respond to my problem....the problem started after downloading iPad os 13....it is an intermittent problem...I have done as you suggested with no change...again, thanks for your thoughts.

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Nov 19, 2019 6:56 AM in response to Wyomike

ipad mini is saying the same thing, and has been for approximately 2 weeks...even before the update that I installed last night hoping it would fix the issue. I’m able to receive email, but not able to receive anything.Veryfrustrationg as I no longer have an iphone...have to admit, you’re losing me apple, one piece at a time!

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Oct 18, 2019 3:55 AM in response to eris23

And now when I go to Trash emails after selecting All some of them mysteriously uncheck themselves and I have to repeat the process....don’t even get me started about websites that are not sized properly or websites that load and then completely disappear and saved passwords not being available when I go to log in to a particular website....what a huge mess.....

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Dec 27, 2019 1:37 PM in response to Wyomike

I was getting the sender email invalid as well after updating to the 11. I deleted my mail account and re-added it. On the outgoing server, where it says user name and password optional, it isn't. Once I added it my mail would go through. My husband had the same problem, but he had the user name and password filled in. I told him to re-enter his password. The phone reverified, now he can send email.


Hope this works for others!!!

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Jan 6, 2020 11:10 AM in response to Wyomike

I started having this issue after the latest upgrade. The only way I could resolve it was by deleting my POP accounts and re-entering them as IMAP accounts. You may have to change the name/description of the account, otherwise it might be detected as a duplicate account and it won't be saved.

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Jan 6, 2020 11:15 AM in response to Julian Solomons

Thanks Julian, I actually did just that with no success....the interesting thing is is that it doesn’t do it every time....and now my inbox emails transfer themselves to my Trash.....and the keyboard still covers 3/4 of the page landscape mode....it’s a mess...not what you used to get from Apple.

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Feb 7, 2020 3:10 AM in response to milena145

The email program has just disintegrated into a complete mess......after composing an email and hitting send it goes straight to the trash.....I will be composing an email and all of a sudden everything is reversed.....all the letters and words are backwards and the cursor is at the front of the email.....it is just a big joke to Apple I guess as they don’t seem to want to address the problems.

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mail says sender address is invalid

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