If you’re still relying on free, bulk email verifiers that hurt your sender reputation, it’s time to look deeper. Here’s how Semrush functions as an email account checker and why it matters for your domain’s deliverability.
You cannot paste 10,000 emails into Semrush directly. But here’s the approved workflow for B2B marketers:
| Approach | Free Checker | Dedicated Verifier | Semrush Method | |----------|--------------|--------------------|----------------| | Validates mailbox | ❌ Often fakes it | ✅ Yes | ⚠️ Only via Lead Gen | | Checks domain health | ❌ No | ❌ No | ✅ Yes | | Protects sender rep | ❌ No | ✅ Yes | ✅ Yes (indirectly) | | Cost per 1,000 emails | Free (risky) | $4–$10 | Included in Semrush sub |