Thunderbird for Android Community Forum

I'm having issues sending and outbound email and I'm not getting any error messages from the client. I have confirmed that the email server settings are correct. I am unfortunately unable to find a log or error console on the app to further trouble shoot all I get is a notification of "unable to send mail" with no error codes.

The app is perfect for me, except the text in the inbox page is so small 😭

Can this be changed? Can we get an option for it in settings?

It would be wonderful to have font size and style options.

Thanks

I hope an email translation feature can be added to the application, similar to Gmail's, making it more convenient to translate the content of emails written in foreign languages.

When I access my email on my computer using Thunderbird, I have it set to downloaded the emails locally and remove from the server. Starting today, WHEN I access my email using Thunderbird in my phone, all the messages are still there, and I have to manually delete them, and they still stay on my computer email app. I need Thunderbird on Android to start removing them again once I clear the server.

Dear Thunderbird Team,

I am writing to report a privacy concern and request a feature that would allow users to hide their real IP address when sending emails through SMTP.

When I send an email using Thunderbird with a standard SMTP account (e.g., QQ Mail, Gmail, Outlook), the receiving mail server adds a `Received` header that contains my real public IP address. For example:

```text Received: from ehlo.thunderbird.net ([2409:8a20:1843:3590:xxxx:xxxx:xxxx:cde2]) by newxmesmtplogicsvrszc50-0.qq.com (NewEsmtp) with SMTP id B2A37C97; Fri, 25 Sep 2026 12:44:42 +0800 ```

In this case, `[2409:8a20:1843:3590:xxxx:xxxx:xxxx:cde2]` is my real public IPv6 address. Any recipient who views the full email headers can see my IP address and infer my network location and ISP. This is a significant privacy leak, especially for users who need to protect their identity or location.

Currently, Thunderbird does not provide an easy way to prevent this. Even if I change the `EHLO` argument, the receiving server still records the IP address of my connection. The only practical workaround is to manually set up a proxy or a mail relay outside the client, which is not user-friendly.

I would like to request the following:

1. Built-in proxy support – Allow users to send SMTP traffic through a SOCKS or HTTP proxy, so the receiving server sees the proxy’s IP instead of the user’s real IP. 2. Relay/anonymization option – Provide a simple way to configure an external SMTP relay that strips or replaces the original `Received` headers before forwarding. 3. Documentation or guidance – If a full feature is not feasible, at least provide official documentation on how to hide the sender’s IP using existing tools (e.g., Tor, VPN, or a custom relay). 4. Privacy setting – Consider adding a privacy option that warns users when their real IP will be exposed in outgoing SMTP headers.

Steps to reproduce:

1. Configure Thunderbird with a standard SMTP account (e.g., QQ Mail). 2. Send an email to any recipient. 3. Ask the recipient to view the full email headers. 4. Observe the `Received` header containing your real public IP address.

Expected behavior:

The client should offer a way to anonymize the sender’s IP address when sending via SMTP, either through a built-in proxy setting or by supporting an external relay that can strip identifying headers.

Actual behavior:

The client sends the email directly from the user’s device, and the receiving server records the real IP address in the `Received` header, which is then visible to all recipients.

I understand that SMTP servers often log source IPs for anti-spam purposes, and that the client cannot control what the server adds. However, by providing proxy or relay support, the client can give users a choice to protect their privacy.

Thank you for considering this request. I believe many privacy-conscious users would benefit from such a feature.

Sincerely, wyxtld

Running Android Thunderbird version 23.0. When I look at a message screen, I see an hex shaped icon with an "!" symbol at the top message header. What is the function?

I have a Gmail account. I use a Duck Duck email address as my main email & forward to my Gmail. Can.i assume Thunderbird will download all Duck Duck emails as long as they're forwarded to the Gmail account?

all other apps etc EXCEPT focus. with everything I try to ope eg mail etc, the useless program takes me continuous loops to log in. I go through the verification system multiple times and then it doesnt accept fingerprints and locks me out. this program is unusable and useless so I'm going to remove it.

I'm coming back to Thunderbird, from bluemail, and was wondering if you could add a feature they had. Essentially, you could tap on the profile icon in the inbox, and you'd get a screen with all the messages you had from that address. From there, you had a button at the bottom of the screen that would open a menu with options to: message, mark all read, and delete all. Theres a confirmation dialog after the delete all option is tapped.

Is this something you could add?

Ich habe die Version 22 installiert. Die Signatur hatte ich vor dem Update geschrieben u. eingefügt. Es hatte mir bisher immer die Sig in meinem Format eingefügt. Erst mit meiner kleinen Änderung ging das Format verloren, lässt sich nicht ändern. Egal in welcher Tastatur (gboard od. Samsung), wenn ich versuche einzufügen bzw zu ändern, es wird mir der Zeilenumbruch nur im Schreibmodus im Signaturtextfeld bei der Tastaur nur bei Änderungsversuch des Textes dort nicht mehr zur Verfügung gestellt.

OpenKeychain is a free and open-source Android app that implements the OpenPGP standard. It lets you manage cryptographic keys and use them to encrypt, decrypt, sign, and verify text, files, and messages so that only the intended recipients can read them and so that authenticity can be checked.

It is no longer actively developed for new features (maintenance mode with security fixes only), though a maintained hard fork called OpenKeyRing exists that continues development and adds features such as S/MIME support.

Why if you save 2 drafts does the second save wipe out the first? Why is the spell checker used in Write so patchy and disjointed? Why is the select text- cut copy paste- so useless in amending mail?

Why does it somtimes eat emails - they just disapperar.? Why is the share function so limited - docx-

Alan

Something is wrong with Thunderbird. I have uninstalled and reinstalled many times. Unable to get inbox emails. Infact no emails are coming. You can see the processing circle working but never completes action. Not sure if I am doing something wrong or the app is the problem. Using Samsung tablet. All apps updated. Please help.

Android app is Missing Spam Folder. A Yahoo filter on the server moves important emails to the spam folder. The spam folder does not sync with my other folders. Yahoo places these messages inside the Thunderbird app but they cannot not be read, I cannot find the folder, I cannot sync the folder, and the app does not give any other option on the setting panel. On my phone I have to have both the Firebird and the Yahoo App to see all folders. How can I fix it_

Thank you.