Email was invented almost 40 years ago. It isn’t conducive to modern day use-cases, especially in the workplace. At the heart of all the problems is a lack of structure & context in email — constant copying & pasting, lack of interoperability with other applications. We have a better way. Mainframe is the workspace for getting things done. It enables purposeful, structured collaboration while maintaining tight integration with legacy email. It’s the first application you open and the last application you close. Similar to the mainframes of old, the modern day Mainframe is where all the most important information passes through. It’s the connective tissue of the workplace. It’s reliable, secure and essential to productivity.
London, GB

Mainframe Locations

London, GB

Mainframe Metrics

Mainframe Summary

Founding Date


Total Funding

$300 K

Latest funding size

$200 K

Time since last funding

almost 2 years


Kima Ventures, Andy McLoughlin, Marc Bell Ventures, Neon Adventures, Seed Equity Ventures, Evan Cheng, Right Side Capital Management, Force Over Mass Capital

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