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My setup for using ProtonMail on PinePhone.
ProtonMail works very well in Firefox on my desktop machine and on the iOS app. On the PinePhone, it is very slow (yet still usable) in the browser.
Another way to use ProtonMail is to run Proton Bridge to encrypt/decrypt the mailbox locally, and access the mail with an email client. However, the site says Proton Bridge is only available for subscribers. I have note tested this with a free account.
Install Geary email client if you don't have it:
sudo apk add geary
Build and install Proton Bridge (without GUI) from source:
sudo apk add make git go gcc libsecret-dev libc-dev git clone https://github.com/ProtonMail/proton-bridge cd proton-bridge make build-nogui
If you are on Alpine 3.19 (postmarketOS 23.12), then you might need to build with additional flags (due to a musl issue with some functions):
CGO_CFLAGS="-D_LARGEFILE64_SOURCE" make build-nogui
Move the main executable to a directory under $PATH:
cp bridge ~/.local/bin/
Note: `bridge` is the main executable, and `proton-bridge` is a launcher, but that is less noticeable for CLI. The main difference is that `bridge` can run in non-interactive mode ("-n" switch), which is relevant later
Configure Proton Bridge via CLI interface:
bridge --cli
Login: Use your ProtonMail username, not the email alias. Sync might take a while.
>>> login Username: Password: Authenticating... Account username was added successfully. >>> A sync has begun for username A sync has finished for username.
Get the IMAP/SMTP info:
>>> info Configuration for username@proton.me IMAP Settings Address: 127.0.0.1 IMAP port: 1143 Username: username@proton.me Password: a1b2c3d4e5f6g7h8i9j0k1 Security: STARTTLS SMTP Settings Address: 127.0.0.1 SMTP port: 1025 Username: username@proton.me Password: a1b2c3d4e5f6g7h8i9j0k1 Security: STARTTLS
Remember it for the next step.
Since Proton Bridge hosts IMAP and SMTP servers, you need to run both Proton Bridge and Geary at the same time.
Once you set up Proton Bridge with your account, you can run it in non-interactive mode:
bridge -n
While Proton Bridge is running, run Geary and add a new account. Enter username and password from IMAP/SMTP info from Proton Bridge. In my case, Geary automatically connected to localhost, which is correct.
Wait for Geary to sync the mail and you're set.
Since Proton Bridge claims it can take up to half of all RAM, I don't want to run it all of the time, nor make it into a service. All I want is to be able to easily run Proton Bridge and Geary at the same time, and then to shut down Proton Bridge when I close Geary.
This is the script to do so:
bridge -n & geary; kill $!
Quick explanation:
If you want a nice desktop icon, here is one from Proton Bridge's site:
Create a directory for icons and save the icon to it: (change `/home/user` to the appropriate user)
mkdir /home/user/.local/share/icons wget https://yaky.dev/2023-12-15-pinephone-protonmail/proton-bridge.png -P /home/user/.local/share/icons/
Make a desktop entry: (change `/home/user` to the appropriate user)
$EDITOR /home/user/.local/share/applications/protonmail.desktop
[Desktop Entry] Name=ProtonMail GenericName=Email Comment=Send and receive email Keywords=Email;E-mail;Mail; Icon=/home/user/.local/share/icons/proton-bridge.png Exec=/bin/sh -c "bridge -n & geary; kill $!" Type=Application Terminal=false Categories=GNOME;GTK;Network;Email;
Now just launch the new icon and enjoy the 2-in-1 ProtonMail experience.
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