Meet the new undisputed email leader:

Message Systems Acquires Port25

Now serving businesses of all sizes, in the cloud and on-prem

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20% of the world’s legitimate email is sent through Message Systems software,

by many of our great customers:

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The #1 Email Infrastructure Provider. Period.

Cloud and on-premise solutions for unlimited power to scale your business.


Easily connect apps and data through APIs


Drive engagement with real-time insight

Cross Channel

Enable mobile push and text on a single platform