Yahoo email not working in mail app with iOS 11

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.

You need to remove the yahoo account. Then go into Yahoo on your computer. Click on your “account“ and then click on security settings. Change the setting that prevents unsecure app from signing into your Mail account to allow. Then re-add the yahoo account. You might be able to add the yahoo account using the regular yahoo account setting on the iPhone. Or you may have to put it in as “other“ and use the settings in the above posts. According to Yahoo you can then change the unsecure setting back as before. However when I did that I started getting sent messages rejected again, so I have left it allowing un secure email apps to login.

I know & when I went to security it wasn't there. I then clicked on the link that yahoo sent me to change the setting & when the link took me to security then the option showed up. When I changed that setting & did nothing else on my iphone I am currently able to send/receive email.

I Just accessed the "allow apps that use less secure sign in"

just to reiterate:

Go to yahoo

Go to your name on top click it

Go to Account Info

Go to Account Security

Go to the bottom to: Allow apps that use less secure sign in

When I did this it worked. Can receive and send emails, however I do not feel it is safe. So I deleted yahoo again in settings. I will use the Yahoo app and see if this is corrected or I get so frustrated with it.

Hope this helps everyone and thank you all for your tremendous help today. I thought I was going out of my mind.

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.

The ‘string of replies’ did not work for me because strangely I don’t have those options in my settings. What I think worked is simply creating a new password from my computer. It seemed to update my iPhone and iPad. There still isn’t a place in the app to enter password but like I wrote, it appears to be working again. I hope just creating a new password will work for you too!

Look higher in the string and follow the instructions, including changing the security setting on Yahoo on the computer and deleting your Yahoo account on the phone and then adding back as an "other". This fix works!

My mom was able to enter a password by going to settings>accounts and then selecting her AOL account and theres a place to enter your password. Apple for some reason decided to centralize their accounts it looks like regardless of the context (e-mail, fb, twitter, etc.) Hope this helps!

I had the same problem as Jeff. This solution (although directed at a slightly different problem) worked for me:

https://forums.yahoo.net/t5/Password-and-sign-in/Yahoo-keeps-asking-me-to-reente r-my-password-from-my-iPhone-iPad/td-p/108923

Same problem. All began a few updates ago often my yahoo mail in iOS mail app disappears all together then begins a download which takes hours. Also not getting all mail but mail comes to yahoo app instantly. Called Apple 7 times over months. No one can help or told they never heard of that before. Reset phone 3X. Deleted yahoo mail re installed. Same problem. Can only rely on yahoo app which stinks to not be able to use iOS built in email app. Apple glitch issue? Yahoo issue ? Months later no one can answer.

Thanks I just saw same complaints. Didn’t read specific instructions how to fix will sift through all threads again and yes assume it’s yahoo and issue with yahoo after recent updates. Just sad no one at yahoo or Apple can suggest a fix. The world we live in i guess

This solved it for me! Thank you. I had to allow “less secure apps”

Even the adding of an account using the imap service didn’t work... when my account finally started working I had three unread email from yahoo saying “sign in attempt prevented”... thanks yahoo.

I did get a reply from another person here which helped. Go to yahoo under security n settings and allow 3rd party mail apps. It’s not 100% but much better. Bottom line it’s an issue since 11.0 update and yahoo mail fetching. Time for me to consider ditching Apple or yahoo or both. I ONLY say that because it’s unacceptable after several updates there is no resolve. And clearly it’s a major problem which no update or yahoo seems willing t o fix after months of this nonsense.

Thank you for the information. I will definitely try this. Yes, it is certainly frustrating when you can’t rely on the mail app to update and frankly just plain work with something as fundamental as our emails, which most of us rely on for most of our communication. Hopefully, Apple will figure it out.

This is very frustrating. It started 2 days ago and now like what happened back in September apple's mail app won't check yahoo mail. This is yahoo's attempt to make us use their app. Total crap and i am ready to ditch yahoo. There are plenty other email providers. So frustrating and unacceptable!