Microsoft

Crawford said Microsoft is a good one to keep an eye on based on its existing investments in security and also the relevance of email security to its overall security strategy.

Microsoft is also listed as a leader on the Q2 2021 Forrester Wave for Email Security.

“The biggest change in the competitive landscape is the increasing footprint that the large enterprise email players – Microsoft and Google – have in the space,” Blankenship said. “Microsoft, in particular, is adding to its email security capabilities.”