Mozilla Thunderbird Email Client - Google Email - Can't Send Emails? Receive Emails Works?


Using Manjaro KDE fully updated.

I noticed recently that I can’t successfully send emails in Mozilla Thunderbird email client?
(receive email appears to be working fine)

EDIT #1: I use Google Gmail

Troubleshooted a bit:
The above only occurs when using ExpressVPN VPN.
If I disable the VPN, I can send emails fine?

Any ideas?


Ask Google? They maybe block suspicious new IP.

If it works without the VPN, the likely answer is that Gmail is blocking the VPN’s IP address.

Thunderbird says the email was sent, but it’s never received.
Should Thunderbird be showing an error?