Sealch Reviews and Details

Questions & Answers

1. What makes Sealch unique?

   Price. We run the same SMTP verification technology as premium tools — connecting to recipient mail servers, checking RCPT TO responses, detecting catch-all domains — but at a fraction of the cost. Our PAYG rate starts at $0.35 per 1,000 emails while competitors charge $5-8 for the same check. We also never charge for unknown results. If we can't verify an address, you don't pay. Most competitors still deduct a credit for unknowns.

2. Why should a person choose Sealch over its competitors?

   Three reasons. First, cost: verifying 100,000 emails on Sealch costs $49. The same batch on ZeroBounce costs $750. Same SMTP checks, same accuracy, dramatically less money. Second, transparency: unknown results are free, PAYG credits never expire, and there are no hidden fees or per-seat charges. Third, simplicity: paste a list, click scan, download clean results. No onboarding calls, no sales demos, no enterprise negotiations. Free 7-day trial with 100 verifications per day, no credit card needed.

3. How would you describe the primary audience of Sealch?

   B2B sales teams, cold email agencies, and growth marketers who verify email lists before outbound campaigns. Typically small to mid-size teams running cold outreach through tools like Instantly, Smartlead, Lemlist, or Apollo. They care about keeping bounce rates under 2% to protect their sender reputation but don't want to spend hundreds of dollars on list cleaning every month.

4. What's the story behind Sealch?

   We were spending over $500/month verifying cold email lists using premium verification tools. The technology behind email verification — SMTP RCPT TO checks — is straightforward and costs almost nothing to run at the infrastructure level. But existing tools charge $5-8 per 1,000 emails because the market accepted those prices. We built our own verification infrastructure from scratch, ran it on dedicated servers with intelligent IP rotation, and launched Sealch Pro to pass the cost savings directly to users. No VC funding, no bloated team — just lean infrastructure and honest pricing.

5. Who are some of the biggest customers of Sealch?

   B2B sales agencies running high-volume cold outreach campaigns Lead generation firms cleaning Apollo and LinkedIn exports before sending Digital marketing agencies managing email lists across multiple clients Recruitment agencies verifying candidate and client email databases SaaS startups running outbound sales with lean budgets

6. Which are the primary technologies used for building Sealch?

   Sealch is built on a custom SMTP verification engine running on dedicated infrastructure. The backend is Node.js, the frontend is a custom single-page application, and everything is served behind Cloudflare. We manage our own verification infrastructure rather than reselling third-party APIs, which is how we keep costs low while maintaining 99.2% accuracy.