Best free email verifiers
Free email verification tiers range from 20 credits a day to 250 one-time, and the distinction that decides their usefulness is whether the allowance recurs or runs out once.
How this was compared
Figures read from each vendor's own pages in September 2026. Where a vendor is missing from a column, we could not read it rather than estimating.
The short version
- Size of the free allowance, read from each vendor's own page in September 2026.
- Whether it recurs monthly or daily, or is a one-time grant at signup.
- Whether a card is required, since a free tier behind a card is a trial rather than a free tier.
- Whether unresolved results consume the free credits.
- What the free tier is actually useful for: a sample, a small list, or an ongoing trickle.
At a glance
| 10,000 addresses | Credit expiry | Bills unknowns | |
|---|---|---|---|
| ZapBounce | Not a verification vendor | ||
| Emailable | About $0.0076 an address with a subscription | Credits never expire | No |
| Reoon | $11.90 | Instant credits never expire | Not stated |
| EmailVerify.io | $25 for 20,000 | Pay-as-you-go credits never expire; subscription credits roll two months | Not stated |
| Bouncer | $60 | Credits never expire | No |
| DeBounce | Tiered from 5,000 to 5,000,000 | Credits never expire | Not stated |
| Hunter | Plans from $49 to $299 a month | Credits expire after 12 months | Not stated |
Vendor figures read from their own pricing pages in September 2026. Confirm before purchase, because prices move.
The ranking
Best first, with the situation each one wins and the situation it loses.
ZapBounce
100 credits a month, recurring, no card. The free tier reports the unresolved share as a headline figure, which is the number worth comparing between vendors and the one most free tiers leave in an export.
- Best for:
- Testing what a sample of your own list actually looks like, including how much of it nobody can judge.
- Not for:
- A large free allowance. Emailable gives 250 credits and Reoon adds a daily allowance on top of signup credits; 100 a month is smaller than both.
Emailable
250 credits is the largest one-time free allowance in the category and enough to check a genuine sample rather than a handful of addresses.
- Best for:
- Evaluating a vendor properly before committing, with a sample big enough to mean something.
- Not for:
- Ongoing free use, since it does not recur.
Reoon
20 a day plus 100 on signup, which is the only structure here that keeps working after the first week.
- Best for:
- Occasional single checks as part of a manual sales workflow.
- Not for:
- Checking a list, since 20 a day is not a batch.
EmailVerify.io
100 credits a month, recurring, which beats a one-time grant of the same size for anyone with a regular trickle of addresses.
- Best for:
- Small ongoing needs that never reach a paid tier.
- Not for:
- A one-off clean of anything larger than 100 addresses.
Bouncer
100 credits with the clearest terms in the category and an explicit policy of not billing unknowns, which matters even on a free tier.
- Best for:
- Testing how a vendor reports the addresses it could not resolve.
- Not for:
- Volume of any kind.
DeBounce
100 credits on a platform whose paid rates are the lowest here, which makes the free tier a genuine preview of the commercial option.
- Best for:
- Previewing a vendor you are likely to buy from at volume.
- Not for:
- Judging cost, since catch-all validation carries extra credits on the paid tiers.
Hunter
50 credits a month, recurring, with verification costing half a credit, so the practical allowance is larger than the number suggests.
- Best for:
- Sales users who want finding and verifying in the same free allowance.
- Not for:
- List cleaning, and the credits expire after twelve months.
Our own first place, and what it does not cover
When none of these is the answer
For a single address, a free tier is more ceremony than the job needs. For a list over a few thousand, no free tier reaches it and the question becomes which paid rate is best, which is a different page.
Questions people ask
Are free email verifiers accurate?
They generally run the same engine as the paid tier, so the results are the same. The constraint is volume rather than quality.
Which free tier is largest?
Emailable's 250 credits, as a one-time allowance. For recurring allowances, EmailVerify.io and ZapBounce give 100 a month and Reoon adds 20 a day.
Do free tiers require a card?
Several do not, and it is worth checking, because a free tier behind a card is a trial with a different name.
Run the same sample through two of them
100 free checks a month, no card. Compare how many addresses each one declined to judge, which matters more than either accuracy claim.