Free trial versus freemium. If you have a larger base (free tier), even if a small percentage upgrade to paid, then you may make more money. It's what Dropbox and Slack do.
(I work at Nylas.)
(I work at Nylas.)
> We already sync several hundred terabytes of data for our users and are adding tens of thousands of new users each month. It’s costing us real dollars.
This is now changed with the new architecture in Nylas Mail.