How to prevent timeout error in Thunderbird?
1. In Windows, open Thunderbird and go to Tools -> Options -> Advanced -> General -> Config Editor . 1. In Mac, go to Thunderbird -> Preferences -> Advanced -> General -> Config editor… Click to confirm “I accept the risk!” 2. In the search field, type in mailnews.tcptimeout . 3. Right click on that row and select Modify . 4. Change the value to a higher number, such as 1000 or 2000 . If still problem continues Call +1-856-514-8666 for more help and support of Mozilla Thunderbird .