ZeroBounce alternative
The mailbox check,not the whole suite.
ZeroBounce is the category leader for a reason: validation plus finder, warmup, placement tests, and activity data. If you only need to know whether an address is safe to send, you are paying for a bundle. NexiphorVerifier does the SMTP probe, keeps catch-alls Risky, and refunds Unknowns. Start free, then buy credit packs in the dashboard — ZeroBounce ONE is $99/month for 10,000 plus the suite (as of 17 Aug 2026).
Public prices as of 17 Aug 2026. Nexiphor in EUR. ZeroBounce in USD. We do not invent accuracy percentages.
Pick ZeroBounce if
- You want inbox placement tests, warmup, blacklist/DMARC monitors, or Email Finder in one vendor.
- You buy activity / “gold contact” enrichment with verification.
- You already live in their UI and the suite pays for itself.
Pick Nexiphor if
- You clean cold lists or verify at signup and do not need a deliverability suite.
- Catch-alls painted Valid have burned your domain before.
- You want to start free and buy credits when you need volume, with Unknown results not charged.
How you pay
Nexiphor: free start, then credit packs in the dashboard. ZeroBounce ONE $99 for 10,000 plus finder, placement, warmup. Pricing as of 17 Aug 2026.
Catch-alls
We keep catch-all domains Risky with a confidence score. We will not mark them Valid to inflate the list.
Unknowns
If the probe cannot reach a verdict, that credit comes back automatically. ZeroBounce also markets Unknown as free — this is not a unique slogan. Ours is in the credit ledger.
ZeroBounce wins on breadth. They market Unknown results as free and 99.6% accuracy — we do not invent a competing percentage. We win if you want SMTP evidence without buying the suite.