Used For

• +**Your email bounce rate is over 5% and your ESP is threatening to suspend you** → Real-time verification catches typos and fakes at signup, keeps your sender reputation clean
• +**You're sending campaigns to 10,000 emails but only 6,000 actually exist** → Bulk list cleaning removes dead addresses, disposable emails, and spam traps before you send
• +**Fake signups are poisoning your user metrics and wasting ad spend** → Blocks temporary emails and catch-all domains that accept anything
• +Sendex Score rates email quality 0-10 - tells you which addresses are worth keeping vs deleting
• +Connects to signup forms and CRMs - automatically verifies emails as people enter them

Best For

• >Your signup forms are flooded with fake emails and your bounce rate is embarrassing
• >Marketing campaigns hit spam folders because your list is full of dead addresses
• >You're manually scrubbing email lists and want those hours back

Not For

• -Solo businesses verifying under 1,000 emails per month — the pricing doesn't make sense at that scale
• -Teams wanting a free solution — there's no permanent free tier, just trials
• -Anyone expecting instant results on bulk jobs — SMTP checks can be slow on some domains

Pairs With

• *Mailchimp (cleans your lists before campaigns so you don't get flagged for high bounces)
• *HubSpot (verifies emails as leads enter your CRM instead of finding out they're fake later)
• *Klaviyo (ensures your e-commerce email flows reach real customers, not bot signups)
• *Typeform (catches typos on lead forms before bad data enters your sales pipeline)
• *Zapier (automatically runs verification when new emails hit your spreadsheets or databases)

The Catch

• !Pay-as-you-go pricing starts small but adds up fast if you're processing lots of emails
• !Sometimes flags perfectly good Gmail addresses as 'low quality' because they're free emails
• !SMTP verification occasionally times out on slower mail servers, which can hold up bulk processing jobs

Bottom Line

Stops your marketing emails from bouncing into the void because half your list is fake Gmail accounts and typos.