Syntax validation
Reject malformed addresses before running the domain checks.
API service
Check email and domain signals before accepting an address
Email Validation checks address syntax and returns domain-level signals that help you decide how an email should enter your workflow.
GET /services/email-validationHow it works
Practical validation without overstating the result
When the format is valid, Stopbot separates the user and domain, checks whether the domain is disposable, and returns MX, SPF, and DMARC results. Invalid syntax returns isEmail: false.
This service does not perform mailbox-level verification and does not guarantee that a specific inbox exists or will accept a message.
Response fields
GET /services/email-validationisEmailShows whether the submitted address has a valid email formatisDisposableEmailShows whether the domain is listed as disposablemxMail exchange lookup result for the domainspfSPF lookup result for the domaindmarcDMARC lookup result for the domainIntegration examples
Validate an email from your stack
Submit an address and read its syntax result, disposable-domain signal, and available MX, SPF, and DMARC information.
Replace the example address, validate the HTTP status, and treat DNS and disposable-domain fields separately from email syntax. Read the complete Email Validation documentation.
Core capabilities
What Email Validation provides
Disposable-domain signal
Reports whether the submitted domain appears in the disposable email dataset.
Mail routing signal
Returns the MX lookup result used to understand whether the domain publishes mail routing information.
Domain policy signals
Returns SPF and DMARC lookup results for the submitted email domain.
Use cases
Where Email Validation fits
Registration forms
Screen malformed or disposable addresses before creating an account.
Lead collection
Add domain-level validation signals before storing a submitted lead.
Data hygiene
Separate obviously invalid input from addresses that require your normal confirmation workflow.
Start using Email Validation
Create an account, configure the service in the Stopbot panel, and follow the integration documentation for your application.