Rentals United is best known as a distribution channel manager, but it now also offers native Messaging Automation — so there are two ways to deliver your Best Guest registration link, plus iCal import.

  • Automated messages — Rentals United Messaging Automation sends scheduled template messages, or you trigger registration from your connected PMS.
  • iCal sync — Best Guest imports the reservations.

Estimated setup time: 5–10 minutes.

Before you start

  • An active Rentals United account with connected listings
  • A Best Guest account
  • Your Best Guest registration link, e.g.
https://app.bestguestapp.com/l/your-listing?channel=rentalsunited

(Use your real link. ?channel=rentalsunited records the reservation origin.)

Using the right link: every listing — each apartment, room, tent, RV, or whatever counts as your smallest bookable unit — has its own unique registration link. If you manage more than one listing, double-check you’re copying the correct one. Find all your links in Best Guest under Properties → [property] → Listings → Copy listing link, or grab them during the Listings step of onboarding.

Path 1a — Rentals United Messaging Automation

Rentals United’s Guest Communication includes template messages scheduled across the guest journey (on booking, before arrival, during the stay, after checkout) with dynamic variables.

  1. Open Guest Communication → Messaging Automation.
  2. Create a template named “Best Guest Registration”.
  3. Schedule it before arrival (e.g. 2 days), insert the guest-name variable, and add your link.
Hello (guest name),

Before arrival, please complete your online guest registration:
https://app.bestguestapp.com/l/your-listing

It takes under 2 minutes. We look forward to welcoming you.

Path 1b — Trigger from your PMS instead

If you run Rentals United purely for distribution into a PMS (Guesty, Hostaway, Lodgify, Cloudbeds…), configure the registration message in that PMS’s automation engine instead — it’s the system that owns guest communication in that setup. See all integrations for the per-PMS guide.

Whichever layer you choose, pick one primary messaging layer to avoid sending guests duplicate requests.

Best Guest automatically reminds the main guest if they started registration but haven’t finished it. If a guest never opens the form at all, though, that reminder can’t reach them — so it’s worth scheduling a second Messaging Automation template, timed 1 day after arrival instead of before it, using only the link:

Hello (guest name),

Everything alright? Did you fill out all your forms and is the data correct?
Please follow this link if you still need to add/change some information:
https://app.bestguestapp.com/l/your-listing

Path 2 — iCal sync

To import reservations into Best Guest’s Reservation Verification, copy the property’s iCal / calendar export link (from Rentals United or your connected PMS) and paste it into Best Guest. Make sure guest email is being passed through the OTA → Rentals United → PMS chain if you rely on email delivery.

  • Reservation confirmed → confirmation only
  • 2–3 days before arrival → registration link
  • Arrival day → access instructions
  • 1 day after arrival → reminder for guests who haven’t completed registration
  • Departure day → checkout message

Troubleshooting

No message received — confirm which layer owns messaging (Rentals United vs PMS) and that only one is active.

Missing guest email — fall back to OTA-inbox messaging or PMS notification rules.

Reservation missing in Best Guest — verify the URL and ?channel=rentalsunited.

Next steps