WhatsApp is now where many buyers, sellers, landlords and tenants prefer to talk to their agent. The question for most UK agencies in 2026 is no longer whether to use WhatsApp, but which platform to run it on so it works across every branch, links to the CRM and stays compliant.
This guide sets out the criteria that matter, a shortlist of the main options and the questions to ask in demos. We are Stitch, so we have included ourselves, and we have tried to be fair to everyone else. If you want to see how Stitch works with your CRM, book a demo.
The best platform for an agency is the one that fits how negotiators, lettings teams and property managers already work. Five criteria matter most.
Speed decides who wins the instruction. In our 2026 estate agent response time study we mystery-shopped 154 enquiries. Sellers waited around five hours for a reply and buyers around 90 minutes. An agency that replies on WhatsApp within minutes is starting the conversation while competitors are still unread.
Stitch is a UK WhatsApp Business Platform provider and Meta Business Partner. Its msgboxx team inbox runs on the official Cloud API as a web app, Chrome extension and mobile app, and connects to Reapit, Alto, Rex, Street, Jupix and AgentOS. Agencies use it for portal lead automation, AI persona bots, landlord and applicant broadcasts, and multi-branch management. It suits agencies that want WhatsApp run as a company channel.
SalesRook is a London PropTech company founded in 2022 that focuses on AI handling of WhatsApp enquiries for estate agents and mortgage brokers, with a Reapit integration. It suits agencies that mainly want an AI layer answering portal and out-of-hours leads. See our Stitch vs SalesRook comparison.
Nesti is a London AI company whose Nesti.Chat assistant handles enquiries, qualifies leads and books viewings, with integrations listed for Alto and Street. It suits agencies looking for an AI receptionist.
Platforms such as respond.io, Trengo and Wati offer WhatsApp team inboxes for any industry. They are capable tools, though property CRM integration usually needs extra work through Zapier, an API or a developer. Our review of whether Wati is worth the cost for a small business covers one of them.
Once the basics are in place, a few features make a large difference to agencies:
Every platform charges its own subscription, and Meta charges for messages on top. From 1 October 2026, Meta charges service messages beyond 1,000 free per phone number each month, as well as utility templates sent inside the 24-hour window. Ask each provider how Meta fees are passed through and whether there are per-seat charges, because a branch network can need dozens of users.
For an agency with several branches and a property CRM, the deciding factors are CRM integration and a business-owned shared inbox. That is what Stitch is built around. Book a demo and we will run it on your own CRM.
