BlueMail for Linux ships through the Snap Store. Pop!_OS is based on Ubuntu but ships without Snap preinstalled (System76 favors Flatpak). Unlike Linux Mint, nothing blocks Snap — snapd is simply absent and installs normally from the repositories. BlueMail requires a 64-bit Intel/AMD (amd64) system.
Steps to Install BlueMail on Pop!_OS:
Update the package list:
sudo apt update
Install Snap: Install the Snap daemon (
snapd):sudo apt install snapd
Log out and back in: Log out of your session and back in (or restart) so the Snap paths are picked up correctly.
Install BlueMail via Snap:
sudo snap install bluemail
Once installed, launch BlueMail from your applications menu or by running bluemail in a terminal.
Conclusion:
Pop!_OS leaves Snap out of the default install, but since it's Ubuntu-based, snapd installs in seconds and BlueMail is one command away.