Comparison
VeriDock vs Mails.so
Both verify email addresses over SMTP. The differences are in what you pay once the free credits run out, how much the response tells you, and how the API treats developers.
5×
more free credits, and they renew monthly
$1.16
per 1,000 on Growth vs €1.96 on Business
13
reason codes so you can write real rules
| VeriDock | Mails.so | |
|---|---|---|
| Free tier | 250 verifications every month, recurring | 50 credits, one time |
| Entry plan | $9 / month for 5,000 | €48 / month for 10,000 (first month discounted) |
| Mid plan | $29 / month for 25,000 | €98 / month for 50,000 (first month discounted) |
| Cost per 1,000 on entry plan | $1.80 | €4.80 |
| Cost per 1,000 on mid plan | $1.16 | €1.96 |
| Overage | $1.00–$2.50 per 1,000, capped per key | €0.002–€0.005 per validation top-up |
| Credit rollover | 60 days on paid plans | Not stated |
| Unknown results | Never billed | Not stated |
| Result detail | 4 statuses, 13 reasons, score, checks object | Deliverable label with checks |
| Typo suggestions | Yes, corrected address returned | Not stated |
| Live SMTP check | Yes | Yes |
| Catch-all detection | Yes | Yes |
| Disposable detection | Yes, 60,000+ domains | Yes |
| Bulk lists | CSV upload, API array, NDJSON streaming | List upload |
| Webhooks | Signed, retried for 24 hours | Not stated |
| Test API keys | Yes, deterministic and free | Not stated |
| Spend caps per API key | Yes | Not stated |
| No-code | Zapier, Make, n8n | Zapier, Make |
| Email finder | No | Yes, on paid plans |
| Public API docs | Yes, no signup required | Requires account |
Mails.so details taken from mails.so public pages in October 2026. Prices shown in their listed currency. Mails.so is a trademark of its owner and is not affiliated with VeriDock.
Switching questions
Is this comparison fair?
We compared our own plans against the public pricing and feature pages on mails.so as of October 2026. Where their site does not state something, the table says so instead of guessing. If anything here is out of date, email us and we will fix it.
When should I pick Mails.so instead?
If you need an email finder alongside verification, or you want an unlimited-volume flat rate and are comfortable with €498 a month, Mails.so has options we do not offer today.
Can I migrate a list or integration from Mails.so?
Yes. Our single-verify endpoint has the same shape of inputs, and bulk jobs accept the same CSV you would upload there. Most teams swap the base URL and header and map status values in an afternoon.