Verify every email at the moment of capture
Stop bad addresses at the door. The SpamCipher Real-Time Validation API checks a single address the instant someone types it, on your signup form, checkout, or CRM, and returns a clear verdict in milliseconds. One simple REST call, and the bad ones never reach your list.
Get your API key
One call on submit, an instant verdict back
Catching a bad address after it is already in your database is too late. The API verifies each address at the point of entry and hands your code a decision before the form even closes.
- Get your API key. Sign up, grab your key from the dashboard, and you are ready to make your first call.
- Call the API on submit. Send the address with one REST request as the form submits, with no test email ever sent.
- Act on the verdict. Accept the good ones, block the bad ones, and suggest a fix when there is a likely typo.
- Format and syntax: catches typos and malformed input
- Mailbox existence: confirms the inbox can receive mail
- Disposable addresses: spots burner and throwaway domains
- Role accounts: flags info@ and sales@ style inboxes
- Typo detection: returns a suggested correction
From a raw input to a trusted address
Wire it in once, and every new contact is checked before it lands.
Get your API key
Create an account, copy your key, and you can make a verified call in minutes with the language you already use.
Call on submit
Send the address with a single REST request as the form submits. The API responds in milliseconds with no test email sent.
Act on the verdict
Accept valid addresses, block invalid or disposable ones, and show your typo suggestion so the user can fix it on the spot.
Keep bad addresses out from the start
Get your API key and run your first live checks free, no credit card required.
The live counterpart to bulk list cleaning
Bulk validation cleans the list you already have. The API keeps it clean from then on, by verifying each new address the moment someone enters it, so the same junk never builds back up.
Pair the two and your list stays healthy on both ends: a one-time scrub of what exists today, and a live gate on everything that arrives tomorrow.
A developer experience you will actually enjoy
Start with a single REST endpoint and a JSON response, or reach for an SDK in the language you already work in, so you write less glue and ship faster.
Drop the JavaScript widget straight onto a signup form for validation with no backend code, and subscribe to webhooks if you would rather handle verdicts asynchronously.
Clear rate limits, predictable status codes, and verbose error messages keep your integration honest, so you always know exactly what happened on every call.
Read the API docsHow to get the most from real-time validation
Treat the verdict as a decision, not just a label. Accept the valid, block the disposable, and when a typo suggestion comes back, show it inline so the user corrects their own address before they ever leave the form.
Be thoughtful with the gray areas. Catch-all and role accounts are not always wrong, so let them through with a flag rather than a hard block, and you keep real customers while still keeping the obvious junk out of your list.
