Actually no - that idea isn't on the roadmap. It's definitely an interesting idea which I'll submit. To make that more abstract, it should be multiple emails that can be sent at certain intervals with custom bodies.
What do we have, currently, is the ability to change the booking confirmation email that goes out so that you can add custom paragraphs onto the end.
For instance, a lot of owners put custom paragraphs for things like:
- Informal directions (if the standard address and mapping sites on the confirmation email might be wrong)
- Check-in and Check-out policy
- House access code for the lockbox
- Specific reminders about the area (fishing licenses, etc)
You can find the custom paragraph stuff in your property area under the Email Settings tab.