Calendly email verification
Verify booker emails to cut no-shows
A meeting booked with a fake or mistyped email is a no-show waiting to happen — the reminder never arrives. Connect Calendly's invitee webhook to Verifly and confirm every booker's address is real before your reminder and confirmation emails go out.
curl -X GET "https://verifly.email/api/v1/verify?email=invitee@example.com" \
-H "Authorization: Bearer vf_your_api_key"Real-time SMTP mailbox checks
Single, batch, and async bulk verification
Disposable, role account, and catch-all detection
Pay-as-you-go credits with no subscription lock-in
Search fit
Built for Calendly booker email verification
Use Verifly when you need a simple API, predictable pricing, and clean JSON results before emails hit your product, CRM, or campaign tool.
How bad booking emails turn into no-shows
Calendly's whole value is that reminders and confirmations reach the invitee automatically. That model quietly breaks when the email a booker enters is wrong. If someone fat-fingers their address, or drops a throwaway inbox to grab a free strategy call, every reminder Calendly sends bounces into the void — and the invitee simply forgets the meeting. You count it as a no-show without realizing the reminder never landed.
For sales teams and consultants running paid or high-intent calls, this is expensive. A rep blocks 30 minutes, prepares, and waits for someone who can't be reminded and often never intended to show. At volume, undeliverable booking emails also dent the reputation of whatever domain sends your reminders.
Verifly gives you a live check on the invitee's email at the moment of booking. It confirms the mailbox exists, flags disposable and role addresses, and lets you trigger a "please confirm your email" step or reassign the slot before the calendar fills with ghosts.
Verify Calendly bookings via the invitee webhook
- In Calendly, go to Integrations → Webhooks (or use the API) and subscribe to the invitee.created event, pointing it at your serverless endpoint.
- Register for a free Verifly key at verifly.email/api/v1/autonomous/register — 100 credits, no card, no captcha.
- In the endpoint, read payload.invitee.email from the Calendly event and pass it to Verifly's verify endpoint.
- If the email is deliverable, let the standard reminders run. If it's undeliverable or disposable, flag the booking, send a manual confirmation, or free the slot.
export default async function handler(req, res) {
const email = req.body.payload?.invitee?.email
const vf = await fetch(
`https://verifly.email/api/v1/verify?email=${encodeURIComponent(email)}`,
{ headers: { Authorization: 'Bearer vf_your_api_key' } }
)
const { result } = await vf.json()
if (result !== 'deliverable') {
// flag the booking as unconfirmed / high no-show risk
}
res.status(200).json({ ok: true })
}FAQ
Frequently asked questions
How does verifying emails reduce Calendly no-shows?
No-shows often happen because the invitee never received the reminder — the email was mistyped or fake. Verifying the address at booking time tells you when reminders won't be deliverable, so you can confirm the contact another way instead of silently losing the meeting.
When should the verification run?
On Calendly's invitee.created event. That fires the instant a slot is booked, which gives you a window to verify the email before the first confirmation and reminder are sent.
Can I stop someone from booking with a fake email?
Calendly completes the booking before the webhook fires, so you verify just after. The practical move is to flag or cancel bookings that come back undeliverable, and to challenge disposable addresses with a confirmation step.
Why do free consult slots attract disposable emails?
People grabbing a free call sometimes use throwaway inboxes to avoid follow-up. Verifly's disposable flag surfaces these, so you can prioritize real prospects and stop your calendar from filling with tire-kickers.
Does this work with Calendly's paid and team plans?
Yes. As long as you can subscribe to the invitee webhook or poll the Calendly API for new bookings, the verification step is identical regardless of plan tier.
What does Calendly email verification cost?
Verifly bills pay-as-you-go from $2 per 1,000 checks down to $0.60 per 1,000, with 100 free credits and no subscription. You verify one email per booking, so the cost scales with meetings booked.