Opera Mail Alternatives [Page 2]

K-9 is an opensource email client making it easy to chew through large volumes of email.

Sylpheed is a simple, lightweight but featureful, and easy-to-use e-mail client (mailer, MUA).

The #1 email warming service to improve your deliverability by generating realistic and meaningful engagement to your emails. Easy-to-use solution to help you land in the main inbox instead of the spam folder.

Visit website paid $19.5 / Monthly (Pro)

Zoho Mail is a secure, encrypted, and enterprise-ready email solution, a suite of apps tailor-made for your organization's needs.

freemium $1.0 / Monthly (per user)

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

MailMate is an alternative email client that was designed for the macOS.

GyazMail is an advanced level of an email account management system for the Mac OS X operating system users.

Native email app for email productivity.

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

Get help and how-to info for Windows Essentials—including Windows Live Mail, Movie Maker, and more.

Newton is a fully featured mail client available for Android, iOS, macOS and Windows.

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.

Yandex.Mail is a free email service that is also one of the most popular mail services in Russia.

Hiri is the best email client for Managers on Windows, Mac and Linux.