MailSure

Email verification pricing, compared

What it costs to verify 1,000, 10,000 and 100,000 email addresses with one-off credits. All prices in US dollars, read from each vendor's own pricing page on 6 November 2026.

Pay as you go1,000 emails10,000 emails100,000 emailsPer 1,000 at 100,000
MailSure$4$20$100$1
ZeroBouncemin. 2,000: $39$129$649$6.49
NeverBounce$8$50$400$4
Bouncer$8$60$400$4
MillionVerifiermin. 10,000: $39$39$149$1.49
Emailablemin. 5,000: $38$60$420$4.20

Where a vendor does not sell that volume on its own, the table shows its smallest purchase instead. Vendors change prices, so check their pages before you buy.

The details that change the real cost

Free allowanceDo credits expire?Unknown results
MailSure100 free verifications every monthCredit packs never expireUnknown results are never billed
ZeroBounce100 free verifications a monthNever expire with a ZeroBounce ONE subscription; otherwise “expiration rules may apply”Unknown results are free
NeverBounceFree test credits and a free list analysisCredits expire 12 months after purchaseNot stated on the pricing page
Bouncer100 free credits to startCredits never expireUnknown results and duplicates are never charged
MillionVerifier100 free creditsCredits never expireA refund policy for risky emails
Emailable250 free creditsCredits never expireCredits spent on unknown results and duplicates are returned

A free allowance that renews every month and credits that never expire both lower what you actually spend. Unknown results are addresses a server would not confirm either way, so being billed for them raises the real price per usable result.

Subscriptions

Price is not the only thing to weigh

Some vendors on this page bundle extra tools such as inbox placement tests, blacklist and DMARC monitoring, an email finder, or deep CRM integrations. If you use those, a bundled subscription can be worth more than a lower per-email price. MailSure does one job: it checks whether an address is real and safe to send to, through a single check, a CSV upload, an API or a WordPress plugin. Read each comparison for what the other vendor does better.

Sources