A Rightmove enquiry that lands at 11.40pm gets a reply the next morning, around 9.15 if the office is quiet. By then the applicant has sent the same message to three other agents and one of them has already offered a Saturday viewing.
The enquiry itself is easy to answer. It arrives as an email from Rightmove, Zoopla or OnTheMarket with a fixed layout: property reference, name, phone, and a message box that usually says can I view this. Every one of those emails looks the same, which is what lets software read them.
So the system reads it. It pulls the property reference, looks up the listing, and sends a reply from your own Gmail or Outlook address within a minute. The reply thanks them, asks the two things you would ask anyway (when they want to move and whether they are chain free, or for a let, move date and pets), and offers viewing slots taken live from the Google Calendar of the negotiator who covers that postcode.
When the applicant replies with a time, the slot is booked and the negotiator sees it in the diary with the applicant's answers underneath. If they say they still have a flat to sell and the vendor only wants proceedable buyers, the reply is held for a human to look at.
None of this needs a new inbox or a new portal login. The emails still arrive where they always did. The first reply now goes out at 11.41pm, and the applicant has your slot before they have finished typing to the next agent.
We build this on the accounts you already have. Rightmove alerts keep coming to the same address, the diary stays in Google Calendar, and the replies sit in your sent folder like any other. If you want to see what it would have done with last Tuesday's enquiries, forward us ten of them.