Hello there You did lost connection receiving email with the program Thunderbird? Can you explain some more about the situation there, do you send mail? Did you had received message s or warnings on the pc screen itself lately ? Can you send it to us then if you had one , errors are welcome and messages to. Do you use heavy antivirus programs yes ?vpn services?🎅 Do you receive completely nothing inbox or do you got some other mail to? https://support.mozilla.org/en-US/kb/how-to-make-screenshots