Alternatives · Deliverability
Mails.so alternatives
As of Nov 13, 2026, the highest-graded Mails.so alternative is ZeroBounce (2.4 GPA). It's also the best free one.
Mails.so compared with 5 alternatives: ZeroBounce, NeverBounce, Emailable, MillionVerifier and Reacher.
Mails.so is a paid product with a free trial, starting at €48 per month for 10,000 validations, shown in euros. 2 of the 5 alternatives are free or have a free plan. 3 more offer a free trial.
Listings checked up to Nov 13, 2026 · Where the facts come from
Black Friday: is there a Mails.so sale?
At a glance
| Tool | Price | Free plan | Runs on |
|---|---|---|---|
| Mails.soThis tool | Free trial · from €48/mo | Trial only | Web |
| ZeroBounce | Free plan · from $39 one-time | Yes | Web, iOS |
| NeverBounce | Free trial · from $8 one-time | Trial only | Web |
| Emailable | Free trial · from $38 one-time | Trial only | Web |
| MillionVerifier | Free trial · from $39 one-time | Trial only | Web |
| Reacher | Free | Free | Web |
How each one differs from Mails.so
ZeroBounce
Email list verification with warm-up and DMARC monitoring in one plan
- ZeroBounce starts at $39 one-time for 2,000 verification credits.
- ZeroBounce has a free plan, which Mails.so lacks.
- ZeroBounce also lists an iOS app.
- ZeroBounce also covers inbox warm-up and dMARC.
Suits: Marketers cleaning large lists before a campaign
NeverBounce
Email list cleaning and real-time verification, now part of ZoomInfo
- NeverBounce starts at $8 one-time for 1,000 credits.
Suits: Marketers who clean a list before an occasional send
Emailable
Email list verification with inbox reports and blacklist monitoring
- Emailable starts at $38 one-time for 5,000 credits ($32.30 a month by subscription).
Suits: Marketers who want verification and placement tests on one credit balance
MillionVerifier
Low-cost bulk email verification with credits that never expire
- MillionVerifier starts at $39 one-time for 10,000 credits.
Suits: Senders cleaning large lists on a tight budget
Reacher
Open-source email verification engine with an HTTP backend
- Reacher is free.
- Reacher has a free plan, which Mails.so lacks.
- Reacher is open source and self-hostable, according to its own site.
Suits: Developers who want to run their own verifier
Limits worth knowing in Mails.so
- Prices were read in euros; a US dollar view could not be read, so the dollar price is unconfirmed.
- The 90% first-month discount applies to the first month only; the plan then renews at full price.
- The free allowance is a one-time 50 credits, not a monthly free plan.
- Only the three paid plans were listed; there is no separate pay-as-you-go pack on the page.
Common questions
What are the alternatives to Mails.so?
The alternatives to Mails.so in this directory are ZeroBounce, NeverBounce, Emailable, MillionVerifier and Reacher. Each one has a side-by-side comparison with Mails.so.
Is there a free alternative to Mails.so?
Yes. Reacher is free to use. ZeroBounce has a free plan alongside paid ones.
Which Mails.so alternatives work on iOS?
The Mails.so listing does not include an iOS app. ZeroBounce lists one.
Is there an open-source alternative to Mails.so?
Reacher is described as open source on its own site.
When were these prices checked?
Each listing shows its own date. On this page they run from Oct 18, 2026 to Nov 13, 2026. Vendors change prices without notice, so confirm on their site before you buy.