Some of our users don't want to interact with their BRM.  They might only do perhaps 1-2 demo's or rentals per day, or only have 5 rental bikes, so instead, they want a very lightweight system to receive notifications about rentals, and the status of each reservation.  (on a simple mobile app for example)

For this reason, we have been developing an integration with Slack.  

Slack is a powerful system (mobile and desktop) who's mission is to replace email.  Most importantly it will always have a FREE tier.

See Also

setting up your slack integration