When using web mail in QuickBooks, after entering your email password you get the following error message:
Couldn't Connect to Email Server
We were unable to connect to the email server for your email provider
This has been seen mostly when using a Yahoo email address.
Intuit recommends more than one solution for this problem. The first solution may solve your problem, or you may need to try all of them to resolve the issue. For best results, perform the solutions in the order shown.
Solution 1: Update to the latest release
Solution 2: Check the settings in the web mail preferences
Solution 3: Reset Internet Explorer Settings to default