The issue you are facing with sending emails in Thunderbird after switching to IMAP is not uncommon. It’s crucial to note that if you want to resolve this effectively, you should try setting up your email account using Apple’s Mail app instead of Thunderbird.
It is worth mentioning that Comcast no longer manages its own email service; this responsibility has been passed on to Yahoo. As a result, you now send and receive Comcast emails through Yahoo’s system.
Understanding which Mac and operating system you are using is essential, as older OS versions may struggle with Yahoo’s authentication requirements. Many users, including myself, have encountered this problem.
Please provide your Mac model and the year it was manufactured, along with the version of the OS you have. If you’re using a newer Mac and OS, you can follow these steps: either delete the existing IMAP account (your emails will be retained on the Comcast/Yahoo server) or leave it as is for now.
Next, go to Settings, select “Internet Accounts,” and click “add account.” Try selecting “Yahoo” and create a new account with your Comcast email address and password.
If this doesn’t work, return to the add account panel and choose “add other account.” Enter your Comcast email and password again to see if this resolves the issue.
If you have an older Mac and OS, Yahoo may require an additional security step. You might need to create a “third-party app password” to authenticate your account during the setup process.
Remember to save this app password in a secure location, like a plain text document, for future reference. After creating the password, repeat the account setup using “other account” and substitute your regular password with the app password.
I hope this guidance helps you resolve your issue. Good luck!
Leave a Reply