Disposable Email Domains list to detect temporary and fake email addresses

Frequently asked questions

What is a disposable email domain?

A disposable email domain refers to the root domain name used by a disposable email address (DEA). In the disposable email address example@zevars[.]com, for example, the disposable email domain is zevars[.]com.

Are there other terms used for disposable emails?

A disposable email is also known as a “throwaway email address,” “fake email address,” “temporary email address,” “burner email address,” “single-use email address,” “use-and-throw email address,” and “one-off email address.”

What can disposable email domains be created for?

Disposable email domains can serve various purposes. Disposable email addresses can be used by those who want to protect their privacy or to avoid receiving spam or unsolicited messages in their official mailboxes.

Disposable email domains may also be used for repeated registrations to a service, possibly leading to freemium abuse, and are sometimes found to be used in spam and phishing.

Who can use disposable email domains lists?

A list of disposable email domains is handy for SaaS business owners and website administrators who want to ensure that users only sign up to their services with their official email address. By doing so, they increase their chances of converting users.

Cybersecurity teams can use a list of disposable email domains to weed out and block possible malicious emails.

A disposable email domains list can also help marketing professionals clean their contact lists to improve vital marketing metrics.

How often do you update your list of disposable email domains?

Our disposable email domains database is updated every day. We keep an eye out on more than 2,000 disposable email providers, and we regularly add new disposable email domains to our already extensive list.

Daily updates to our database ensure that new disposable emails are constantly monitored, and you can spot malicious ones before they do any damage.

How accurate is your classifier?

Our XGBoost classifier achieves 99.27% precision and 97.25% recall on a 17,701-domain holdout test set. Each domain in the feed ships with a confidence band so you can adjust your tolerance — strict (≥99.5% precision), default (≥99.2%), or permissive (≥99.1%).

How do you find disposable domains that aren't on public block-lists?

We resolve live MX records for every candidate and cluster domains by their shared mail-server infrastructure. When we identify a server hosting known disposable services, we run a reverse-MX lookup against it to surface every other domain on that same server. In the most recent refresh, this surfaced 44,799 disposable domains that don't appear on any public block-list.