lemlist Email Verification: Clean Your Outreach Lists | Mailthentic
Mailthentic
lemlist Integration

lemlist Email Verification

Verify lemlist prospects before your campaign. Connect your lemlist account, verify every email address, and push clean results back, all automatically.

lemlist is a sales engagement platform for personalized cold outreach and multichannel sequences. Mailthentic integrates directly with lemlist to help you verify and clean your contact database without CSV exports or manual work.

How It Works

Four steps to a clean lemlist database.

1

Connect lemlist

Paste your API key once to connect. No password sharing.

2

Import contacts

Pull contacts or lists from lemlist. Duplicates are removed automatically.

3

Verify every email

Each address runs through the 9-point engine including SMTP mailbox confirmation, catch-all and disposable detection.

4

Push results back

Clean results sync back to lemlist. Invalid contacts are tagged so you can exclude them from campaigns.

Why Verify Your lemlist Contacts

Protect your sending domain

Outreach to invalid prospects bounces and hurts your domain reputation.

Higher reply rates

Reaching only valid prospects lifts connect and reply rates.

Cleaner campaigns

Remove invalid addresses before they enter your sequences.

Bulk or API

Verify lists before import or check addresses via the API.

Frequently asked questions

How does Mailthentic connect to lemlist?
Mailthentic connects to lemlist securely, imports your contacts, verifies every address with the 9-point engine, and writes clean results back. You never share your lemlist password.
Does verification send emails to my contacts?
No. Verification uses DNS lookups and SMTP handshakes to confirm a mailbox exists without delivering any message, so your contacts are never emailed.
How much does it cost?
The integration is free. You pay only for verification credits used, one credit per unique address. Every new account starts with 100 free credits, no credit card required.

Clean your lemlist contacts today

Start with 1,000 free verification credits. No credit card required.