Yahoo email not working in mail app with iOS 11

I followed the advice of one of the posters to enable Yahoo Account Key and download Yahoo Mail app. Even though they don't call it a Two-Step Verification, in fact, it is exactly that. Now to get a web access to Yahoo mail I have to type in a code sent by SMS or by a pop-up from Yahoo mail app. I have also enabled the Allow apps that use less secure sign in option.

After that, I deleted Yahoo mail on both my iPhone and iPad and re-created them using built-in Yahoo as a provider. Everything started working at first. Later I turned off the use of Yahoo Account Key so now I can log into Yahoo mail within a browser using my original password. Yahoo mail continued working on my iPhone and iPad but later I ran into problems on iPad.

Yahoo mail does not download on iPad! Today (Thursday) I checked my Inbox only to find out the latest emails shown date back to Monday. I don't know why Yahoo does not work on iPad the way it does on iPhone. Later today I managed to force Yahoo to download on iPad but it took a lot of effort. The bottom line is the above method does not reliably work on iPad.

It started working when I updated to iOS 11.1.1

Well the fix from last night has stopped working so I turned off the other SMTP server for outgoing and now it works like it did before.

The way I got it is I made the yahoo server the only one on. I have my Aol on there too but turned the server off.

Also, see the outage map from Yahoo: http://downdetector.com/status/yahoo-mail/map/

I install the Yahoo Mail app and the mail app return to work. Maybe is some autorization or something like that.

FWIW, I use Outlook on my iPhone for Gmail, Yahoo, and my work Exchange account. No problems at all with Yahoo so maybe try a different mail client.

Getting same here. Has only just started happening today actually. I can receive mail to my Yahoo account. But when I send I receive an error saying - ‘cannot send email. The useneme or password for Yahoo AU is incorrect’. Options are OK or settings. I go to settings and everything looks correct. There is nowhere to re-enter password.

I tried removing account & re-adding. Details and password are accepted when adding account. But I get the same error when trying to send. Same on iPhone and iPad. No problems accessing or using my Yahoo Mail on a computer browser.

Could it be something to do with iOS 11’s new ‘App & Website Passwords’? Saying that it has been okay for me up until today & I updated to iOS 11 a while ago now. Have done an incremental update since though. Something must have screwed it up! :-/

i updated to iOS 11 this morning. Yahoo mail not receiving or sending so I deleted the account and tried to add it again. Now is I just get a message box that yahoo is already installed (which it is not). An hour wasted on this and main mail account now gone on iPad.

Problems started last night (Nov 10) as well. Sent email from yahoo at 5:10, tried to send another about 5 mins later and it failed. Deleted account & reinstalled, hard reboot phone, update to 11.1.1, Yahoo Mail app works, re-installing Yahoo account in iOS mail works, but it will not send an email from iOS Mail, because “username or password incorrect”. Go into account settings and there’s no place to enter a password. Very frustrating. Several other issues with new 11 update. Not happy with Apple now. But still hate Google more.

This morning (Nov 11) I also started getting problems sending yahoo mail with iPhone Mail app. I get the same thing: "The username or password for Yahoo is incorrect" - restarting, deleting and re-adding account both failed to help. If I use the Yahoo Mail app I can send and receive just fine. I think it must have to do with Yahoo, as I have not loaded any iPhone updates recently.

No joy for me sadly. Last night was absolutely fine, everything working normal, and this morning it's gone belly up. I have been on the phone to Apple Support for 2 hours this afternoon, we had multiple attempts at 'adding an account', from both 'yahoo directly' and 'other', exactly as has been described above, but no joy. What confuses me more is that my wifes iPhone (6) is fine, but my iPhone (7), AND both my iPads will not allow Yahoo, therefore is this anything to do with Cloud? Yahoo just keeps saying "the Username or Password for Yahoo is incorrect". I even changed the password today and it works fine in Safari and on my MacBook. I was also advised by Apple Support to update to IOS 11, which I did on all 3 devices...but guess what...no working Yahoo on any of them. Makes no sense.

Now just to add some gloss. If you add yahoo under “Other“ rather than the Yahoo app you only get the mail and not the contacts. If you want the yahoo contacts you have to then go back and add under Yahoo as an account as well. But if you do this first deselect mail otherwise you will be adding two inboxes. You would just add “contacts“ when you do it the second time.

If it is worth something, I started having the same issue after updating to ios 11.

Must mention that around the same dates I added a second yahoo address, for what another user says maybe ios does not know how to manage 2 accounts in yahoo.