Hi my name is ***** ***** I may be able to assist. There is a setting the Yahoo and GMail placed on their servers that started blocking POP and IMAP clients that they deem unsecure. You might want to check this setting to Allow less-secure apps. Give me a sec and I'll post the process for both.
For Yahoo, logon to your webmail and then click on this link:
Select Allow apps that use less secure sign in.
- To turn off, you can simply deselect.
For GMail, logon to GMail then click this link below:
Next to "Access for less secure apps," select Turn on.
It's possible that the computer will stop functioning in the near future with this setting turned on. The setting is for all devices that use POP or IMAP to connect to the service. I've had to do this with several people so far. The computer client most likely still has a valid connection to the service that has not expired yet.
When you set them both back up again, did they "Verify" and then just not pull everything in?
Have you rebooted the phone yet? I did not see if that was done in the troubleshooting info on your question.
I wouldn't do a factory reset. Just try the power down reset. Hold down the power button till the "Slide to Power Off" slider comes up and then slide to power down. Wait a few secs. and then hold do the power button to turn it on.
Unless that is what you already did. I just want to make sure.
The Yahoo app is the preferred method but I don't like it either. Yahoo will notify you for any changes done.
Is 2-step authentication turned on for both Yahoo and GMail?
Which e-mail protocol are you using, POP or IMAP?
If you go into the settings under Mail, Contacts and Calendars, tap each service and it should say on the Incoming settings.
Outgoing will always be SMTP. What does the server name setting say? That might give you an indication.
Does your Yahoo say Yahoo Mail Account?
If so, we can try a manual setup to connect to Yahoo.
Ok. Let's remove the Yahoo account. Then Add Account and choose Other.
Enter your name, email address, password, and a description for your account.
Outgoing Mail (SMTP) Server
Your login info
Host name will be imap.mail.yahoo.com
User Name is ***** ***** address
Hmm... The option might be available afterward. Go ahead and tap Next or Done.
That's bizzare. I'm not sure what else to do. I can put your question back out into the queue and see if there is another expert that might have an idea if that works for you. Sorry that I was not able to get you back up and running.
When creating a new email account choose yahoo and it will populate all the settings for you.