Smartlead Email Verification
Verify your lists before loading them into Smartlead. Connect your Smartlead account, verify every email address, and push clean results back, all automatically.
Smartlead is a cold email and outreach platform with unlimited mailboxes and warmup. Mailthentic integrates directly with Smartlead to help you verify and clean your contact database without CSV exports or manual work.
How It Works
Four steps to a clean Smartlead database.
Connect Smartlead
Paste your API key once to connect. No password sharing.
Import contacts
Pull contacts or lists from Smartlead. Duplicates are removed automatically.
Verify every email
Each address runs through the 9-point engine including SMTP mailbox confirmation, catch-all and disposable detection.
Push results back
Clean results sync back to Smartlead. Invalid contacts are tagged so you can exclude them from campaigns.
Why Verify Your Smartlead Contacts
Protect your mailboxes
Bounces damage the sending mailboxes and domains Smartlead rotates through.
Better deliverability
A clean list keeps bounce rates low and outreach in the inbox.
Avoid blacklisting
Remove spam traps and invalid addresses before they get you listed.
Bulk or API
Verify lists in bulk before import or via the API.
Frequently asked questions
How does Mailthentic connect to Smartlead?
Does verification send emails to my contacts?
How much does it cost?
More Integrations
Clean your Smartlead contacts today
Start with 1,000 free verification credits. No credit card required.