Starter $9 or Pro $39: Which Email Verification Plan Fits Your List?

If you verify fewer than 2,500 addresses a month and only through CSV uploads, Starter at $9 a month is the plan that fits. If you need more than that, an API, the email finder, or you re-check lists often, Pro at $39 a month is the plan that fits. Both run the same mailbox checks. What changes is volume, access and file size, so the right choice comes from your own month, not from which plan sounds bigger.

This post is for someone who has already decided to verify and is looking at the plan cards. It goes through what each plan includes, how to size your month, and the cases where neither monthly plan is the cheapest option. Where another approach costs less, we say so.

What each plan includes

These come from the plan definitions SimpleVerifier uses at checkout, so they match the pricing page today.

	Starter	Pro
Price	$9 a month	$39 a month
Email verification	2,500 emails a month	The first 100,000 checks a month at full speed, then slower, never cut off
Real SMTP mailbox checks	Yes	Yes
Catch-all, disposable and role-address detection	Yes	Yes
CSV upload	One email per unique address	Up to 100,000 rows
Duplicates and addresses we cannot check	Free	Duplicates free
API and MCP	No	10,000 calls a month included, then $1.50 per 1,000
Email finder and website enrichment	No	Yes
Phone format checks	No	Yes (format and number type from the numbering plan, not a live line check)
Unused allowance	Resets monthly, no rollover	Fair use, no hard cap

Two lines in that table are worth reading twice.

Starter's 2,500 is a ceiling that resets, not a bank. Unused emails do not roll over, so a month where you verify 200 addresses costs the same $9 as a month where you verify 2,400.

Pro's volume is stated, not implied. "Never cut off" does not mean every list runs at the same speed forever. The first 100,000 checks a month run at full speed. After that, lists keep running in a slower lane. They are not refused. We explain how the slower lane behaves in what happens when you hit your verification limit.

How to size your month

Count addresses, not lists. A list of 1,800 rows is one list, but it is also 1,800 checks of your 2,500. Work out your month in four steps.

1. Count the unique addresses you will verify in a typical month. Remove duplicates first; they are free on SimpleVerifier but they inflate your count when you estimate. The email list cleaner does a free pre-pass for duplicates, blanks and obvious junk.
2. Count your busy month, not only your average. Cold email arrives in bursts. If you scrape or buy a 20,000-row file once a quarter, your average month looks small and your busy month does not fit Starter.
3. Add re-checks. An address verified in January can be dead by March. If you re-check a standing list each month, that list counts every time. Results are cached for 14 days, so an overlapping list inside that window is not billed again, but a re-check after that is.
4. Decide whether anything will call the API. If a signup form, a sequencer workflow or an AI agent needs to check an address on its own, Starter cannot do it. That alone makes it Pro.

If steps 1 to 3 land under 2,500 in your busiest month and step 4 is no, Starter fits.

When Starter is the right buy

• A small outbound motion. A founder sending to a few hundred prospects a week, verifying each batch before it goes into the sequencer.
• A newsletter or store list. A small list you clean once a month before a campaign.
• A consultant with a handful of clients. Each client list is a few hundred rows.
• Someone testing whether verification pays off. At $9 it is a cheap way to find out how many bounces you were about to take.

For all of these the main job is "upload a CSV, download valid, risky and invalid". The bulk email checker and the verify page are the interface. You do not need Pro's extras and should not pay for them.

When Pro is the right buy

• Your list is bigger than 2,500. A single 10,000-row scrape does not fit Starter. At full speed the first 100,000 a month run on Pro with room to spare; see what 50,000 verifications a month costs for the sum against credits.
• You want the API or MCP. Pro includes 10,000 calls a month. Our pricing for developers goes through what a call is and when you would pay for extras. The API docs and MCP docs have the endpoints.
• You find emails as well as check them. The finder turns a name and company into a verified address. Starter has no finder.
• You verify often. If you run a new list through every week, the monthly count adds up faster than you expect.
• You want to stop counting. On Pro you do not watch a meter against a 2,500 allowance. Within the 100,000 at full speed, there is nothing to ration. That is the practical meaning of a flat plan, and it is why flat-rate plans suit teams who verify a lot.

Where Starter and Pro are not the cheapest option

Be honest about this part, because it decides the purchase for many people.

If you verify one list a few times a year, a monthly plan can lose to a pay-as-you-go pack. A monthly plan charges for months where you do nothing. Some vendors sell credit packs that do not expire, and for a once-a-quarter 5,000-row clean, a pack can cost less than three months of any subscription. We do not print other vendors' prices here because they change; read each vendor's own pricing page on the day you buy. The credits vs monthly plan calculator works the break-even from numbers you type, and the email verification cost calculator does the same for your list size.

If you only need a few single addresses checked, you may not need a plan at all. The free email checker takes single addresses with no account, five a minute, and a Google sign-in gives you 100 free checks on a list.

If you want a second opinion on a risky slice, you may keep a pay-as-you-go account at another vendor for it. We cover that in should you use two email verifiers?.

The decision in one pass

• Under 2,500 unique addresses in your busiest month, CSV only: Starter, $9.
• Over 2,500 in any month, or you need the API, MCP, finder or enrichment: Pro, $39.
• A big list once or twice a year and nothing else: compare a one-off pack first. A monthly plan may not pay back.
• A team sharing lists and keys, or many client lists: look at the higher plans. We compare them for agencies in Pro or Agency for client lists.

Try the output before you choose

The 100 free checks use the same mailbox check as the paid plans, so you can see exactly what you would get. Take a spread of 100 from your real list, not the cleanest rows, and read the risky ones: a pile of risky rows on one company domain usually means a catch-all, and catch-all domains need their own rule. Sign in with Google on the verify page and upload.

If the result is what you expected and your month fits under 2,500, start on Starter. If it does not fit, Pro is $39 a month with the first 100,000 checks at full speed, then slower, never cut off. Both are on the pricing page.