"Or target market are people who are very much productivity seekers, they like to control their email using a native applications that does not distract them when they have to log in and out of the emails. We’re just aiming for people who don’t want to log in using a browser to check their mails every single time."

It seems to be aimed at increasing productivity for users with multiple accounts while remaining usable. I think they're mainly aiming at businesses with this, something like small business sales perhaps.