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Fails to connect to Proton Mail Thunderbird Ver: 78.6.0 (32-bit)

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  • Last reply by Toad-Hall

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Hello, I have used Thunderbird for years. However, I have been trying to set up a Proton Mail account and the setup fails! I have installed the Proton Bridge and have a paid account for Proton Mail. Attached is the error picture. How do I setup Proton Mail in Thunderbird? Please help!

Hello, I have used Thunderbird for years. However, I have been trying to set up a Proton Mail account and the setup fails! I have installed the Proton Bridge and have a paid account for Proton Mail. Attached is the error picture. How do I setup Proton Mail in Thunderbird? Please help!
Attached screenshots

Chosen solution

Suggest you have a look at the settings at this link: Server Settings: https://protonmail.com/bridge/thunderbird#3

For 'Custom Domains' https://protonmail.com/bridge/thunderbird#4

when adding mail account: 'Menu icon' > 'New Message' > 'Existing mail account' Enter name Enter email address The password you use should be the 'bridge password' from your bridge account settings screen and not the password for the protonmail account. click on 'Continue' It may not find correct settings so click on 'Advanced Config' button

IMAP Server name:127.0.01 Port: 1143 Connection Security: STARTTLS Authentication Method: Normal Password Username : full email address

SMTP Server name:127.0.01 Port: 1025 Connection Security: STARTTLS Authentication Method: Normal Password Username : full email address

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i'm note sure, but i think , protonmail does not have mail-server service for free account. protonmail is a WMSP (webmail service provider). if your account is free type, then TB as IMAP/POP email-client, cannot get/send email. i think , protonmail IMAP/POP mail-server service is for paid type account.

when/if you 1st opened paid account then they have sent an email with mail-server name/address info, use mail-server from that.

WMSP (webmail) based (free) email account can be accessed over HTTPS based web-browser-tab inside TB email-client.

you can see the addon/extension that are used to Access Webmail Sites Via Web-Browser-Tab Inside Thunderbird , for accessing "Mail.com", outlook/hotmail, gmail, yahoo, etc.

also see Protonmail doc/support info, here , you may need their "Bridge" app. that app will create+allow to use two local mail access ports (let us assume: port 1143 for IMAP , port 1025 for for SMTP). then inside TB's mail-account (for "free" protonmal account) , you will have to specify 127.0.0.1 as IMAP mail-server name/address , and specify same 127.0.0.1 as SMTP mail-server name/address , and select port 1143 for IMAP mail-server , & select port 1025 for SMTP mail-server. Protonmail PAID account holders can use mail.protonmail.com as IMAP mail-server name/address, & secure/encrypted port is 993, and "SSL/TLS" encryption. not sure about their SMTP mail-server for paid account.

Modified by atErik

more options

Chosen Solution

Suggest you have a look at the settings at this link: Server Settings: https://protonmail.com/bridge/thunderbird#3

For 'Custom Domains' https://protonmail.com/bridge/thunderbird#4

when adding mail account: 'Menu icon' > 'New Message' > 'Existing mail account' Enter name Enter email address The password you use should be the 'bridge password' from your bridge account settings screen and not the password for the protonmail account. click on 'Continue' It may not find correct settings so click on 'Advanced Config' button

IMAP Server name:127.0.01 Port: 1143 Connection Security: STARTTLS Authentication Method: Normal Password Username : full email address

SMTP Server name:127.0.01 Port: 1025 Connection Security: STARTTLS Authentication Method: Normal Password Username : full email address

Modified by Toad-Hall