The ability to have all messages encrypted with AES 256 bit ciphers! This means we can send emails from our customers without worry about them being read by third parties or even ourselves at some point down the road.The customer support team are also very helpful if you need help setting up your account or anything else related to it.
Nothing really I dislike but would like more features added such as an auto responder system so when people reply they get automatically emailed back their response rather than having to manually do this themselves each time. We use these services daily to communicate internally within the business and externally to clients/customers who require us to encrypt any communication between us via e mail etc.