Roundcube Alternatives [Page 4]

A set of powerful APIs that enable you to send, receive and track email from your app effortlessly whether you use Python, Ruby, PHP, C#, Node.js or Java.

Open Source

Mailo is an email client where you can send and receive emails to and from anyone with an email address.

Warm up your cold email inbox, and never land in spam anymore!

Try for free freemium $9.0 / Monthly

DAViCal is a server for calendar sharing.

MailEnable is a Windows based mail server and email server program that is packed with the state of the features and functions like antivirus and spam filtering system, webmail management system, cardDAV, CalDAV and much more.

Learn why more developers choose SendGrid for their email deliverability service to send transactional emails triggered by web apps. Get started for free

Boost your productivity with reliable access anywhere with services like email, calendar, file sharing, meetings, instant messaging, and Office Online

Axigen is an integrated email, calendaring & collaboration platform, built on a Linux mail server technology.

Disposable email address application.

Microsoft Office is an office suite of desktop applications, servers, and services for the Microsoft Windows and OS X operating systems.

On-demand technical interview coaching by engineers

The Cyrus IMAP server differs from other IMAP server implementations in that it is generally...

Email, calendars, and contacts to highest standards of security, privacy and reliability.

paid Free Trial $3.0 / Monthly (per user)

Starting with version 0.9.8, mu provides an emacs-based e-mail client which uses mu as its back-end: mu4e.