What is MillionVerifier?
MillionVerifier is an email verification service that checks whether addresses on a list are safe to send to before you launch a campaign. It sorts each address into good, risky or bad, so you can remove invalid contacts, disposable inboxes and role-based addresses that hurt deliverability. The service is known for low per-email pricing and one-time credit purchases rather than monthly subscriptions, which makes it popular with cold email senders and small marketing teams.
The company behind it, Southern Vector Limited, is registered in Christchurch, New Zealand. Besides bulk list cleaning, MillionVerifier offers a single-address checker, a REST API for real-time checks on sign-up forms, and EverClean, a feature that verifies new contacts inside a connected email marketing account every day. Catch-all domain checks are included at no extra charge.
MillionVerifier at a glance
How does MillionVerifier work?
- Create a free account
Sign up without a credit card and receive 100 free credits to test the service.
- Upload or connect a list
Upload a CSV, TXT or XLSX file, or connect an email service provider through one of the built-in integrations.
- Run verification
The system checks each address and labels it as good, risky or bad.
- Download and clean
Export the results and keep only the addresses you want to send to, or let EverClean keep a connected list clean automatically.
MillionVerifier key features
Bulk list cleaning
Verify large, older lists from uploaded files and download sorted results.
Real-time API
A REST API checks addresses at the point of signup with low latency.
Single email checker
Check one address at a time from the dashboard, with free checks available.
Catch-all verification
Addresses on catch-all domains are checked without extra cost.
Disposable and role-based detection
Flags temporary inboxes and generic addresses like info@ or sales@.
EverClean
Automatically verifies new contacts added to a connected email marketing account each day.
Risky-email refund
Credits are returned for addresses the service cannot verify with certainty.
Why use MillionVerifier?
- Reduce bounce rates before a campaign so your sender reputation stays healthy.
- Pay once for credits that do not expire, which suits irregular sending schedules.
- Check new signups in real time through the API to stop bad data at the source.
- Connect directly to common email platforms instead of exporting and importing files.
- Keep costs low on very large lists thanks to volume-based credit pricing.
Who is MillionVerifier best for?
A good fit for
- Cold email senders who clean lead lists before outreach
- Small businesses that send newsletters a few times a year
- Agencies verifying lists for several clients
- Developers adding email checks to sign-up forms
Less suited to
- Teams that want warm-up, inbox placement tests or DMARC monitoring in the same tool
- Buyers who need detailed engagement or activity data on each contact
MillionVerifier pricing
| Pricing model | Usage-based |
|---|---|
| Free plan | No |
| Free trial | 100 free credits |
| Starting price | From $39 one-time credit purchase |
Credits are bought in one-time packs and never expire, with the per-email cost falling as pack size grows. The site also advertises bonus credits for large purchases and auto top-up.
Prices checked October 2026. Vendors change plans often, so confirm on the official MillionVerifier pricing page before you buy.
MillionVerifier pros and cons
Pros
- Very low cost per verification on large lists
- Credits do not expire
- Catch-all checks included at no extra cost
- Wide range of one-click email platform integrations
Cons
- Focused only on verification, with no deliverability suite
- Risky results still need a judgment call on whether to send
MillionVerifier integrations and platforms
Works with
Available on
MillionVerifier alternatives
See the full shortlist in Best Email Verification Tools.
MillionVerifier FAQ
Is MillionVerifier free?
MillionVerifier is not free for ongoing use, but new accounts receive 100 free credits without a credit card. That is enough to test a small sample list or try the single email checker. After that, you buy one-time credit packs, starting from $39 on the official pricing page. Credits never expire, so you can use them whenever you need to clean a list.
What is MillionVerifier used for?
MillionVerifier is used to clean email lists before sending campaigns. It removes invalid, disposable and role-based addresses and flags risky ones, which helps lower bounce rates and protect sender reputation. Marketers use it for newsletters and cold outreach, while developers use its API to verify addresses in real time on sign-up forms.
Do MillionVerifier credits expire?
No. According to the official site, credits bought on MillionVerifier never expire. This is useful for businesses that only clean lists occasionally, such as before a seasonal campaign or a new outreach push. You can buy a larger pack at a lower per-email rate and draw it down over months without losing unused credits.
MillionVerifier vs ZeroBounce: what's the difference?
Both tools verify email lists, but they target different needs. MillionVerifier focuses on low-cost verification with one-time credits that never expire. ZeroBounce adds a wider deliverability suite, including email scoring, warm-up, inbox placement tests, blacklist monitoring and DMARC tools, with a subscription option. Choose MillionVerifier for cheap bulk cleaning and ZeroBounce for broader deliverability work.
Does MillionVerifier integrate with Mailchimp?
Yes. MillionVerifier lists Mailchimp among its one-click integrations, alongside HubSpot, ActiveCampaign, MailerLite, SendGrid and others. You can pull a list straight from your Mailchimp account, verify it, and use EverClean to keep new contacts checked automatically, which removes the need to export and re-import CSV files.
Sources
This overview is based on MillionVerifier's official website and documentation, checked October 2026.