Disposable Email

What is a disposable email?

A disposable email address (also called a temporary, throwaway, or burner email) is an email address that is created for short-term use and requires no registration or personal information. Services like Guerrilla Mail, Temp Mail, and 10MinuteMail provide instant addresses that receive emails for a limited time before the address and its contents are permanently deleted. Some services also allow users to create addresses on the fly by using any username at the provider's domain.

Why Disposable Emails Are a Problem

Disposable emails undermine email verification, one of the most fundamental account validation mechanisms. Fraudsters use them to create accounts without providing a traceable contact point, making it trivial to engage in multi-accounting, abuse free trials, claim promotional offers repeatedly, and register bot accounts for spam or manipulation. Since the addresses are temporary, any follow-up communication from the platform bounces, and the fraudulent user is long gone.

Detecting Disposable Emails

Detection approaches include:

• Domain blocklists: Maintaining lists of known disposable email provider domains. However, new providers appear constantly.
• DNS analysis: Checking MX records for patterns common to disposable providers.
• Local database lookup: Downloading a frequently updated list of disposable email domains and querying it locally, with no external API calls required.
• Behavioral signals: Flagging accounts registered with domains that have very high registration volumes or low engagement rates.

AntiProxies and email intelligence

AntiProxies includes a disposable email domain list as part of its downloadable database. You download the file, load it into your database or application, and check email domains locally at registration time — no external call required. When a user registers with a throwaway domain, your code catches it before the account is created. Combined with proxy detection and device fingerprinting, this closes most of the easy paths for automated account creation and multi-accounting abuse. For a detailed look at how these services operate, read how disposable email services work. You can also download free sample data to see the domain coverage. See our disposable email database for full coverage details.