I have had many email clients over the years. I have been using Thunderbird for years, but it gets laggy over time with delays in second, being very slow. It has also other issues like reindexing emails from the oldest years back (while displaying nothing) and you wait minutes to see the latest email received…
So I decided to develop my own. And since I use KDE, my choice was clear.
Thus I present Mailo - a new email client with focus on speed, usability and security.
If it’s just for your own consumption, sure - if you’re promoting it to others (as you’re doing here), I personally think it would make sense to go ahead and avoid confusion for your users, and avoid bumping up against the registered trademark that Mailo has established.
Warning: its never a good idea to download+run untrusted binaries as your main user but better use another user account which has no/limited access to sensitive stuff. Or just use flatpak’s rather then appimage’s which run proper sandboxed.
I have seen this email client, but it looked abandoned. I am glad it has a new maintainer. It looks a bit outdated to me, but maybe they can bring it up to date.