email security
11 vendors in this category
Barracuda
barracuda.com
Cisco Email Security
https://www.cisco.com/site/us/en/products/security/secure-email/index.html
Cloudflare Email Security
https://www.cloudflare.com/zero-trust/products/email-security/
Mimecast
mimecast.com
OpenText CyberSecurity
appriver.com
Paubox
paubox.com
Proofpoint Email Security
proofpoint.com
Protonmail
proton.me
TitanHQ Email Security
spamtitan.com
Trend Micro Email Security
https://www.trendmicro.com/en_us/business/products.html
Virtru
virtru.com