Pricing checked 12 Oct 2026
Mailfloss pricing
Mailfloss charges $29.00 for 10,000 checks a month as of 12 Oct 2026 ($29/mo plan with 10,000 a month). In full: $29 a month for 10,000 credits, or pay as you go from $8.00 per 1,000 on a 1,000 pack, falling to $1.04 at 2,500,000. SimpleVerifier Pro is $39 a month, never cut off: the first 100,000 emails a month run at full speed.
Source: mailfloss.com pricing page · as of · by SimpleVerifier Team · full Mailfloss vs SimpleVerifier comparison
$8 for a 1,000-credit pack
$29/mo plan with 10,000 a month
Pro plan, never cut off: the first 100,000 emails a month run at full speed
Mailfloss plans and credit packs
Every tier on Mailfloss’s pricing page as we read it on 12 Oct 2026. Per 1,000 is the tier price divided by its allowance.
| Route | Volume | Price | Per 1,000 |
|---|---|---|---|
| Subscription | 10,000 a month | $29/mo | $2.90 |
| Subscription | 25,000 a month | $59/mo | $2.36 |
| Subscription | 35,000 a month | $94/mo | $2.69 |
| Subscription | 60,000 a month | $174/mo | $2.90 |
| Subscription | 75,000 a month | $204/mo | $2.72 |
| Subscription | 125,000 a month | $209/mo | $1.67 |
| Subscription | 135,000 a month | $244/mo | $1.81 |
| Subscription | 175,000 a month | $354/mo | $2.02 |
| Subscription | 260,000 a month | $479/mo | $1.84 |
| Subscription | 275,000 a month | $509/mo | $1.85 |
| Subscription | 375,000 a month | $659/mo | $1.76 |
| Subscription | 510,000 a month | $729/mo | $1.43 |
| Subscription | 525,000 a month | $759/mo | $1.45 |
| Subscription | 625,000 a month | $909/mo | $1.45 |
| Credit pack | 1,000 credits | $8 | $8.00 |
| Credit pack | 10,000 credits | $40 | $4.00 |
| Credit pack | 50,000 credits | $160 | $3.20 |
| Credit pack | 100,000 credits | $300 | $3.00 |
| Credit pack | 250,000 credits | $500 | $2.00 |
| Credit pack | 500,000 credits | $800 | $1.60 |
| Credit pack | 1,000,000 credits | $1,200 | $1.20 |
| Credit pack | 2,500,000 credits | $2,600 | $1.04 |
Source: mailfloss.com/pricing/, as of 12 Oct 2026. Prices in USD.
Cost at 1k, 10k, 50k, 100k and 1M emails a month
A recurring monthly volume on each side’s lowest-cost published route: for Mailfloss, the smallest subscription tier that covers it or the pay-as-you-go pack bought again each month; for SimpleVerifier, Starter or Pro, whichever costs less.
| Emails a month | Mailfloss | SimpleVerifier | Lower cost |
|---|---|---|---|
| 1,000 | $8.00Pay as you go: 1,000-credit pack at $8.00 per 1,000 | $9.00Starter plan, 2,500 emails a month, unused emails don't roll over | Mailfloss, by $1.00 |
| 10,000 | $29.00$29/mo plan with 10,000 a month | $39.00Pro plan, never cut off: the first 100,000 emails a month run at full speed | Mailfloss, by $10.00 |
| 50,000 | $160.00Pay as you go: 50,000-credit pack at $3.20 per 1,000 | $39.00Pro plan, never cut off: the first 100,000 emails a month run at full speed | SimpleVerifier, by $121.00 |
| 100,000 | $209.00$209/mo plan with 125,000 a month | $39.00Pro plan, never cut off: the first 100,000 emails a month run at full speed | SimpleVerifier, by $170.00 |
| 1,000,000 | $1,200.00Pay as you go: 1,000,000-credit pack at $1.20 per 1,000 | $249.00Agency plan, never cut off: the first 750,000 emails a month run at full speed, the rest in a slower lane | SimpleVerifier, by $951.00 |
- On these published prices Mailfloss costs less than SimpleVerifier at 1,000 and 10,000 emails a month, and the table says so.
- SimpleVerifier’s metered plan (Starter at $9 a month for 2,500 emails a month) resets every billing month, with no rollover, and cover email verification only, without the API, finder or phone lookups. Pro includes them.
- Pro is never cut off: the first 100,000 emails a month run at full speed, then lists of 2,000 rows or more run in a slower shared lane. Large lists queue rather than fail, with an ETA on the job card.
- “Not published” means Mailfloss’s page did not price that volume; we do not extrapolate. Run your own numbers in the cost calculator.
Mailfloss cost per 1,000 emails at 10k, 100k and 1M a month
The monthly figures above divided by the volume. A lower number per 1,000 at a bigger volume is the volume discount; “Not published” means Mailfloss’s page did not price it.
| Emails a month | Mailfloss per 1,000 | SimpleVerifier per 1,000 |
|---|---|---|
| 10,000 | $2.90 | $3.90 |
| 100,000 | $2.09 | $0.39 |
| 1,000,000 | $1.20 | $0.25 |
Calculator
Mailfloss vs SimpleVerifier at your volume
Enter how many emails you verify in a typical month. Both figures use the published prices in the tables above, nothing else. Nothing is sent anywhere.
Mailfloss
$29.00
$2.90 per 1,000
$29/mo plan with 10,000 a month
SimpleVerifier
$39.00
$3.90 per 1,000
Pro plan, never cut off: the first 100,000 emails a month run at full speed
Free allowance and credit expiry
Mailfloss
- Free allowance
- Not recorded; check mailfloss.com
- Credit expiry
- Mailfloss says its pay-as-you-go credits never expire.
SimpleVerifier
- Free allowance
- The first 100 email checks free after Google sign-in, once per account, no card.
- Credit expiry
- Pro has no allowance to expire. Starter allowances reset each billing month; unused emails don’t roll over. Confirmed results are cached for 14 days, so re-checking them inside that window uses nothing.
How Mailfloss meters usage
In Mailfloss’s own framing: monthly plans by volume, or prepaid credits that never expire. What to watch: the plan is sized by monthly volume, so a list that grows pushes you up a tier whether or not the extra addresses are worth checking.
What it does well: Mailfloss is worth keeping if you want verification that runs automatically against your email platform's list rather than as uploads you remember to do.
For small volumes Mailfloss can cost less than Pro: up to 10,000 addresses can be bought from Mailfloss for under $39. If that covers your list and you verify it once, Mailfloss may be the better buy.
When to pick Mailfloss instead
- Pick Mailfloss if you want verification that runs automatically against your email platform's list rather than as uploads you remember to do.
- Pick Mailfloss on price at 1,000 and 10,000 emails a month, where its published route costs less than ours.
How to work out what Mailfloss will cost you
- 1
Count how many addresses you verify in a typical month, including re-checks of lists you already cleaned.
- 2
Find the smallest Mailfloss tier whose allowance covers that number in the plans table, and compare it with buying a pay-as-you-go pack of that size, if Mailfloss sells one.
- 3
Check whether unused Mailfloss credits expire before you would use them, and whether the plan meters finding and verifying from the same pool.
- 4
Compare the result with SimpleVerifier: Starter at $9 a month for 2,500 emails a month, or Pro at $39 a month, never cut off: the first 100,000 emails a month run at full speed, then big lists run slower.
Before you buy Mailfloss credits, test an address here
Type any address. It gets the same check the paid plans run: syntax, the domain’s mail servers and, where the provider allows it, a live mailbox check. Nothing is sent to the address.
Five checks a minute, no account needed. Nothing is sent to the address — we ask its mail server whether the mailbox exists, then disconnect.
Have a list? Sign in with Google and the first 100 addresses are checked free, with results to download. No card.
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Common questions
- How much does Mailfloss cost?
- Mailfloss costs $29 a month for 10,000 credits, or pay as you go from $8.00 per 1,000 on a 1,000 pack, falling to $1.04 at 2,500,000. Metering: monthly plans by volume, or prepaid credits that never expire. Prices read from mailfloss.com on 12 Oct 2026.
- How much does Mailfloss cost for 1,000 emails a month?
- 1,000 emails a month costs $8.00 on Mailfloss (pay as you go: 1,000-credit pack at $8.00 per 1,000). On SimpleVerifier the lowest-cost route for 1,000 a month is $9.00 (starter plan, 2,500 emails a month, unused emails don't roll over; Starter covers email verification only, without the API, finder or phone lookups).
- How much does Mailfloss cost for 10,000 emails a month?
- 10,000 emails a month costs $29.00 on Mailfloss ($29/mo plan with 10,000 a month). On SimpleVerifier the lowest-cost route for 10,000 a month is $39.00 (pro plan, never cut off: the first 100,000 emails a month run at full speed).
- How much does Mailfloss cost for 50,000 emails a month?
- 50,000 emails a month costs $160.00 on Mailfloss (pay as you go: 50,000-credit pack at $3.20 per 1,000). On SimpleVerifier the lowest-cost route for 50,000 a month is $39.00 (pro plan, never cut off: the first 100,000 emails a month run at full speed).
- How much does Mailfloss cost for 100,000 emails a month?
- 100,000 emails a month costs $209.00 on Mailfloss ($209/mo plan with 125,000 a month). On SimpleVerifier the lowest-cost route for 100,000 a month is $39.00 (pro plan, never cut off: the first 100,000 emails a month run at full speed).
- How much does Mailfloss cost for 1,000,000 emails a month?
- 1,000,000 emails a month costs $1,200.00 on Mailfloss (pay as you go: 1,000,000-credit pack at $1.20 per 1,000). On SimpleVerifier the lowest-cost route for 1,000,000 a month is $249.00 (agency plan, never cut off: the first 750,000 emails a month run at full speed, the rest in a slower lane).
- Do Mailfloss credits expire?
- Mailfloss says its pay-as-you-go credits never expire. How Mailfloss describes its metering: monthly plans by volume, or prepaid credits that never expire.
- Does Mailfloss have a free plan?
- We have not recorded a free allowance from Mailfloss's page, so check mailfloss.com directly. SimpleVerifier gives the first 100 email checks free after Google sign-in, once per account, no card.
- What does Mailfloss cost per 1,000 emails?
- At 10,000 a month, Mailfloss works out to $2.90 per 1,000 and SimpleVerifier to $3.90 per 1,000. At 100,000 a month, Mailfloss works out to $2.09 per 1,000 and SimpleVerifier to $0.39 per 1,000. At 1,000,000 a month, Mailfloss works out to $1.20 per 1,000 and SimpleVerifier to $0.25 per 1,000.
- Is SimpleVerifier cheaper than Mailfloss?
- Not always. On these published prices Mailfloss costs less than SimpleVerifier at 1,000 and 10,000 emails a month, and the table says so. For small volumes Mailfloss can cost less than Pro: up to 10,000 addresses can be bought from Mailfloss for under $39. If that covers your list and you verify it once, Mailfloss may be the better buy.
- Is SimpleVerifier's Pro plan really never cut off?
- It is never cut off, and its speed limit is published. The first 100,000 emails each month run at full speed; past that, lists of 2,000 rows or more run in a slower shared lane rather than being refused or billed extra. Checks are paced so mail servers keep answering, and every job card shows an ETA. Business and Agency run 300,000 and 750,000 a month at full speed.
Check your own list first
The first 100 email checks free after Google sign-in, once per account, no card. Then Pro at $39 a month or Pro + Phone at $49.99, cancel anytime.