Auth0 Token Vault handles secure token storage, exchange, and refresh for external providers so you don't have to build it yourself.
Rolling your own OAuth token storage can be a security liability. Token Vault securely stores access and refresh tokens from federated providers and handles exchange and renewal automatically. Connected accounts, refresh exchange, and privileged worker flows included.
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An open-source cross-platform (Mac/Windows/Linux) email client written in REALbasic, with a user interface inspired by Apple Mail but an enhanced feature set.
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Policy-daemon for the postfix MTA in perl. Scores RBLs, RHSBLs, HELO, Client IP and MAIL FROM argument and sums up a score on which you can reject the mail before DATA will be received. Results are cached. I.e: a weighted SMTP filter before DATA (queue).
From this time on, LibPST will not be maintained here. It will be maintained at http://alioth.debian.org/projects/libpst/. Also, check the version at http://www.five-ten-sg.com/libpst
mail2prowl is used to operate the free service http://mail2prowl.de This script receives mails via POP3, reads a special formed recpeint adress and sends the mail to the Prowl webservice. Prowl is a push enabled iPhone Application with a nice API.
ImapHandler is a fsock-based low-level IMAP client for PHP intended for developers who want less abstraction than provided by the imap extension or PEAR::Mail_IMAP but don't want to have to worry about parsing everything themselves.
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Platemail is a cross-platform email client written in Java, featuring built-in, configurable spam detection and filtering capabilities, the potential for a variety of user interfaces and the option of storing mail in a relational database.
Jack Mail Client: jackmailclient: Mail Client in Java This is a simple mail client uses any mail server with a minimal configuration you will have a robost email client. Purely written in java.
NOTE: dkim-milter has been replaced by OpenDKIM, available at http://opendkim.org/
dkim-milter consists of two parts: A milter-based application (dkim-filter) which plugs in to Sendmail to provide DomainKeys Identified Mail service, and a library (libdkim) which can be used to build DKIM-compliant applications or MTAs.
dkim-connector is a daemon that facilitates the configuration of dkim-milter (especially for multi domain hosting; with postfix and sendmail) and is accessible via webservices (for a simplified adaption of specific admin tools) and a console client
NEXUSe2e client is an Eclipse RCP application that provides XML based messaging using e.g. ebXML to integrate business processes that span multiple companies. It enables small organizations to participate in supply chain integration scenarios.
This project aims to develop an open source client for Novell GroupWise. It uses the Eclipse Rich Client Platform for its user interface. Thus enabling a native looking and feeling and feature rich client for all major platforms.
ThunderRetract implements client-side eMail retraction into Thunderbird. This is done showing messages differences in original and retracted one. Support: thunderretract@gmail.com
A system for filtering messages from your IMAP inbox on-demand. Filters are defined in an XML file. Matching messages can be moved, copied, or deleted. This is all independant of your choice of email client, as long as you use IMAP.
...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!
gammamail is a lightweight Gmail client. It is for those who like the simplicity of Gmail, but want better accesibility. Focus is on providing super quick reading and sending of emails without saving anything that you haven't explicitly chosen to.
AtMail is an open source webmail client written in PHP. We aim to provide a elegant Ajax webmail client for existing IMAP mailservers, with less bloat and a focus on an intuitive, simple user interface.
A webmail-client (POP3, IMAP, SMTP) written in Java as a webapp. Very easy to install - just throw the WAR-file into the deployment-directory of your Servlet-container (tomcat, jetty, weblogic, ..) and you're ready! Test ride on the yawebmail-Homepage!
Blue HttpMail is a library that connects to HTTPMail servers (such as hotmail.com) and a proxy that allows POP3, IMAP and SMTP access to those servers. Blue HttpMail is being developed using the open source library Blue http://bluelib.sourceforge.net
A fast, client-server design for greylisting service. Initially intended for Postfix based e-mail servers, includes country identification and other tuning parameters.
ISPMan is a system to design massive ISPs using LDAP as the backend.
ISPMan provides a web front end and a command line interface to create virtual domains and manages users, dns information, email infos and httpd setup data for these vhosts.