SimpleVerifier Team · Reviewed
Is a monthly plan or pay as you go better for email verification?
Pay as you go usually costs less for one small list. A monthly plan usually costs less for big lists or lists you re-check, because re-checks count as new passes on per-email pricing. Find the volume where the two cost the same and see which side you are on. SimpleVerifier leads with monthly plans, from $9. It also sells packs.
The break-even sum
Divide a pack's price by its checks to get the cost per check. Then divide the plan price by that figure. Below that volume the pack costs less; above it, up to the plan's allowance, the plan costs less. The credits vs monthly plan calculator does the sum with prices you type.
For us: Pro is $39 a month, the first 100,000 a month run at full speed, then slower, never cut off. One-time packs from $15 for 10,000 checks up to $169 for 250,000; the credits never expire and run at standard speed (CSV verification only).
What the sum leaves out
Expiry, rollover, taxes, annual discounts, minimum purchases and speed limits are not in the arithmetic. Cold email also arrives in bursts, so price a quiet month and a busy one, not an average.
- Pay as you go suits irregular or one-off cleaning, especially when credits never expire.
- A monthly plan suits steady volume, and gives a bill you can predict.
- A competitor's credit pack can be cheaper than any subscription at low volume.
What SimpleVerifier costs and what it cannot confirm
- What it is
- Email verification with a real SMTP mailbox check: each address comes back valid, risky or invalid with a reason. Includes an email finder on Pro and up.
- Price per check
- Starter $9/mo for 2,500 ($3.60 per 1,000); Pro $39/mo, 100,000 a month at full speed ($0.39 per 1,000 when used), then slower, never cut off. Business $99/mo with 300,000 at full speed; Agency $249/mo with 750,000 at full speed.
- One-time packs
- 10,000 for $15 ($1.50 per 1,000); 25,000 for $29 ($1.16 per 1,000); 50,000 for $49 ($0.98 per 1,000); 100,000 for $79 ($0.79 per 1,000); 250,000 for $169 ($0.68 per 1,000). Credits never expire, run at standard speed, CSV verification only (no API or finder).
- Free checks
- First 100 email checks free with a Google sign-in, no card, once per account. Single checks on the free email checker need no account.
- Billing
- Monthly subscription, cancel anytime (yearly billing optional). One-time packs are listed above. Starter allowances reset monthly and do not roll over.
- Speed today
- Capacity is shared by every customer: plan on about 13,000 mailbox checks a day in the standard lane (more when the queue is quiet). Bad syntax, dead domains and disposable addresses return at once; a list of 100,000 takes days, not hours, and each job shows its estimated finish time.
- Catch-all handling
- Catch-all (accept-all) addresses stay risky, never valid, and are graded higher, medium or lower likelihood with the reasons. Anything a mail server does not confirm is risky.
- API and MCP
- REST API on Pro, Business and Agency (Pro includes 10,000 calls a month, then $1.50 per 1,000). Remote MCP server with 6 tools for Claude, ChatGPT, Cursor and VS Code. No API on Starter.
- Integrations
- Connects to Instantly, Smartlead, HubSpot and Mailchimp by API key: verifies a campaign or list and tags each contact with its result. CSV in and out for any other tool.
- Phone
- Free phone format checks (country, type range). Live carrier and line-type lookups come with Pro + Phone at $49.99/mo (5,000 a month). It never says a number is in service.
- Privacy and GDPR
- Data processing agreement countersigned on request (/dpa). Results files deleted 7 days after a list is submitted; confirmed results cached by address for 14 days. Lists are not used for marketing, sold or shared. Verification runs on a US server. No GDPR certification is claimed.
- What it does not do
- No sending, warmup or inbox placement tests. No published accuracy benchmark against other verifiers. Catch-all domains, Yahoo and AOL cannot be confirmed, and Outlook.com and Hotmail mailboxes are not probed while Microsoft refuses checks from our server's network: all of these come back risky, never valid.
SimpleVerifier facts from our pricing page and product. Last updated .
Related questions
- Can I cancel a monthly plan?
- SimpleVerifier's plans are month to month and cancel anytime. Other vendors set their own terms, and some give their lowest prices only on annual commitments.
- What if my volume changes each month?
- Price your busiest month and your quietest. A flat plan covers the busy one at the same price; credits you do not use may expire, so check the expiry terms.
Sources
- Email verification credits vs a monthly plan: how to work out which costs less (SimpleVerifier)
- Email verification pricing index, 1 and 2 October 2026 (SimpleVerifier study, CSV included)
Figures marked as ours come from SimpleVerifier’s own dated tests on made-up addresses, published with their data on the research page. No customer data is used, and we publish no accuracy percentage because we have no independent measurement to back one.
Do it now
Test it on a real address first
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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