Fill Cancellations in Minutes, Not Days
Your clients want another session this week. With virtual therapy, they can claim a last-minute opening without rearranging their day. One filled session pays for a year of SlotFill.
The Cost of Empty Slots
Everything you need to fill last-minute openings
Simple, fast, and designed specifically for therapists
Instant Broadcast
Send SMS to your entire waitlist in seconds when a slot opens up
Never lose revenue to last-minute cancellations
First-Claim Wins
Fair system where the quickest responder gets the appointment
Fair and transparent for your clients
Simple for Clients
One-tap claim link. No apps to download, no accounts to create
Higher response rates with zero friction
How It Works
Three simple steps to fill your cancelled appointments
Client Cancels
Create an opening in 30 seconds
Broadcast
SMS sent to your waitlist instantly
Slot Filled
First to tap claims it
Built with Privacy in Mind
Your client data stays secure. Period.
Encrypted Data
All data encrypted in transit (TLS 1.3) and at rest (AES-256)
HIPAA-Conscious
We store only scheduling data, never clinical notes or PHI
US-Based Servers
Data hosted on secure US infrastructure with SOC 2 compliance
Data Ownership
Export or delete your data anytime. Your client list is yours
Sound Familiar?
These are the problems SlotFill solves
"I spend 30 minutes calling down my waitlist"
Manual phone tag is exhausting. By the time you reach someone, the slot is gone.
"Clients want to come this week, not next month"
Your waitlist clients are motivated. They just need to know when something opens.
"Every empty slot costs me $150-200"
Last-minute cancellations aren't just inconvenient—they're expensive.
Simple, Transparent Pricing
Start free, upgrade when you need more
Free
Perfect for getting started
- 10 SMS per month
- 1 waitlist
- Up to 25 clients
- First-claim system
- Email support
Starter
For growing practices
- 250 SMS per month
- Unlimited waitlists
- Unlimited clients
- First-claim system
- Email support
Pro
For busy practices
- 1,000 SMS per month
- Unlimited waitlists
- Unlimited clients
- Analytics dashboard
- Priority support
Team
For group practices
- 2,500 SMS per month
- Up to 5 providers
- Shared waitlists
- Team analytics
- Dedicated support
Frequently Asked Questions
Everything you need to know about SlotFill
When you broadcast an opening, all clients on your waitlist receive an SMS simultaneously with a unique claim link. The first person to tap the link and confirm claims the slot. Everyone else sees a 'slot already claimed' message. It's fair, fast, and transparent.
No! That's one of the best parts. Clients receive a simple SMS with a link. They tap it, see the appointment details, and tap again to confirm. It works in any mobile browser - no app downloads, no account creation, no passwords to remember.
Absolutely. We use industry-standard encryption for all data in transit and at rest. We don't store session notes or clinical information, only the minimum contact info needed for scheduling. Your client list stays yours.
You have two options: add clients manually through your dashboard, or share your unique waitlist join link. Clients can add themselves via that link - they just enter their name and phone number. You can review and manage all waitlist members anytime.
Ready to stop losing revenue to cancellations?
Try SlotFill free. No credit card required.
No credit card required · 10 free SMS/month · Cancel anytime