You probably would like to check https://smartbnb.io/messaging.
We work on Airbnb, with native messages (not emails as Airbnb’s treatment of email is unreliable), with automated messages from inquiry to reviews, including reviews automation, with automatic emails to cleaners (or clients, or anyone really) when you have a new reservation, or a cancellation, and send reminders. We also monitor your listing’s placement in search results and we certainly want to keep innovating.
Guesty would take 3% of your payouts, we would take €31. Your choice
Full disclosure: yes, I am the founder of Smartbnb in very bad disguise. How could one possibly guess?