EmailRep

EmailRep is an email reputation and intelligence service operated by Sublime Security, Inc. It helps users understand the online history and potential risk associated with an email address by assessing hundreds of factors, including domain age, deliverability, social and professional profiles, public records, data breaches, credential leaks, phishing activity, and threat associations. Its results can indicate whether an address appears suspicious, disposable, trustworthy, or suitable for delivery, while also providing supporting details such as domain reputation and email security signals.

EmailRep offers an API for querying email addresses and integrating reputation data into other workflows. The service supports defensive applications such as detecting targeted phishing, reducing fraud, identifying throwaway accounts, and deciding when additional signup verification may be appropriate. Marketing and sales teams can use it to validate addresses, assess catch-all domains, enrich leads, and help protect sender reputation. EmailRep also provides documentation, API key access, contact options, and frequently asked questions.