A human email assistant is superior to an email AI assistant in almost every regard as of this writing, including cost, natural language comprehension and capability.
As of 2019, the AI or artificial intelligence that you read about is nothing close to true Artificial General Intelligence (AGI). In fact, the email AI software that you’ll see promoted is weak or narrow AI at best, essentially an artificial intelligence that is focused on one narrow task.
The email AI assistants you see being marketed today are mostly focused on scheduling meetings, sorting email based on importance, creating task lists based on an email’s contents and filtering your inbox.
Even the most complex of these email AI assistants require a substantial amount of human management, including the creation of rules for the programs to follow. Furthermore, pricing is almost never discussed by any of these software companies, and the few that do provide pricing will easily quote you several hundred dollars per user per month.
Sure, some of these email AI systems will become smarter as you use it and provide feedback and data, but remember that you would be tied to the software developer through a monthly pricing plan. They could raise prices and you’d be stuck, because if you decide to pull the plug all of the training of the AI you’ve done will be a sunk cost. So be very careful about handing over your data and signing up for a monthly subscription to something like this!