Apollo.io

Free Apollo.io Email List Verifier

Apollo.io is a sales intelligence and engagement platform with a massive B2B contact database, automated sequences, and built-in dialer for prospecting at scale.

Why verify your Apollo.io email list

Apollo.io sequences send to contacts pulled from a database of millions, but not every email in that database is still active. Bounced emails in your sequences tank your domain reputation fast, making future cold outreach land in spam. Verifying before launching a sequence protects your sending domain and keeps your outreach hitting real inboxes.

shield
Protect your sending domain
Apollo sequences can burn through hundreds of emails daily. One bad batch of contacts can spike your bounce rate and get your domain flagged by Google or Outlook.
bolt
Maximize sequence performance
Every bounced email in an Apollo sequence is a wasted step. Verified contacts mean every touchpoint in your cadence reaches a real person.
savings
Save Apollo credits
Apollo charges credits per contact. Spending credits on invalid emails wastes your plan quota and inflates your cost per reply.
analytics
Get real engagement data
Bounces and dead addresses distort your open and reply rates. Clean lists give you accurate Apollo analytics to optimize your sequences.

Skip the download-upload dance

Truelist connects directly to popular platforms. Validate your lists in place — no file exports, no re-imports.

What we check for

Every email in your Apollo.io list gets a comprehensive validation across multiple risk factors.

check Syntax and formatting errors
check Domain existence and DNS records
check MX record availability
check Disposable email detection
check Role-based address detection
check Catch-all domain handling
check Mailbox existence via SMTP
check Known spam traps and honeypots

How to verify your Apollo.io list

Three simple steps to clean your Apollo.io email list and improve deliverability.

1

Export contacts from Apollo

Go to your People list in Apollo, select the contacts you want to verify, click Export, and download as CSV.

2

Upload to Truelist

Drop your Apollo CSV file into Truelist and we will verify every email address in seconds.

3

Import verified contacts

Download your clean list from Truelist and import it back into Apollo, or remove the invalid contacts from your existing lists.

Other integrations you might like

Verify email lists from other popular platforms.

Frequently asked questions

Can't find the answer you're looking for? Reach out to our customer support team.

Does Apollo.io verify emails?
Apollo has a basic email status indicator, but it does not run real-time SMTP-level verification. Many emails marked as "verified" in Apollo still bounce. Truelist checks each address at the mailbox level for accurate results.
How do I export prospects from Apollo.io?
In Apollo, go to People or any saved list. Select the contacts you want, click the Export button in the top toolbar, choose CSV format, and download the file.
Will verifying improve my Apollo.io deliverability?
Yes. Removing invalid emails before running sequences prevents bounces that damage your domain reputation. Lower bounce rates mean better inbox placement for all your Apollo outreach.
How often should I verify my Apollo.io lists?
Before every new sequence launch, especially if contacts were sourced more than 30 days ago. B2B email addresses decay at roughly 30% per year as people change jobs.
Can I verify Apollo.io contacts in bulk?
Yes. Export your full contact list from Apollo as a CSV and upload it to Truelist. We handle lists of any size and return results within minutes.

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