They disappear
A temporary inbox stops working within minutes or days, and every later email bounces.
Mailcleaner · Disposable email checker
A disposable email checker for lists and sign-up forms.
Flaxxa Mailcleaner flags addresses on known disposable (temporary) email domains, whether they arrive in a list you upload or through your sign-up form, and marks shared role addresses such as info@ and sales@ so you can treat them differently.
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mailcleaner.flaxxa.com / disposable-email-checker
Verify
VALID[email protected]google
Risk
8
Confidence
96
Signals
- MX found
- SMTP connectable
- Disposable
- Role-based
- Disposable list refresh
- Weekly
- info@, sales@, support@
- Role
- Block at sign-up
- Widget
- Or a whole list
- Bulk
01 / 04
Why remove disposable email addresses?
They skew your numbers
Fake sign-ups inflate trial and lead counts that never convert.
They abuse free offers
Throwaway addresses let one person claim a free plan or coupon many times.
02 / 04
How does the disposable email check work?
Read the domain
The part after the @ is compared with the list of known disposable providers.
Flag the match
A match gets the disposable verdict, reason disposable_provider and a high risk score.
Check for role addresses
Shared local parts such as info@ or noreply@ get the role-based verdict.
Block or filter
On a form, the widget stops the submit; in a list, filter them out of the export.
03 / 04
Where can you check for disposable emails?
Single check
Type one address into the app.
Bulk lists
Upload a CSV, TSV, TXT or XLSX file or paste a list.
Sign-up forms
The widget checks addresses on your own website.
API
is_disposable and is_role_based come back on every result.
04 / 04
What do you gain from blocking throwaway inboxes?
Cleaner data from the first touch.
Real sign-ups
People who want your product give an address they read.
Fewer bounces later
Temporary inboxes never reach your campaigns.
Fair free offers
Harder to claim the same offer over and over.
Keep exploring
More Mailcleaner capabilities
API and widget
An email validation API for single checks and batches of 1,000, file uploads and signed webhooks, plus a widget that checks addresses on your forms.
The checks
The checks behind each verdict: syntax, typo, disposable and role detection, MX lookup, an SMTP mailbox check, catch-all detection and deeper signals.
Email verification
Verify one email address or a whole list: a verdict, a 0–100 risk score and a confidence score for each, from a paste, a file, Google Drive or the API.
FAQ
Disposable email checker: common questions
A temporary inbox from services such as Mailinator or 10 Minute Mail, used once and abandoned. People use them to get past sign-up forms without giving a real address.
Get started in minutes
Try Flaxxa Mailcleaner free.
Spin up a workspace and put Disposable email checker through its paces.
Free plan · No credit card · Cancel anytime