Verify lead emails before cold outreach
MailTester Ninja
Check the email addresses of scraped or purchased leads before you load them into your outreach tool. Invalid and disposable addresses are flagged, catch-all domains are marked risky, and the results keep the order of your list so they merge back into your lead sheet easily.
Input
Output fields
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The MailTester Ninja Email Verifier Actor is ready to run with the inputs already set for "Verify lead emails before cold outreach". Sign up or log in and you'll land in Apify Console with a copy of this exact task.
Start the "Verify lead emails before cold outreach" task
The MailTester Ninja Email Verifier Actor will start running based on the input automatically. You can also change all the input fields, like email addresses, to match your specific use case.
Receive the "Verify lead emails before cold outreach" output
Monitor the progress in real time. You will be notified as soon as your dataset is complete and ready for review. Each result includes data such as #, email, result, and more.
Integrate into your workflow
The final output is delivered in JSON, CSV, or Excel format, ready to be plugged into your workflow. You can also run the "Verify lead emails before cold outreach" task via API.
This task takes a list of addresses: copy the email column of another Actor's results into its input, or start it from the Apify API once your lead scraper has finished.
This task marks a lead risky when its domain accepts every address (catch-all) or answers with a temporary refusal. No tool can confirm a mailbox on a catch-all domain, so decide by risk or check again later.
This task adds no charge of its own: you only pay the Apify usage of the run, which stays tiny. It needs a MailTester Ninja key, either a free API token (50 checks a day) or a plan from $6.99 a week for 100,000 checks a day.
Without a MailTester Ninja key, this task only checks its three sample addresses so you can see the output. Add your key in the input to verify your own list.