Is ZapBounce more accurate than BulkEmailChecker?

Compare coverage before accuracy. BulkEmailChecker states 99.7%, which they describe as independently audited without naming the auditor. Vendor accuracy claims in this market are calculated after unknown and catch-all addresses leave the denominator. ZapBounce reports coverage, the share of the list with a definite verdict, so the rest is visible, labeled and never billed.

Why switch from BulkEmailChecker to ZapBounce?

Unknowns are never billed, stated on our pricing page. BulkEmailChecker's pricing page does not address it either way. Credits never expire, with no condition attached. Theirs last while the account is active. 100 free credits every month, recurring, against their 10 free checks. Coverage reported on every list, next to the results, rather than a 99.7% figure described as audited with no auditor named. Our own SMTP check on port 25, closed before DATA, with the server's literal reply code on every row so you can audit any verdict yourself.

ZapBounce vs BulkEmailChecker

BulkEmailChecker has run since 2012 and publishes a low ladder. The argument on this page is about evidence: their accuracy claim is described as independently audited, with no auditor named and no report linked anywhere we could find. ZapBounce reports coverage beside its results instead, so the denominator arrives with every list.

	ZapBounce	BulkEmailChecker
Accuracy reporting	Coverage stated: the share of your list with a definite verdict	99.7%, which they describe as independently audited without naming the auditor
1,000 addresses	$5	$2.95
10,000 addresses	$25	$9.95
100,000 addresses	$139	$74.95
Free tier	100 a month, no card	10 free checks without signing up
Credit expiry	Never	Credits never expire while the account is active
Billed for unknowns	No	Not stated

BulkEmailChecker figures read from their own pricing page in September 2026.

How BulkEmailChecker prices it

The lowest published ladder we found: $2.95 for a thousand, $9.95 for ten thousand, $74.95 for a hundred thousand, $409.95 for a million, down to $1,779.95 at ten million. Credits never expire while the account is active. There is also an unlimited API tier with dedicated resources and no per-email charge.

Why teams pick ZapBounce over BulkEmailChecker

What changes when your list runs through ZapBounce instead.

The short version

Unknowns are never billed, stated on our pricing page. BulkEmailChecker's pricing page does not address it either way.
Credits never expire, with no condition attached. Theirs last while the account is active.
100 free credits every month, recurring, against their 10 free checks.
Coverage reported on every list, next to the results, rather than a 99.7% figure described as audited with no auditor named.
Our own SMTP check on port 25, closed before DATA, with the server's literal reply code on every row so you can audit any verdict yourself.

Moving off BulkEmailChecker

An answer their pricing page does not give. Whether unresolved addresses are billed is not stated there, and on a B2B list that category is a quarter of the file. Teams that want the rule in writing, and the unresolved share as a number, look for a vendor that prints both.

Bulk in, bulk out. If you use the unlimited API tier, compare it against your actual monthly volume at a per-address rate, remembering that ZapBounce leaves unknowns, duplicates and syntax rejects off the count.

The hard addresses, and how they come back

Catch-alls, Yahoo, cloud blocks and traps

An accuracy figure described as independently audited is a stronger claim than an unaudited one, and it is only as good as the audit. No auditor is named and no report is linked where we looked in September 2026. Ask them for it, because if the document exists it is the most valuable thing in this category and they should be leading with it.

Twelve billion addresses verified since 2012 is real scale and a real signal. It is also not a measurement of accuracy, and the two get presented together often enough that it is worth separating them.

Accept-all domains accept every recipient by design, at any price and any scale. Yahoo and AOL do it deliberately to defeat harvesting, and Gmail and Microsoft 365 throttle probes from cloud ranges. ZapBounce returns them as unknown, and an unknown costs nothing.

Pristine spam traps are undetectable at the protocol level, so no audit, scale or price removes them.

Questions people ask about BulkEmailChecker

What should we ask BulkEmailChecker before buying?

Ask for the independent audit behind the 99.7% figure. If it exists and the method is disclosed, it is the most useful document in this category. Then ask whether unresolved addresses are billed. ZapBounce answers that one on its pricing page: they are not.

Does 99.7% mean three in a thousand are wrong?

Among the addresses that produced a definitive verdict, yes. The accept-all domains and the servers that refused to answer left the calculation before it started, which is true of every percentage in this market. Hunter's benchmark of 15 verifiers (3 November 2025) measured the field at 31.2% to 70.0% counting everything.

What is the unlimited API tier?

Dedicated resources with no per-email charge, a different pricing shape from anything else on this site. It is built for a steady, very high real-time volume. A per-address ladder suits lists that arrive in batches, with a budget that follows them.

Is ZapBounce cheaper than BulkEmailChecker?

At 100,000 addresses we list $139 and they list $74.95. Compare the per-address rate rather than the headline, and check what each side does with unknowns: ours are never billed.

Can I test both before deciding?

Yes, and you should. Run the same sample of a few thousand addresses through each and compare how many came back unresolved. That difference matters more than either accuracy claim.

Ask them for the audit behind the 99.7%. If it exists with a disclosed method, it is the best document in this category and we will link to it ourselves.

Run the same sample through us and BulkEmailChecker

100 free checks a month, no card, and the unknowns come back labeled.

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