Into Lettie from Arthur
As Arthur changes
- Properties and units, each unit its own property in Lettie
- Tenancies and tenants
- Existing addresses linked, not duplicated
From WhatsApp
to Arthur
Lettie integrates with Arthur Online. Lettie's AI answers tenants on WhatsApp and sets the urgency, then chases the contractor and books the visit, at the stages you hand it. Repairs that need your team appear in Arthur as linked tasks or work orders, updated as the repair moves. CRM sync comes with the agency plan.
- Units and tenancies stay current as Arthur changes.
Lettie synced your Arthur portfolio at 10:00
What moves between
Arthur and Lettie
Lettie runs the repair stages you hand it. When a repair needs your team, Arthur gets the linked task, work order or both that you choose, with progress updates.
Back to Arthur from Lettie
Every five minutes
- A task, a work order, or both, linked
- Updates, notes and tags as the repair moves
Photos and quotes stay on the Lettie report, linked from the task or work order.
Connecting Arthur,
step by step
An owner or admin connects Arthur once, from Lettie's Integrations settings. We can do it with you.
In Arthur
Create an OAuth application
Note its Client ID and secret, and the Entity ID in the orange notice.
In Lettie
Enter them and approve
Choose Connect Arthur, enter the Client ID, secret and Entity ID, and approve access in Arthur.
In Lettie
Choose where repairs go
Preview the import, then pick a task, a work order or both.
In Arthur
Add Lettie's webhook and sync
Paste Lettie's receiver address into Arthur's Webhooks page and select the recommended events. Then press Start initial sync in Lettie.
Scan to try the demo
Report a broken boiler yourself
Scan or tap, send "My boiler's broken", and get the reply your tenants would.
Try it on WhatsAppWe only use your number to reply to you.
Arthur Online questions
Does Lettie integrate with Arthur Online?
Yes. An owner or admin connects Arthur once, with an Arthur OAuth application. Each Arthur unit becomes its own property in Lettie, changes arrive as they happen, and Lettie sends repairs that need your team to Arthur every five minutes, as a linked task, work order or both.
CRM sync comes with Lettie's agency plan, from £40 a month, priced on your properties and team seats. Estimate your agency price.
Arthur already has work orders. What does Lettie add?
Lettie takes the tenant's WhatsApp report, sets the urgency and talks the tenant through simple fixes in the chat, such as topping up the boiler pressure. For the rest, it chases the contractor, books the visit and gets the landlord's sign-off, at the stages you hand it.
50% of repair cases are first reported outside 9am to 5pm, Monday to Friday (Lettie data, Jun–Aug 2026). Lettie replies at any hour, with a median first reply of 26 seconds (Lettie platform data, Aug 2026).
When a repair needs your team, Arthur gets the task or work order, linked to the Lettie report with the photos and quotes.
How quickly do Arthur changes reach Lettie?
As they happen. Arthur sends changes to Lettie through webhooks, and an optional daily check catches anything missed.
How do units appear in Lettie?
Each Arthur unit becomes its own property in Lettie, so a tenant's report lands on their unit. Lettie files the task or work order on that unit in Arthur, or on its tenancy when the unit has one current tenancy.
Will Lettie message tenants when we connect?
No. Importing tenants from Arthur sends no welcome message. Put your WhatsApp number's QR code in tenancy packs, or its link in your emails, and tenants start the chat themselves.
Run Arthur repairs
with Lettie
Estimate your agency price for your portfolio and team, then we'll connect Arthur with you.