Polymail
Airmail
Spark Mail
Mailbird
Thunderbird
Canary Mail
Apple Mail
eM Client
Roundcube
Zimbra
iRedMail
mailcow
Rainloop
Horde
SOGo
Postfix
Polymail RoundcubeBased on our record, Roundcube seems to be a lot more popular than Polymail. While we know about 16 links to Roundcube, we've tracked only 1 mention of Polymail. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
Polymail - This one is a lot like Twobird but with a lot more features. It's a different type of email client. It's really cool, but the Windows version is just a web app. It's available on iOS as well. Source: over 2 years ago
I have tried several, and liked none of them. I'm currently on Geary, but it's lacking in functionality, and it has things like search results being a bit different upon each of my searches. Starred messages cannot be shown on top. Eyeroll. I think Evolution and Thunderbird are the top contenders, and of the self-hosted ones, Roundcube. https://wiki.gnome.org/Apps/Geary https://roundcube.net/. - Source: Hacker News / about 1 month ago
You could try a standalone email client like Mozilla's Thunderbird, or if you're experienced running a web server, you could check out something like Roundcube. I suppose you could even run it locally if you're familiar with PHP and/or Docker. Source: about 1 year ago
What I really miss is a "web companion" for Thunderbird, basically something like https://roundcube.net/ or https://www.horde.org/apps/webmail, but a bit more powerful and with better UX. I'd like to use a Google Addressbook within such app, for example (there is a completely outdated plug-in for RoundCube). Another important thing would be powerful and fast search. - Source: Hacker News / about 1 year ago
Alternatively if you want to keep what you have I wouldn't recommend using the SoGO even though it's the nicest and most modern option. Mainly because it's a full groupware client and will require a lot of configuration. Instead using Roundcube is probably your best option. Source: over 1 year ago
Roundcube might fit the bill for you. Source: over 1 year ago
Airmail - Airmail is a lightweight and lightning fast mail client for Mac.
Zimbra - Zimbra is trusted by over 500 million users to increase productivity with a complete set of collaboration tools while maintaining total control over security and privacy.
Spark Mail - Spark helps you take your inbox under control. Instantly see what’s important and quickly clean up the rest. Spark for Teams allows you to create, discuss, and share email with your colleagues
iRedMail - A fully fledged, free email server solution, an open source project (GPL v2).
Mailbird - Mailbird is the best email client for Windows 7, 8 and 10
mailcow - An open source mailserver suite.
