MillionVerifier alternative
The MillionVerifier alternative that verifies catch-alls.
MillionVerifier is the cheapest credible verifier per address, and that is not a marketing claim to argue with. If your lists resolve cleanly on a single pass, it is hard to beat on price.
The reason people go looking for an alternative is narrower than price. On B2B lists a quarter of every file comes back flagged as catch-all, and a flag is not a verdict. This page is about that specific bottleneck, and about when staying put is the right call.
The core issue
A flag is not a verdict.
Catch-all verification appears on MillionVerifier feature lists next to syntax checking, MX lookups and disposable detection. The mechanism is narrower than the label suggests. MillionVerifier establishes that a domain is configured to accept mail for any address and returns catch-all as the result. The mailbox itself is never tested.
That is accurate reporting and it is genuinely useful information. It is also where the answer stops. From the buyer’s seat the address is indistinguishable from one nobody checked: you cannot tell whether sending to it will land in a real inbox or bounce into a hard failure that costs you domain reputation. The decision gets handed back to you unresolved, on a quarter of the list.
The honest reasons
Why teams leave MillionVerifier.
Four recurring themes. The first one drives most of the switching; the rest are friction that accumulates.
01
Catch-alls are flagged, never resolved
MillionVerifier lists catch-all handling as a feature, and it does detect that a domain accepts mail for any address. What it does not do is test the specific mailbox behind that domain. The result comes back as a catch-all status, which from the buyer's side looks identical to an unanswered address. This is detection, not resolution, and on B2B lists it accounts for a quarter of everything you paid to check.
02
Accuracy softens on Yahoo and AOL
Users consistently report weaker results on Yahoo and AOL addresses, where the SMTP responses are less cooperative and a single-pass check has less to work with. If your lists skew consumer or carry a long tail of legacy free-provider addresses, that is a segment where the verdicts need more scrutiny than the headline accuracy figure implies.
03
The interface stays basic
The dashboard does the job and little more. Reporting depth is limited, segmentation of results is thin, and teams that want to slice a list by result quality or track verification over time end up exporting to a spreadsheet to do it. That is a fair trade at the price, but it is a real friction point as volume grows.
04
Support is email ticketing only
There is no live channel. When a bulk job behaves unexpectedly mid-campaign, the response cycle is measured in hours rather than minutes. For a scheduled send that is usually fine. For a send going out that afternoon, it is the thing people cite when they start looking around.
The other side
What you get when you switch.
Each answer maps to one of the four reasons above, in the same order.
The catch-all segment gets a verdict
A primary SMTP engine settles the clear-cut addresses, then a proprietary catch-all resolution engine re-tests the ambiguous ones and returns deliverable or risky for roughly 72 percent of them.
Two passes over the hard addresses
Addresses that a single pass struggles with, including uncooperative free-provider domains, are exactly the ones routed into the second pass rather than being written off as unknown.
Results you can segment
Filtered CSV exports by result type, live progress every 5 seconds during a run, and a full transaction history for every credit spent and refunded.
Credits that never expire
No subscription, no auto-renewal, no expiry clock on unused balance. Buy a pack when a campaign needs it and keep what you do not spend.
Run the numbers
Price per address, or price per lead.
MillionVerifier is cheaper per address and that stays true. The question worth asking on a B2B list is what each tool leaves you able to send to.
MillionVerifier on a 10K list
$24
- Clear-cut addresses resolved
- 7,500
- Catch-alls flagged, unusable
- 2,500
- Usable deliverable leads
- ~5,800
LeadList Verifier on the same list
$55
- Clear-cut addresses resolved
- 7,500
- Catch-alls resolved by Pass 2
- 2,500
- Usable deliverable leads
- ~7,600
The relevant metric
MillionVerifier delivers usable leads at $24 / 5,800, about $0.0041 each. LeadList Verifier delivers them at $55 / 7,600, about $0.0072 each. The cheaper number leaves roughly 1,800 deliverable leads unclaimed. Whether that trade is worth it depends entirely on what a qualified B2B lead is worth to you.
Figures assume a 25 percent catch-all rate and 72 percent second-pass resolution. Catch-all density varies by industry and list source. B2C lists run far lower, which is precisely why MillionVerifier remains the right call for those use cases.
At a glance
Side by side, briefly.
Several rows are a genuine tie, and one goes to MillionVerifier outright.
| Factor | MillionVerifier | LeadList Verifier |
|---|---|---|
| Catch-all addresses | Flagged as catch-all | Resolved to a verdictBetter |
| Verification passes | One | Two, second pass on ambiguous onlyBetter |
| Credit expiry | Never expire | Never expire |
| Subscription | None | None |
| Price per email at 10K | $0.0024 | $0.0055 |
| Usable leads on a 10K B2B list | ~5,800 | ~7,600Better |
| Result segmentation | Basic | Filtered exportsBetter |
| Support | Email ticketing | Email, founder-ledBetter |
Competitor pricing reflects published rates as of May 2026. Verify current pricing on the MillionVerifier pricing page before you buy. For the full breakdown, read LeadList Verifier vs MillionVerifier.
Migration
Moving off MillionVerifier.
There is no retention clock here, so you can run this as a test rather than a migration and decide afterwards.
01
Export your MillionVerifier results
Download the finished list as CSV. MillionVerifier does not expire results, so there is no clock on this step, which makes the migration less urgent than moving off a tool with a retention window.
02
Filter to catch-all and unknown
Keep only the rows where the result is catch-all or unknown. On a 10,000-address B2B list that is usually around 2,500 rows. The good and bad verdicts MillionVerifier returned are reliable and do not need re-testing.
03
Run two-pass on that segment
Upload the filtered file and verify it here. At 2,500 addresses the cost is roughly $14 against the $55 for a full 10,000-credit pack, and the 100 free signup credits cover a sample first.
04
Decide with your own numbers
Count how many rows moved from catch-all to deliverable. If the recovered leads justify the higher per-email rate on your list, move the workflow. If your lists are B2C and the catch-all segment is small, MillionVerifier may well remain the better economics.
FAQ
MillionVerifier switching questions.
What is the best MillionVerifier alternative for catch-all domains?
The distinction to test for is whether a verifier resolves catch-alls or only detects them. MillionVerifier returns a catch-all status once it identifies that the domain accepts all mail, without testing the individual mailbox. LeadList Verifier runs a second pass over that segment with a proprietary catch-all resolution engine and returns a definitive deliverable or risky verdict for roughly 72 percent of it.
Is MillionVerifier cheaper than LeadList Verifier?
Per email, yes, and by a clear margin. MillionVerifier is around $0.0024 per address at 10,000 against $0.0055 here. That is a genuine advantage on lists where most addresses resolve cleanly. The comparison changes on B2B lists, where the cost that matters is price per usable lead rather than price per address checked.
When should I stay with MillionVerifier?
When your lists are B2C or consumer-heavy, catch-all density is low, and most addresses come back with a clear verdict on a single pass. In that situation you are paying for a second pass that has little work to do, and MillionVerifier is the better economics. The switch case is B2B lists where the catch-all segment is the bottleneck.
Do I need to re-verify my whole list to switch?
No. Re-verify the catch-all and unknown segment only, which is typically a quarter of a B2B list. The deliverable and undeliverable verdicts MillionVerifier already returned are settled results and carry over as they are.
How does two-pass verification handle Yahoo and AOL addresses?
Free-provider domains with uncooperative SMTP behaviour are routed into the second pass rather than being returned as unknown after a single attempt. The second pass uses deep SMTP-level verification and waterfall routing, which is designed for exactly the addresses a single check cannot settle.
Can I test the difference on my own list?
Yes, and it is the only test worth running. Every account starts with 100 free credits and no card. Take the catch-all rows out of a list MillionVerifier has already processed, run them here, and count how many come back with a definitive verdict.
Resolve the quarter of your list nobody tested.
100 free credits on signup, no card required. Point them at the rows MillionVerifier flagged as catch-all.
Switching from something else? See all alternatives, the two-pass engine, or full pricing.