Asterisk - An open source telephony switching and private branch exchange service for Linux.

ReliefJet Essentials for Outlook - A large set of useful and easy-to-use tools for every Microsoft Outlook user: Import, export and convert using EML,MSG,TXT and PST formats; remove duplicate items, process attachments and extract addresses; get reports and statistics and even more...

Wazo.io - The UCaaS Platform Built for MSPs​

Import Messages from EML Files - Free and easy way to import messages from EML format files to the specified Outlook folder.

FreeSWITCH - FreeSWITCH is an open-source media application designed to support popular protools such as SIP and WebRTC and provides a platform to develop voice and video applications.

Cloud Email Conversion - Looking for email migration service? Cloud Email Conversion easily turns the bunch of email files into the Outlook PST file preserving the folders structure