Can't add email accounts to Apple Mail
Hi,
I have been successfully using Apple Mail on my iMac (2015) running High Sierra. I had 4 email IMAP accounts set up on it (icloud, yahoo, gmail and one from Siteground). They were all running fine, then for no apparent reason the yahoo and siteground ones stopped working - they couldn't connect to the server. I deleted the accounts and then tried to re-add them but mail wouldn't let me. In the case of yahoo I got this message:
In the case of the siteground email I got an "unable to verify account name or password".
I logged onto webmail for both accounts successfully. I reset the password for my siteground account just in case and managed to login via webmail and my iphone, but am still unable to set up a new account in apple mail.
I have successfully added both email accounts to Mac Outlook and can send and receive with no problem.
I am unable to add the yahoo account to my iphone although I have been able to add the siteground one.
Has anyone got any advice for next troubleshooting steps?
Thanks
IMAC (RETINA 5K, 27-INCH, LATE 2015), macOS High Sierra (10.13.6)