If you do a lot of email, especially professionally, it's totally worth it, even just for email alone. I feel like a lot of people were using Hey to help them manage their email-heavy workflows (e.g. their focused replying tools to handle a big batch of emails in series) and that's the market here too.

Fully agree it doesn't make sense if you're just sending & receiving a handful of emails a week (but in that case, why look past gmail at all).

For comparison: Superhuman costs $360/year, Spike costs $144/year, Front costs $228/year, etc etc. Some people pay for serious email tools.