Integrations
Whistle fits the tools your firm already runs on: your calendar, your practice management system, your e-signature and payment providers. Leads arrive where your team works, with a signed audit trail.
Calendars and booking
Whistle books directly into your own calendar. No scheduling middleman, no extra sub-processor.
Google Workspace Calendar
LiveDirect booking into fee earners' calendars, with working hours, buffers and per-category routing.
Microsoft 365 / Outlook
LiveSame direct integration for Microsoft firms, authorised firm-side with admin consent.
Practice management and CRM
Qualified leads land in the system your team already works in.
Clio Grow
LiveEvery completed lead pushed into your Clio Grow Lead Inbox, with enquiry, priority, answers and source. EU region supported.
Leap
Coming soonNative connector on the roadmap. Available today via webhooks and Zapier.
Actionstep
Coming soonNative connector on the roadmap. Available today via webhooks and Zapier.
HubSpot, Pipedrive and others
Via Zapier / MakeAny CRM that Zapier or Make can reach, fed by Whistle's signed webhooks.
Automation and webhooks
Every completed lead and booking fires a signed event your systems can act on.
Zapier
LiveTrigger zaps from lead.completed, lead.qualified and booking.created events.
Make (Integromat)
LiveThe same events, in Make scenarios.
Custom webhooks
LiveHMAC-SHA256 signed payloads to your own endpoint, with retries and an audit trail.
E-signature and engagement letters
Send the engagement letter the moment a lead qualifies.
Docusign
Via Zapier / MakeTriggered from the lead.qualified event via Zapier or Make, mapped to your template.
Dropbox Sign
Via Zapier / MakeSame recipe, different provider. Or use the e-sign built into your practice management system.
Payments
Collect the retainer at intake. Card details never touch Whistle, so there is nothing new to secure.
Stripe Payment Links
LiveYour own hosted payment page shown in the widget after booking or qualification.
LawPay and hosted payment pages
LiveAny hosted payment page works the same way, keeping client-account rules entirely on your side.
Messaging and phone
The same AI intake, on the channels your clients actually use.
SMS confirmations and reminders
Add-onBooking confirmations and reminders by text, via Bird (EU). Consent-gated.
Two-way SMS intake
Add-onVisitors text your number and the AI qualifies them in the thread, then arranges a callback.
Missed-call-to-text
Add-onUnanswered calls get an instant AI text, so a missed call becomes a qualified lead instead of a lost one.
Aura voice agent
Early accessYour calls answered by AI, on the same GDPR-first engine. Join the pilot.
WhatsApp intake
Coming soonOn the roadmap, reusing the same conversation engine.
Built in, not bolted on.
Lead alerts and digests
LiveInstant lead alerts, weekly digests and follow-up emails from your Whistle deployment, sent via Google Workspace.
Need something we have not listed?
The signed-webhook layer reaches almost anything, and native connectors are prioritised by client demand. Tell us what your firm runs on and we will map the route during onboarding.