NewtonHQ Alternatives (January 2026)

Newton - Supercharged emailing on iOS, Android, Mac & Windows

https://www.newtonh.com/

Newton supercharges your email with powerful features like Read Receipts, Send Later, Snooze & more. Works with Gmail, Google Apps, Exchange, Outlook, Office365, iCloud, Yahoo & IMAP.

4.5/5

3+ reviews

Reviewed on:

BlueMail - The Best Email App for Windows, Mac, Linux, Android and iOS

https://bluemai

.me/

BlueMail is a modern, mobile and desktop, powerful Email management tool with a sleek design, unified inbox and support for all your accounts: IMAP, Exchange,POP3.

Mailbutler: Your inbox, smarter.

https://www.mailbutle

.io/

Mailbutler is the email software extension plugin for Apple Mail, Gmail, and Outlook that helps you stay productive and professional.

Spark Mail — Smart. Focused. Email.

https://sparkmailap

.com/

Spark helps you take your inbox under control. Instantly see what’s important and quickly clean up the rest.

The Power Email App - Postbox

https://www.postbox-in

.com/

Postbox is the power email app for busy professionals, like you.

Superhuman | Blazingly fast email for teams and individuals

https://superhuma

.com/

The fastest email experience ever made. Blazingly fast, delightful, and stress free. Get 4 hours back every single week.

Shortwave — Email like never before

https://www.shortwav

.com/

Supercharge your productivity with AI writing, search, scheduling, and more

Kiwi for Gmail | The Best Desktop Gmail and Office Suite for Mac & Windows

https://www.kiwiforgmai

.com/

Elevate your Gmail & Google Workspace with Kiwi for Gmail. Quickly access Docs, Sheets, Slides and Drive apps with one powerful desktop office suite - Now on both Mac and Windows! Get started now.

Mailspring - The best free email app

https://www.getmailsprin

.com/

Mailspring: The open-source, extensible email app for Mac, Linux, and Windows with open tracking, link click tracking, contacts enrichment data and more.

Business Email Services - Amazon WorkMail - AWS

https://aws.amazo

.com/workmail/

Amazon WorkMail provides secure, managed business email and calendaring with support for existing desktop and mobile email client applications.