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MongoDB Atlas runs apps anywhere
Deploy in 115+ regions with the modern database for every enterprise.
MongoDB Atlas gives you the freedom to build and run modern applications anywhere—across AWS, Azure, and Google Cloud. With global availability in over 115 regions, Atlas lets you deploy close to your users, meet compliance needs, and scale with confidence across any geography.
Highly scalable/configurable Messaging Platform allowing users in a domain to be distributed on multiple hosts, has multiple queues. Provides virtual domains/users in MySQL. Modern MSP class qmail replacement with ESMTP, POP3/IMAP, QMTP, QMQP support
Hedwig is an open source IMAP, SMTP, POP3 server written in Java, designed with ease of installation and configuration in mind. Hedwig enables storage of mail message headers in a relational database(MySQL or Oracle) and mail messages in a file system.
Visit http://hwmail.sourceforge.net/ for more information.
An unofficial web console to administer Apache James 3 server
MOVED TO: https://github.com/fulvio999/jamesui
Jamesui is an unofficial web interface to manage and monitor Apache James 3 mail server.
It is written in Java and run inside Apache Tomcat.
Ciphermail email encryption gateway (S/MIME, OpenPGP, PDF encryption)
is a standards based centrally managed email server (MTA) that encrypts and decrypts your incoming and outgoing email at the gateway level. Ciphermail Email Encryption Gateway is compatible with any existing email infrastructure like Microsoft Exchange and Lotus Notes and has support for S/MIME, OpenPGP and PDF encryption.
Ciphermail Email Encryption Gateway has a built-in CA which can be used to issue X.509 certificates for internal and external users.
For additional security, keys...
Tools for a mail delivery service, including LMTP and POP3 servers and also getpwnam() emulation. Mail is stored in Maildir++ format (qmail plus courier extensions as soft quota and subfolders). User defined filter and virtual domains are supported.
Jamm (Java Mail Manager) is a web application to manage virtual email account information stored in an LDAP directory. It is meant as an administration tool for sites using mail servers, such as Postfix and Courier-IMAP.
acSMTP is a SMTP/POP3/IMAP mail server
for Win32. May serve MX hosts and
in-LAN mail. Black/white lists for IPs/Emails,
RBL spam blocks,
DNS Email validation, optional DBMS backend for lists
and rules, custom user authorization, AntiVirus API.
Unlimited organizations, 3 enterprise SSO connections, role-based access control, and pro MFA included. Dev and prod tenants out of the box.
Auth0's B2B Essentials plan gives you everything you need to ship secure multi-tenant apps. Unlimited orgs, enterprise SSO, RBAC, audit log streaming, and higher auth and API limits included. Add on M2M tokens, enterprise MFA, or additional SSO connections as you scale.
Implements a simple SMTP daemon that accepts any mail from any sender to any recipient (spam trap). All delivery attempts will be rejected but the mails can be processed anyhow. Can be extended with modules which do the processing of received mails.
Exim4-LDAP is a set of configuration to Debian's Exim4 to get all user account information from an LDAP database. It reuse the well-known qmail.schema from Qmail-LDAP. It can also integrate with Samba-LDAP for comprehensive SMB domain management.
MailArchiva is a powerful, full featured email archiving (email archiver) and compliance solution for mail systems such as Microsoft Exchange. It stores all incoming, outgoing and internal emails for long term storage. A web based user interface is avail
A BASH function library of neat stuff for dealing with electronic mail. The library provides support for unencrypted and TLS encrypted relaying of email with attachments, special mailing list filtering and From address spoofing.
YPOPs! is an application which emulates a POP3/SMTP mail server and provides free POP3 and SMTP access to Yahoo! Mail. It does not depend on Yahoo's POP3/SMTP mail server. You can use a mail client of your choice!
userb emails usera - usera does not have userb on their whitelist.
Userb's email is not delivered, instead userb gets a mail asking if they wish to appear on usera's list? if yes usera gets asked same thing if yes all old/new mails get delivered
Delphi / FPC SMTP / POP3 Mail Server. High volume, customizable E-mail, for Win32, small footprint, secure, simple and fast with Web-based admin. See Documentation for more.
Server to read, process and send eMails used to apply business-rules on eMail traffic. Starting with rewriting mime headers up to do complex calculations is every possible using the build-in plug-in technology.
This is an email server written in C#. The server handles protocol, and a plugin architecture allows developers to create their own authentication/mail storage system, making this one of the most scalable email servers in the world. 2 plugins included.
dkfd is a DomainKeys filter daemon using libdomainkeys library. targeted usage is SMTP proxy of Postfix MTA. Currently developing under Linux/FreeBSD, and Solaris.