SMTP Server

Dovecot

Dovecot is an open-source IMAP and POP3 email server for Unix-like operating systems.

PowerMTA

PowerMTA is an advanced email delivery solution that offers high performance and reliability for sending large volumes of email.

Calypso

Calypso is a comprehensive software solution for project management and team collaboration.

Sendmail

Sendmail is a general purpose internetwork email routing facility that supports many kinds of mail-transfer and delivery methods.

EmailSuccess

EmailSuccess is a comprehensive email marketing software that offers advanced features for creating, sending, and tracking email campaigns.

sSMTP

sSMTP is a simple and secure program for sending outgoing email from a computer to a mailhub.

Microsoft SMTP Server

Microsoft SMTP Server is a mail server that allows you to send and receive emails using the Simple Mail Transfer Protocol (SMTP). It is a part of Microsoft Exchange Server.

OpenSMTPD

OpenSMTPD is a free and open-source server-side SMTP implementation. It aims to be simple to set up, reliable, and secure.

MailEnable

Mail server software for Microsoft Windows. Provides email, calendaring, and collaboration features.

SendPulse

SendPulse is a marketing automation platform offering email, SMS, and web push notifications.

msmtp

msmtp is a simple and efficient mail transfer agent with support for various authentication methods and encryption. It is a reliable solution for sending emails from a computer.

blat

blat is a versatile software tool for managing projects and tasks efficiently.

DAViCal

DAViCal is a server for calendar sharing that uses the CalDAV protocol.

Xandikos

Xandikos is a CalDAV/CardDAV server which offers a lightweight and easy-to-deploy solution for syncing calendars and contacts.

CMail

CMail is a secure email client with advanced encryption features.

DBMail

DBMail is a fast and scalable open-source email storage system that supports IMAP and POP3. It is designed for high-volume email systems.

Mailu

Mailu is a self-hosted mail server that is easy to set up and maintain. It provides all the necessary components for a complete mail system, including webmail, calendaring, and contacts.

Poste.io

Poste.io is a complete mail server solution with a modern web interface, spam filter, calendar, and contacts.

Kolab Community

Kolab Community is an open-source groupware solution that includes email, calendar, contacts, tasks, and more.

Microsoft Exchange Server

Microsoft Exchange Server is a popular email and calendaring server software developed by Microsoft.

Roundcube

Roundcube is a browser-based multilingual IMAP client with an application-like user interface.

iRedMail

iRedMail is a full-featured mail server solution that supports email services like SMTP, IMAP, POP3, and webmail.

Zimbra

Zimbra is an enterprise-class email, calendar, and collaboration solution built for the cloud, both public and private.

iMail

iMail is a comprehensive email management software with advanced features.

hMail Server

hMailServer is a free, open source mail server for Microsoft Windows. It supports the common email protocols (IMAP, SMTP, and POP3) and comes with an easy-to-use web interface.

Axigen

Axigen is a mail server software that offers secure and reliable email communication for businesses of all sizes. It provides features such as customizable mailboxes, calendar synchronization, and multi-layered security.

OX Open-Xchange

OX Open-Xchange is a leading provider of open-source email and productivity software solutions.

Kerio Connect

Kerio Connect is a secure and reliable email and messaging solution for small to mid-sized businesses.

SOGo

SOGo is a fully-featured collaboration suite with focus on scalability and simplicity.

OpenChange

OpenChange is an open-source implementation of Microsoft Exchange server protocols. It allows interoperability with Microsoft Exchange servers for email, contacts, calendars, and tasks.

turboSMTP

turboSMTP is a reliable and secure SMTP service that ensures fast delivery of emails. It offers high deliverability rates and advanced features for email marketing and transactional emails.

OBM

OBM is a comprehensive project management software that helps teams collaborate and manage tasks efficiently.

Exim

Exim is a message transfer agent (MTA) developed at the University of Cambridge for use on Unix systems connected to the Internet.

KumoMTA

Bulk Mail VPS

CheFSender

Imitate Email

Forward Email

Mailcatch.app

mailsend-go

Baïkal

Haraka

Kirim Email

qmail

Postfix