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Seeking Assistance: Proton VPN and Thunderbird Compatibility Issue

  • 8 ŋuɖoɖowo
  • 0 masɔmasɔ sia le wosi
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  • Nuɖoɖo mlɔetɔ Hopp

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I had just installed Proton VPN.

When the VPN is enabled, it prevents me from sending mail through Mozilla Thunderbird. When I disable the VPN, the mail sends OK.

Is there a setting I need to change in Thunderbird?

Thanks & Regards, Shubham

I had just installed Proton VPN. When the VPN is enabled, it prevents me from sending mail through Mozilla Thunderbird. When I disable the VPN, the mail sends OK. Is there a setting I need to change in Thunderbird? Thanks & Regards, Shubham

All Replies (8)

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Hi Shubham, Just to be sure. You are not using Proton mail, you are using your existing email with the proton VPN? If yes, is it just the sending that doesn't work? If this is the case, could you try to use the alternative ports 465 or 587 as an outgoing SMTP port within Thunderbird settings in combination with SSL/TLS.

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I just want to inform you. I'm a ProtonMail Enterprise user, and I'd like to use Proton VPN to send emails through Thunderbird. If that's possible, please assist me.

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Could you answer my questions?

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Bogomil Shopov - Бого said

Could you answer my questions?

I just want to inform you. I'm a ProtonMail Enterprise user, and I'd like to use Proton VPN to send emails through Thunderbird. If that's possible, please assist me.

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Bogomil Shopov - Бого said

Hi Shubham, Just to be sure. You are not using Proton mail, you are using your existing email with the proton VPN? If yes, is it just the sending that doesn't work? If this is the case, could you try to use the alternative ports 465 or 587 as an outgoing SMTP port within Thunderbird settings in combination with SSL/TLS.

I was talking about those questions ^^


If you are using a proton email, you would need to install the Proton Bridge for Thunderbird: https://proton.me/support/protonmail-bridge-clients-windows-thunderbird

Bogomil Shopov - Бого trɔe

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Bogomil Shopov - Бого said

Bogomil Shopov - Бого said

Hi Shubham, Just to be sure. You are not using Proton mail, you are using your existing email with the proton VPN? If yes, is it just the sending that doesn't work? If this is the case, could you try to use the alternative ports 465 or 587 as an outgoing SMTP port within Thunderbird settings in combination with SSL/TLS.

I was talking about those questions ^^


If you are using a proton email, you would need to install the Proton Bridge for Thunderbird: https://proton.me/support/protonmail-bridge-clients-windows-thunderbird

I am already using the proton bridge and proton VPN as well. there after we are facing the same issue, as we are mention in my first query.. could pls help?

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There is nothing more I can do. I advice you to contact Proton VPN support for help.

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Bogomil Shopov - Бого said

There is nothing more I can do. I advice you to contact Proton VPN support for help.

Hi Bogomil,

i have open a IP Split Tunnel in proton VPN. and then the issue was resolve...

thanks for your support and quick response...

Thanks & Regards, Shubham

Hopp trɔe