Temp email providers let bad actors create fake accounts, abuse free trials, and pollute your user metrics. BounceZero maintains a live database of 8,000+ disposable providers - updated daily.
A 10-second temp inbox is all it takes to burn your free trial, skew your conversion data, and torch your sender reputation.
One person, unlimited accounts. Disposable addresses let abusers cycle through free trials, coupon codes, and referral bonuses indefinitely - costing you real infrastructure spend for zero revenue.
Fake signups inflate your user counts, crater your activation and retention rates, and make every funnel report a lie. You cannot optimize growth on data contaminated by throwaway accounts.
Temp inboxes expire within minutes. Every email you send them afterwards hard-bounces - and mailbox providers read rising bounce rates as a spam signal against your entire domain.
Disposable detection is one of six checks in every verification - every address gets the full pipeline, in a single 340ms API call.
8,000+ known temp email providers - 10minutemail, Guerrilla Mail, Mailinator, and thousands of obscure clones - updated daily as new domains appear.
Temp providers rotate domains to evade static blocklists. We flag freshly registered domains with disposable-provider fingerprints before they hit any public list.
Disposable services often share mail server infrastructure. We trace MX records back to known temp email backends, catching aliases static lists miss.
Beyond disposable detection, we verify the mailbox actually exists via SMTP handshake - so permanent-but-dead addresses get caught too.
admin@, info@, and support@ addresses signal low-intent signups. Flag or block them alongside disposables with a single API response field.
Some throwaway domains are recycled into spam traps. Our detection flags trap-risk addresses before they ever enter your sending lists.
From your first API key to a temp-email-proof signup form in under 15 minutes.
Sign up at bouncezero.io - no credit card required. You get 100 free verifications every month and your API key is issued instantly.
Call the verification endpoint when a user submits their email. Average response is 340ms - fast enough to run inline before the account is created.
The JSON response includes a dedicated is_disposable field, plus role, catch-all, spam trap, and mailbox existence signals - decide with one if-statement.
Reject disposable addresses outright, require a different email, or accept the signup but exclude it from trials and email campaigns - your rules, our data.
Upload your current user list (up to 500K emails per batch) and identify every disposable signup already in your database in 5-10 minutes.
Every plan includes all 6 verification checks - disposable detection is never a paid add-on.
100 verifications every month. No credit card. Full API access including the disposable flag.
Get Free API Key99.8% accuracy, 340ms responses, bulk batches up to 500K. Volume discounts available - see what a clean list saves you.
Everything you need to know about blocking temp emails with the BounceZero API.
A disposable (or temporary) email address is a short-lived inbox from services like 10minutemail, Guerrilla Mail, or Mailinator. It works long enough to receive a confirmation link, then expires - leaving you with an unreachable address and a fake user in your database.
When your signup form receives an email, you send it to the BounceZero API. We check the domain against our live database of 8,000+ disposable providers, analyze its MX infrastructure, and apply pattern matching for newly rotated domains. The response returns an is_disposable flag in about 340ms - fast enough to block the signup in real time.
Static blocklists go stale within days - temp email providers register new domains constantly to evade them. BounceZero updates its database daily and adds MX infrastructure tracing and new-domain fingerprinting, catching disposable domains before they appear on any public list. You also get five additional checks (mailbox existence, catch-all, role, MX, spam trap) in the same call.
No. BounceZero verifies at 99.8% accuracy - well above the ~95% industry benchmark. Legitimate providers like Gmail, Outlook, and company domains are never flagged as disposable, and every verdict comes with a confidence score so you control the blocking threshold.
Yes. Upload up to 500,000 emails per batch via bulk verification - a 10K list processes in 5-10 minutes. You get every address labeled with disposable, role, catch-all, and deliverability status, so you can purge fake accounts and clean your metrics in one pass.
Disposable detection is included in every BounceZero verification at no extra charge - $3 per 1,000 emails, with 100 free verifications every month and no credit card required to start.
Detect 8,000+ disposable email providers in a single 340ms API call. 100 free verifications every month - no credit card required.
99.8% accuracy - $3 per 1,000 verifications - Results in seconds
Follow BounceZero