isitdisposable vs ZeroBounce
ZeroBounce is an established bulk email verification platform with scoring, activity data, and list cleaning. It is priced per check and aimed at marketers cleaning lists at scale.
| Dimension | Is It Disposable | ZeroBounce |
|---|---|---|
| Primary purpose | Real-time disposable and deliverability detection at signup | Bulk and real-time email verification (list cleaning) |
| Detection method | DNS-level (MX, A, AAAA). No SMTP mailbox probing, ever | Includes SMTP mailbox probing, catch-all, and spam-trap checks |
| Over-quota behavior | Fails open with a safe allow (HTTP 200), so your form never breaks | Per-credit or per-plan; behavior on exhaustion varies |
| Enforcement model | Per-account policy maps every signal to allow, warn, or block | Returns a status or score; enforcement is left to you |
| Signals returned | Disposable, deliverability, relay, public provider, role, typo, spam risk | Verification status, syntax, MX, catch-all, role, disposable |
| Integration | Drop-in JavaScript snippet, REST API, and a batch endpoint | REST API and bulk upload; some offer a free browser checker |
| Logging and privacy | Domain-only logging by default; stricter no-storage mode available | Varies by provider; review their data policy |
When ZeroBounce might be the better fit
If you want marketing-oriented list scoring and enrichment across a large database, ZeroBounce covers that ground.
Where signup protection differs
Whatever you pick, three things matter at the signup form specifically, and they are the three we put in writing:
Fails open, guaranteed
Over quota or during an outage you get a safe allow, clearly marked unchecked. A signup is never lost to a detection dependency.
Your policy, not a score
Every signal maps to allow, warn, or block in your own policy. We return the action; your form enforces it.
Domain-only logging
Request logs never store the part before the @. The opt-in no-storage mode keeps only the verdict and billing metadata.
Try the real engine for free
The demo runs the live detection engine - no account needed. Sign up for a 14-day full-access trial to see the full product, then stay on the Free plan or upgrade.
Comparison based on public information and our June 2026 research; competitor features and pricing change, so verify current details on their site. See other comparisons.