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Apollo Email Verification Integration
Clean your Apollo contacts with Mailthentic to cut bounces and protect sender reputation. A native Apollo connector is available on request, and you can verify your list today.
Native connectors are built on request for customers on a paid plan.
Why verify your Apollo lists
Apollo contacts come from a database that ages every day as people change jobs and companies shut down domains. Sequencing those records without verification produces hard bounces on cold traffic, which is exactly the pattern spam filters and blacklists watch for. One bad Apollo export can put your sending domain on a blocklist and take your whole outbound program offline.
Apollo is a B2B sales intelligence and engagement platform with a large contact database, prospect search and built-in email sequencing. Database records go stale fast, and stale records bounce.
How Apollo verification works
Verify your Apollo list today in three steps.
Export your Apollo contacts as a CSV
In Apollo, select the saved search, list or sequence audience you want to clean, and export those contacts as a CSV.
Upload the CSV to Mailthentic's bulk verifier
Drop the file into the bulk verifier. Every address is checked for syntax, domain and MX validity, disposable and catch-all domains, role accounts and risk.
Download the clean list and import it back into Apollo
Import only the verified prospects into your sequence. Want to skip the CSV round trip? Paid customers can request a native Apollo integration and our team builds it for you.
Want to skip the CSV step? Request the native Apollo integration and our team builds it for you.
Benefits for Apollo users
Protect your sending domain from blacklisting
Cold outreach with a high bounce rate is a classic blacklist trigger. Verify Apollo exports first and you never hand spam filters that signal.
Fewer hard bounces on cold sequences
Apollo records go stale as prospects change jobs. Verification removes dead mailboxes before your first touch.
Keep your mailboxes out of the penalty box
Sending mailboxes get throttled or suspended after bounce spikes. Clean lists keep your outbound infrastructure healthy.
Save sequence and send credits
Every step sent to a dead address burns Apollo credits and sending capacity for zero pipeline in return.
Better inbox placement for real prospects
Lower bounce rates lift domain reputation, which means the prospects who do exist actually see your message.
GDPR aligned processing
Verification runs under a GDPR aligned process with a DPA available on request, which matters for B2B prospecting in Europe.
What Mailthentic checks
Every Apollo contact runs through the full verification stack.
Syntax validation
Catches malformed and pattern-guessed addresses that databases generate from first name and last name rules.
Domain and MX record checks
Confirms the company domain still exists and still accepts mail, which is the first thing that breaks when a business folds.
Disposable email detection
Flags throwaway domains that appear in scraped and contributed data, so they never enter an Apollo sequence.
Catch-all domain detection
Many corporate domains accept everything. Mailthentic flags them so you can route them to a low-risk sequence instead of your main one.
Role-based address flagging
Marks info@, admin@ and support@ addresses. These generate complaints in cold outreach and rarely reach a decision maker.
Risky and invalid address detection
Separates confirmed dead mailboxes from risky ones so your cold sequences only run against addresses worth the reputation risk.
Apollo use cases
Cleaning an Apollo export before a cold sequence
Verify every prospect before the first email so a stale database export never turns into a bounce spike.
Protecting a new sending domain
A freshly warmed domain has no reputation buffer. Only send verified Apollo contacts while it builds trust.
Qualifying bought or enriched data
Enrichment guesses addresses from patterns. Verification tells you which guesses are real before you spend a sequence on them.
Refreshing an aging prospect list
Re-verify Apollo lists you saved months ago, because job changes have already made part of that list undeliverable.
Frequently asked questions
Is there a native Apollo integration?
How do I verify my Apollo list today?
Why do bounces matter so much on cold outreach?
What happens with catch-all corporate domains?
Is my prospect data safe?
How do credits work?
Clean your Apollo list today
New accounts get 1,000 free verification credits. CRM integrations are included with any paid plan.