Polymail Alternatives

Airmail is a lightweight and lightning fast mail client for Mac.

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

Open Source

VoIPstudio is an award-winning VoIP system that offers businesses of all sizes a scalable communication solution. It’s inexpensive, easy-to-use, offers a full suite of PBX features, and is fully integrated for CRM.

Try for free paid Free Trial $4.99 / Monthly (User)

Mailbird is the best email client for Windows 7, 8 and 10

Thunderbird is a free email application that's easy to set up and customize - and it's loaded with great features!

Privacy-aware email app for Mac & iOS

There’s big news attached.

eM Client is a fully-featured email client for Windows and macOS with a clean and easy-to-use interface. eM Client also offers features for calendars, tasks, contacts, notes, and chat.

freemium

Email at its best, new from Basecamp.

paid Free Trial $99.0 / Annually

The Power Email App for busy professionals, like you.

At Mixmax, our mission is to change how the world communicates. We’re an email productivity platform that helps sales, customer success, and recruiting teams do their jobs better.

Organize your world. Outlook’s email and calendar tools help you communicate, stay on top of what matters, and get things done.

Gmail is available across all your devices Android, iOS, and desktop devices. Sort, collaborate or call a friend without leaving your inbox.

The Nylas Cloud API powers your application with email, calendar & contacts features. Built-in features for better email, calendar, and contact management.