Free Email Verification Limits: Daily, Monthly or One-Time, and What Each Gets You Done
Free email verification comes with a limit, and the limit comes in three shapes: a one-time batch, a monthly refill or a daily refill. The shape matters as much as the number. SimpleVerifier gives a one-time 100 checks per Google account with no card, plus a single-address checker with no account at five checks a minute. This post shows what each kind of limit lets you actually get done, using published figures with dates.
The three kinds of free limit
One-time batch. You get a number of credits at sign-up and that is it. Good for deciding whether to buy. Bad for anything ongoing. Examples in our data: SimpleVerifier (100), Emailable (250), Scrubby (200), Selzy (up to 300).
Monthly refill. A fixed amount each month. Good for a steady trickle, such as a few leads a week. Examples: ZeroBounce (100 a month), EmailVerify.io (100 a month), Bounceless (1,000 a month with a work email), Hunter (50 credits a month, where a verification costs 0.5).
Daily refill. A fixed amount each day, which does not carry over. Good for checking leads as they come in. Examples: QuickEmailVerification (100 a day), MyEmailVerifier (100 a day for verified accounts), Verifalia (25 a day), Reoon (20 a day), BillionVerify (20 a day you log in, up to 600 a month).
A fourth thing sometimes sits beside them: a free single-address checker with no account. It is a web form with a rate cap. On SimpleVerifier, that is the free email checker. Bulk Email Checker lists 10 free checks without signing up, and Proofy offers a single-address checker with no sign-up.
What each limit lets you get done
Work it out in addresses per month, using the shape.
| Free shape | Example | Roughly, in a 30-day month |
|---|---|---|
| One-time 100 | SimpleVerifier | 100, once, ever |
| Monthly 100 | ZeroBounce | 100 |
| Monthly 1,000 | Bounceless | 1,000 |
| Daily 20 | Reoon | Up to 600 |
| Daily 25 | Verifalia | Up to 750 |
| Daily 100 | QuickEmailVerification | Up to 3,000 |
Multiplying a daily number by thirty gives the ceiling, which you only reach if you check every day and have addresses to check every day. BillionVerify's page caps it explicitly at 600 a month. For a list that exists today as one file, a daily allowance means days of waiting: a 3,000-row file on a daily 100 takes thirty days.
Dated comparison
Figures are from each vendor's own public pages, as recorded in our comparison data. They change. Confirm before you rely on them.
| Vendor | Free allowance as published | Shape | Checked |
|---|---|---|---|
| SimpleVerifier | 100 checks per Google account, no card | One-time | Our own plan |
| ZeroBounce | 100 validations a month | Monthly | 19 Oct 2026 |
| Bounceless | 1,000 credits a month with a work email | Monthly | 4 Nov 2026 |
| EmailVerify.io | 100 credits every month | Monthly | 5 Nov 2026 |
| QuickEmailVerification | 100 verifications a day | Daily | 3 Nov 2026 |
| MyEmailVerifier | 100 credits a day for verified accounts | Daily | 5 Nov 2026 |
| Verifalia | 25 verifications a day | Daily | 2 Nov 2026 |
| Reoon | 20 a day, plus 100 instant credits at sign-up | Daily plus one-time | 30 Oct 2026 |
| BillionVerify | 20 credits every day you log in, up to 600 a month | Daily | 5 Nov 2026 |
| Emailable | 250 credits per new account | One-time | 23 Oct 2026 |
| Bulk Email Checker | 10 checks without signing up | No account | 4 Nov 2026 |
Which shape fits your job
You have one file and need to know whether to trust the verifier. One-time batch. A hundred rows from a spread of your list tell you plenty. The 100-free-checks walk-through covers how to pick the rows.
You collect leads or signups steadily. Daily or monthly refill. Check each new lead as it arrives. The free ceiling is enough for a small operation. Past that, the paid API and plans exist for a reason.
You need one answer about one address. The no-account checker. We keep ours open with no sign-in at five a minute, because some questions do not need an account.
You have a list of thousands and want it clean this week. None of the above. A free limit will not clean it; compare paid options.
What counts toward a limit
Details trip people up. Before you plan around a free allowance, check:
- Does a duplicate cost a credit? Some vendors say duplicates are removed free of charge. Removing duplicates yourself first is free and saves credits. See free cleanup steps.
- Does an unconfirmed result cost one? Some vendors do not charge for unknown results. Others do.
- Does a credit equal one verification? Not always. Hunter's verification costs 0.5 credits.
- Does it expire? Clearout's free 100 has no expiry on its page. Check the others' pages.
- Does the free tier run the real check? A limit does not matter if the check skips the mailbox step. See what free verification skips.
- Does it need a card or a work email? Bounceless's 1,000 is for a work email address. Many others say no card is needed.
On SimpleVerifier the 100 are checks, one per address. Confirmed results are cached for 14 days, so re-checking an overlapping list in that window is not billed again.
Do not stack accounts
It is tempting to make several accounts to stretch a one-time batch. Do not. Vendors tie allowances to an email, a Google account or an IP address, and it breaks their terms. It also gives you nothing you can build on: a process that depends on fresh sign-ups every week is a process that will stop working. If you need more than a free allowance, the honest options are paying or picking a vendor whose recurring free amount fits.
When paying makes sense
You have outgrown a free limit when:
- you check lists larger than a few hundred rows,
- you need results the same day, not spread across refills,
- you want an API, which is on paid plans for us,
- you run verification every month and want the cost to be predictable.
Then the choice is a flat monthly plan or a prepaid pack.
| Option | What it sells | Checked |
|---|---|---|
| SimpleVerifier Starter | $9 a month for 2,500 emails | Our own plan |
| SimpleVerifier Pro | $39 a month, first 100,000 checks a month at full speed, then slower, never cut off | Our own plan |
| Reoon | Packs: 10,000 for $11.90, 100,000 for $116.40 | 3 Nov 2026 |
| DeBounce | Packs: 10,000 for $25, 100,000 for $135 | 2 Nov 2026 |
If you clean one list once, a prepaid pack costs less than a month of Pro and keeps the credits. If lists arrive every month, Pro means no counting credits and no daily waiting. Details on the pricing page.
Bottom line
Read a free limit as a shape and a number. A one-time batch is a trial, a monthly refill is a trickle, a daily refill is for leads as they come. SimpleVerifier's is a one-time 100 with Google sign-in and no card, plus a no-account checker. Start at the verify page, and when the limit stops fitting, work out the paid option from published prices.
Common questions
How many emails can I verify for free?
It depends on the vendor. Published free allowances range from 10 checks to 1,000 a month, as shown in the table, and are one-time, monthly or daily. SimpleVerifier gives 100 once per Google account, with no card.
Is a daily free limit better than a one-time batch?
For checking leads as they arrive, yes: 100 a day is more than 3,000 over a month if you use it. For testing a verifier on one file, a bigger one-time batch is better, because you do not have to wait for the refill.
Can I get around a free limit by making more accounts?
Do not. Vendors tie free allowances to an email, a Google account or an IP, and multiple accounts break their terms. If you need more, use a paid plan or a prepaid pack.
What is SimpleVerifier's free limit?
100 checks per Google account, once, with no card. The free email checker, which needs no account, allows five checks a minute.
What is the cheapest way to verify more than the free limit?
For a single list, a prepaid pack from another vendor can cost less than a month of SimpleVerifier Pro. For lists every month, a flat monthly plan is easier to predict. Figures are on the pricing page and the vendors' own pages.
Check your list before you send
Real mailbox checks over SMTP, and nothing is sent to the address. Sign in with Google and your first 100 email checks are free, no card. Plans for bigger lists are on the pricing page.