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PGP with Thunderbird for Android

mbx user1 shared this question 20 days ago
Need Answer

Hey there!

Is it possible to use three different email-aliases with their own pgp-key on Thunderbird for Android? WIth Thunderbird on my Computer it is.

It looks like, that you can only use one PGP key from OpenKeyChain with Thunderbird for Android or you have to change the key every time you use an other alias of that three.

A workaround like adding my Mailbox mailaccount three times an link each alias to one account works but then an email shows up three times in the unified folder.


Any solutions out there?

Replies (2)

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I haven't used Thunderbird for Android (K-9 Mail) in a while, but I recall that it could not associate PGP keys with identities.


FairEmail for Android is able to associate keys with identities and in the case of no associated key prompts for the writer to select a key.

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Hello,

Yes, it is possible to use three different email aliases with their own PGP key in Thunderbird for Android. There is a little setup the needs to be in place in order to use it, but at the end, you may need to change the default PGP key every time you are going to send an email with different alias.

You may need to make sure your Mailbox.org alias addresses are configured in Thunderbird for Android under Account Settings -> Sending mail -> Manage Identities.

You may also need to make sure you have imported the private keys of your Mailbox.org aliases into OpenKeychain.

After that, in Thunderbird for Android, you may go to Account settings -> End-to-end encryption -> Using key: xxxxxx@mailbox.og -> three dots on the upper right -> List unrelated keys, from there, select the private key of the email alias you are going to use. That setting kind of sets a private key as default for sending emails.

After that, you can compose the email using the alias address you selected the private key for. If you do not use the corresponding private key for the email/alias address, the recipient will see some type of exclamation mark saying something is wrong with the key that was used to sign the message.

I hope that helps.

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