Case Study: Sales Team Improves Cold Outreach | Mailthentic
Mailthentic
Sales

How a sales team improved cold outreach deliverability

A representative scenario showing how a sales team verified prospect lists before outreach to protect their domain and lift reply rates.

20%+ to <2%

bounce rate

Protected

sending domain

Higher

reply rates

The challenge

Sourced and aged prospect lists carried 20 to 40% invalid addresses. Sending cold outreach to them caused hard bounces, triggered spam filters, and threatened to get the team's sending domain blacklisted, hurting deliverability for everyone.

The solution

The team verified every prospect list before the first send, removing invalid, catch-all and disposable addresses, and used the confidence score to prioritize the most reachable contacts.

Frequently asked questions

Does verification contact prospects?
No. It confirms a mailbox exists using DNS and SMTP without delivering any message, so prospects are never emailed during the check.

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