Pandora Mail is Windows desktop e-mail client used to access POP3/IMAP mailboxes and to send mail via standard SMTP protocol.

Mailbird is described as 'Manage emails, integrate apps, and personalize your workspace with AI-powered drafting, centralized management, and customizable features for efficient workflows' and is a very popular Email Client in the office & productivity category. There are more than 50 alternatives to Mailbird for a variety of platforms, including Windows, Mac, Linux, iPhone and Android apps. The best Mailbird alternative is Thunderbird, which is both free and Open Source. Other great apps like Mailbird are Betterbird, Microsoft Outlook, Evolution and Spark Mail.
Pandora Mail is Windows desktop e-mail client used to access POP3/IMAP mailboxes and to send mail via standard SMTP protocol.

Email client and email notifier in one. Allows you to send, receive, and manage e-mails, get notifications of incoming email messages from your buddies, coworkers or family members online. Contains free email sender interface ready to cooperate with other software via XML, CSV...




FileOne is an organizer that combines and integrates your notes, documents, contacts, email, photo's/images, calendar and agenda with multimedia.




Supamail AI turns hundreds of emails in last 24 hrs into clear summaries, smart categories, and easy replies so you never feel overloaded again.




Lightweight Windows taskbar app that shows unread email counts from all your Gmail and Microsoft 365 accounts, no browser or Outlook required.






yMail2 is a standalone email client for Windows (and Linux), available for free since 2003. Now with SSL support included so you can use it with Gmail and Hotmail POP3 and SMTP accounts.

I guess you could say it's a lot MORE - combining other things along with email client - but not really an email client.