Stop losing leads to unread emails. One line of code gives you SMS-ready phone numbers, auto-formatted for any country.
Most waitlist tools only collect emails. When you're ready to send SMS, you're stuck.
How it works
Choose phone or email mode
Paste one line of code
Download Twilio-ready CSV
See it in action
Here's what your visitors see. Try interacting with it.
Features
Reach users where they actually respond. Auto-formatted for Twilio.
Let users share and move up the list. Grow without ad spend.
See exactly where users drop off and what converts.
Download your list as CSV anytime. No lock-in, ever.
Email & Phone
Choose the right mode for your use case — or use both.
| 📧 Email Mode | 📱 Phone Mode | |
|---|---|---|
| Best for | Newsletters, product updates, long-form content | Launch alerts, time-sensitive offers, high-urgency notifications |
| User familiarity | — everyone has an email | Growing — more common in mobile-first markets |
| Open rate | ~20% | |
| Response time | Hours | |
| Signup friction | — quick to type | Medium — requires country code selection |
| Auto-formatting | Standard email validation | — SMS-ready |
Open rate and response time based on industry averages. Individual results may vary.
FAQ
Email is the safe default — it's familiar, low-friction, and works for newsletters, product updates, and nurture sequences. Most users are comfortable sharing their email.
Phone shines when urgency matters — launch day alerts, flash sales, or time-sensitive drops. SMS has dramatically higher open rates (~98%) and faster response times (~90 seconds), but some users may hesitate to share their phone number.
Not sure? Start with email. You can always create a second project in phone mode later.
Yes! Create two projects — one in email mode, one in phone mode — and place both widgets on your site. Each project has its own embed code, dashboard, and export.
E.164 is the international standard for phone numbers (e.g. +14155551234). It's the format required by SMS platforms like Twilio, Plivo, and Amazon SNS. waitlist-kit auto-formats every phone number to E.164 at signup, so your list is ready to use immediately.
Go to your dashboard, click "Export CSV", and you'll get a clean spreadsheet with all signups, referral codes, and timestamps. No limits, no paywalls — your data is always yours.
No. waitlist-kit collects signups and formats them for you. When you're ready to send messages, export your list and use it with your preferred platform — Twilio, Mailchimp, SendGrid, or anything else.
One line of code. Email or phone. Export anytime.
Create your waitlist