Stop fake and mistyped sign-ups at the source
Add one API call to your sign-up flow. Get back a category, a plain reason and a typo suggestion you can show the user.
- Six checks on every address
- A plain reason with every result
- Slow servers never cost a second credit
- 200 free credits, no card
The problem
Why bad addresses cost you
What goes wrong when a list is not verified.
Fake sign-ups inflate metrics
Throwaway inboxes make activation and trial numbers look better than they are.
Typos lose real users
A mistyped email means a user who never gets the welcome email.
Bounces hurt product email
Onboarding and sign-in emails start landing in spam.
How it works
How SimpleCold fits in
Three steps, using the tools you already have.
- 01
Call the API on sign-up
Send the address to the single endpoint from your server.
- 02
Use the category
Accept, warn or block based on the result.
- 03
Show the suggestion
Display the fix when there is a typo.
What you get
What changes for your team
Every address comes back with a result and the reason behind it.
Simple REST API
Single, batch and bulk endpoints with the same response fields.
Typo suggestions
A suggestion field you can show directly under the input.
Throwaway inboxes blocked
Stop disposable sign-ups before they become accounts.
Bulk jobs for big files
Upload a CSV, poll the job status and download the results as CSV or JSON.
For developers
Stop bad addresses at sign-up with one request
Send an address, get back the category, the reason and a typo suggestion you can show the user.
Real-time checks
One address, answered in seconds. Built for sign-up forms and lead capture.
DocsSmall lists
Send a list in one request. Slow servers come back as processing and finish on their own.
DocsBig files
Upload a CSV, check the job's status and download the results when it finishes.
DocsFAQ
SaaS and developers questions
Short answers for teams like yours.
Still have a question? Talk to us.
Check your list before you send it
Start with 200 free credits. Pay per credit after that.