Yahoo! mail stopped working with Yosemite

I made no change at all, but somehow after two days of NOT working, I started getting email delivered to my Inbox again. In the past, when this has happened, I would spend hours deleting and recreating and reconfiguring. This time, I changed nothing (and used webmail for a couple of days). Apple Mail remained open and running, and eventually it just decided to start working again. At first a trickle of (new) Inbox messages appeared, then eventually the whole collection of Inbox messages finally showed up. Again, I did not change any configuration at all! Weird.

Yes, this actually works for me as well, with additional information someone mentioned below URL:

https://www.apple.com/support/mail-settings-lookup/

After finding the manual fix in the library for Mail, only one of my email accounts worked. (The other one from the same website never did.) I had no problem with these accounts before the upgrade to Yosemite. Now I cannot do the work for my business.

I have tried to delete all the mail accounts altogether and then add them one at a time. I have used all the possible suggestions for settings from my website host domain.

It just all of a sudden stopped working and kept asking for my password all over again.

I've used Connection Doctor and reset the PRAM.

I have exhausted about 10 pages of suggestions for help from a web search on problems with Yosemite Mail.

Can anyone give any clearer suggestions?

So I've also been experiencing the same or similar issues as others. I did a clean install of Yosemite and then when I was prompted to login to my iCloud account of course I did. It then begins setting the newly installed OS up with my preferred settings from my previois instance of the OS. I.E. my email accounts, Keychain, etc... When I originally signed in I was prompeted with a window saying the password for my xxx@yahoo.com email address was invalid and I could either press cancel or continue. I pressed cancel and thought nothing of it until today.

I was finally frustrated enough not being able to get my yahoo account to sync up I started messing around. I was able to get my yahoo, iCloud, and another POP email account working again by opening System references>iCloud and unchecking the checkbox next to Mail. I then just waited until the process finished and re-checked the Mail checkbox. I was immediately prompted with the same cancel or continue option and I choose continue this time. Shortly thereafter the system prompted me to enter the password for my email account(s), which I did and them voila! Everything started to sync back up again.

I should note that I have a VERY large inbox which did take a while to initially start syncing but it did sync up. I am able to send/ receive from all three of my accounts now with no issues.

I hope this helps someone else experiencing the same issues.

I tried the solution of instead of selecting Yahoo!, I selected 'other account' from the settings and it worked for me too, Now I can check my Yahoo mail easily on my Mac Yosemite!!!!!! 😀

VERY HAPPY 😀 😀

It seemed like once I changed the server port, it started working. thanks!

t seemed like once I changed the server port, it started working. thanks!

You have to

-first click cancel and close out mail,

-then go to this link which yunicornfairy have mention: https://www.apple.com/support/mail-settings-lookup/and follow the instructions.

-Re-open Mail and set it up again

Thank you Jon Widhalm. After struggling with this all night and trying to avoid the slew of multi-stepped, highly technical fixes suggested, I tried the "Add Other Account" trick and was up and running in less than a minute.

How about taking Apple to court and sueing ? (for a vast amount of money)

This worked, Good call : )

I had this problem also. I had to go to my yahoo account on the web page. Under account security. mark this less secured, see next paragraph. This took care of my problem. I logged right in on the calendar. I kept getting a email that someone else was trying to login to my yahoo account. See 3rd paragraph.

Allow apps that use less secure sign in

Some non-Yahoo apps and devices use less secure sign-in technology, which could leave your account vulnerable. You can turn off access (which we recommend) or choose to use them despite the risks.

email:

Someone attempted to sign in to your Yahoo account (ronald.goodman) from an app that doesn't meet Yahoo's security standards. We blocked this sign in attempt, which was made on:

Mon, Sep 19, 2016 4:38 PM EDT from United States.

If you were trying to sign in, then please take one of these actions:

Option 1 (recommended): Use mail.yahoo.com or the Yahoo Mail app for Android and iOS to more securely access your account.

Option 2 (not recommended): If you still want to use an app that uses less secure sign in to your Yahoo account:

Go back to your existing email application and sign in to your Yahoo account again.

Using apps that don't meet Yahoo's recommended security standards may leave your account more vulnerable or less secure.

If you did not try to sign in, then click here https://edit.yahoo.com/config/change_pw and change the password for your account.

For more information, visit our help page at: https://help.yahoo.com/kb/sln26418.html.

Sincerely,

Yahoo

Change the OS system. I had the same problem and I updated to OS Sierra and it works now. Good luck!

I know this post was from 2 years ago, but I just experienced this same problem today. Your solution fixed my problem! I would have never tried the option of choosing "other email"..So thank you very much!

Thank you!! 🙂