A ZeroBounce alternative: MailSure vs ZeroBounce
MailSure costs 84% less than ZeroBounce for 10,000 verifications and 85% less for 100,000, based on each vendor's published one-off prices on 6 November 2026.
| Pay as you go | 1,000 emails | 10,000 emails | 100,000 emails | Per 1,000 at 100,000 |
|---|---|---|---|---|
| MailSure | $4 | $20 | $100 | $1 |
| ZeroBounce | min. 2,000: $39 | $129 | $649 | $6.49 |
ZeroBounce prices from its pricing page, read 6 November 2026, in US dollars. Vendors change prices, so check before you buy.
Why teams choose MailSure over ZeroBounce
- Price: $20 vs $129 for 10,000 emails (84% less), and $100 vs $649 for 100,000 emails (85% less).
- Small jobs: ZeroBounce sells at least 2,000 credits at a time ($39); a MailSure pack of 1,000 is $4.
- A free allowance that renews: every account gets 100 free verifications every month, with no card.
- Packs never expire, and unknown results are never billed.
- A single check, CSV upload, REST API and a WordPress plugin are included from the first purchase, with no sales call.
Free allowance, expiry and unknown results
| Free allowance | Do credits expire? | Unknown results | |
|---|---|---|---|
| MailSure | 100 free verifications every month | Credit packs never expire | Unknown results are never billed |
| ZeroBounce | 100 free verifications a month | Never expire with a ZeroBounce ONE subscription; otherwise “expiration rules may apply” | Unknown results are free |
Subscriptions: ZeroBounce ONE from $99 a month (minimum 10,000 credits). MailSure plans start at $15 a month for 10,000 verifications.
Where ZeroBounce is the better choice
Choose ZeroBounce if you want email verification bundled with deliverability monitoring and warm-up tools in one subscription. From its own pricing page, ZeroBounce also offers:
- Inbox placement tests, blacklist and DMARC monitoring and warm-up tools in the same account
- An email finder
- A stated 99.6% validation accuracy guarantee
MailSure focuses on one job: telling you whether an address is real and safe to send to. If that is what you need, you are not paying for the rest.
Frequently asked questions
- Is MailSure cheaper than ZeroBounce?
- On one-off credits, yes at the volumes we compared: $20 vs $129 for 10,000 emails (84% less); $100 vs $649 for 100,000 emails (85% less). ZeroBounce figures were read from https://www.zerobounce.net/pricing on 6 November 2026 and can change.
- Do ZeroBounce credits expire?
- Never expire with a ZeroBounce ONE subscription; otherwise “expiration rules may apply”. MailSure credit packs never expire.
- Does ZeroBounce charge for unknown results?
- Unknown results are free. MailSure never bills unknown results.
- Can I try MailSure before paying?
- Yes. Check an address on the home page with no account, or create a free account for 100 verifications every month.