Disposable Email Checker
Detect temporary and throwaway email addresses from thousands of known disposable providers.
How it works
Disposable addresses are used to grab free trials, bypass limits and dodge follow-up. Blocking them at signup cuts fake accounts and protects your sender reputation.
This checker uses a continuously maintained list of disposable domains. The API goes further and verifies the mailbox itself.
Automate it with the API
Run this check for every address in your product, from any language.
# Free and sub-second - ideal for signup forms
curl -X POST "https://www.mailrambo.com/v1/verify?mode=fast" \
-H "Authorization: Bearer $MAILRAMBO_KEY" \
-H "Content-Type: application/json" \
-d '{"email": "jane@gmial.com"}'
# -> {"deliverable": false, "reason": "possible_typo", "suggestion": "jane@gmail.com",
# "checks": {"mx": true, "disposable": true, "role_account": false, "free_email": true}}API reference · Get a free API key
Building email/password signup with Better Auth? Use MailRambo's server-side screening plugin. Fast screening does not confirm mailbox existence; keep email confirmation enabled.
Frequently asked questions
How do I block disposable emails at signup?
Call the MailRambo API from your signup handler and reject when reason is 'disposable'. Test keys let you build this without spending credits.
Is Gmail a disposable provider?
No. Free providers like Gmail and Outlook are never flagged as disposable.
Related tools
Email Verifier
Check if an email address exists and will accept mail.
Free & Role Email Checker
Detect free-provider (Gmail, Yahoo) and role (info@, sales@) addresses.
Email Syntax Checker
Validate email format and catch typos like gmial.com.
Email Domain Health Checker
Full deliverability report: MX, SPF, DKIM, DMARC, BIMI and PTR with an A-F grade.
Run these checks from your code
Verify addresses at signup, clean lists and read SPF/DKIM/DMARC with one API call. 100 free verifications a month, test keys that cost nothing, and the API on every plan.