Yahoo email not working in mail app with iOS 11

My yahoo email is not updating the inbox after I upgraded to iOS 11.0.1. The junk (spam) email still works but not the inbox. I have removed it and rebooted several times. The yahoo mail app works fine but I do not want to use it permanently. Any thoughts?

iPhone 7, iOS 11.0.1

Posted on Oct 2, 2017 12:16 PM

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Posted on Nov 11, 2017 7:39 AM

Just been playing around with this some more... I deleted the account (again) but when I re-installed it, instead of choosing the preset "yahoo" setup option l clicked "other", then manually set up the account using the following settings


incoming Server

Server - imap.mail.yahoo.com

Outgoing Mail (SMTP) Server

  • Server - smtp.mail.yahoo.com
  • Port - 465
  • SSL - Yes


Now seems to be working and I have successfully sent and received emails

185 replies

Nov 11, 2017 11:21 AM in response to Korgs

This fixed it! Delete the yahoo account. Put it back as an “other”. Use the setting as posted above. And be sure and go on the computer yahoo account under user name/security settings and check allowing an “unsecure app to have access”. After set up can go back and change that setting. VERY INTERESTING, this happened after I upgraded wife’s phone to 11.1.1. But it also, at the same time then had the same bad effect on her old iPad running IOS 9, even though no changes were made to the iPad. After fixing as above on the iPhone, the iPad now works as well.

Dec 14, 2017 7:05 AM in response to Jeffkubec

My email started malfunctioning about a week ago so around 1 December. I’m curious if the purchase of Yahoo by Verizon has anything to do with it. Being devils advocate here. It’s seem to start after that acquisition was approved and perhaps there’s been some server changes. I don’t think Verizon would want to fight with Apple but rather maybe changing the addresses of the servers. At any rate, because Verizon also have cell phone service it would be an all parties best interest that they work this out and quickly.

Dec 19, 2017 11:33 AM in response to Jeffkubec

I am having the same issue with Yahoo email, except that I am still on iOS 10.3.3. This started about a week ago. There are many people complaining about this on the Yahoo help community forums, though the moderators are marking the threads as solved despite acknowledging that their "engineers" are working on it. If I delete the Yahoo account in iOS mail settings and set up a new account, it works for a while before invariably failing to download emails again a few hours later. This is very frustrating.

Jan 29, 2018 5:44 AM in response to Spooky D Cat

The issues with the Apple iPhone App are making it impossible to use.

Shifting to the Yhooo Mail App. At first glance it is clear it is not very user friendly and lacks features - Single landing page for all accounts, calendar sync- just to name a couple of obvious ones. Have not turned on notifications - I think it would popup a alert on every email. That would be annoying.


But if it works better on the core basic feature - deliver email reliably/timely - that would be the choice.

It is a shame that basic email itself is becoming a problem.

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Yahoo email not working in mail app with iOS 11

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