Oracle Communications Messaging Server - Oracle Communications Messaging Server is basically an email communication and management system being offered by the Oracle.
Airtable - Airtable works like a spreadsheet but gives you the power of a database to organize anything. Sign up for free.
Eudora Internet Mail Server - Eudora Internet Mail Server is a highly advanced internet mail system that supports the all kind of email systems and clients either it is IMAP, POP3, SMTP and much more.
Microsoft Teams - Microsoft Teams provides the enterprise-level security, compliance and management features you expect from Office 365, including broad support for compliance standards, and eDiscovery and legal hold for channels, chats, and files.
Zimbra - Zimbra is trusted by over 500 million users to increase productivity with a complete set of collaboration tools while maintaining total control over security and privacy.
RingCentral Video - Live life unlimited. Free video meetings and team messaging in one app that works the way you do.