ZeroBounce
Email verification and deliverability platform with additional data append features.
Tasks you can run with ZeroBounce on Deepline
ZeroBounce is wired into Deepline. 7 actions are available out of the box, runnable from the CLI or as a column step in an enrichment spreadsheet.
Quick start
deepline enrich --input leads.csv --output leads.enriched.csv --with 'result=zerobounce_activity_data:{"email":"{{email}}"}' --jsonAvailable actions
Zerobounce Activity Data
Check recent email engagement before re-engaging cold contacts.
deepline enrich --input leads.csv --output leads.enriched.csv --with 'result=zerobounce_activity_data:{"email":"{{email}}"}' --jsonZerobounce Api Usage
Get API usage statistics for a date range for reporting and budget tracking.
deepline enrich --input leads.csv --output leads.enriched.csv --with 'result=zerobounce_api_usage:{"start_date":"{{start_date}}","end_date":"{{end_date}}"}' --jsonZerobounce Batch Validate
Validate up to 100 emails in one call. Same per-email cost but fewer API round-trips.
deepline enrich --input leads.csv --output leads.enriched.csv --with 'result=zerobounce_batch_validate:{"email_batch":[{"email_address":"{{email_address}}"}]}' --jsonZerobounce Credits
Check remaining credit balance before large batch runs.
deepline enrich --input leads.csv --output leads.enriched.csv --with 'result=zerobounce_credits:{}' --jsonZerobounce Domain Search
Enumerate known email formats and patterns for a domain before constructing candidate addresses.
deepline enrich --input leads.csv --output leads.enriched.csv --with 'result=zerobounce_domain_search:{"domain":"{{domain}}"}' --jsonZerobounce Email Finder
Discover the most likely email pattern for a domain, with optional name personalization.
deepline enrich --input leads.csv --output leads.enriched.csv --with 'result=zerobounce_email_finder:{"domain":"{{domain}}"}' --jsonZerobounce Validate
Final email deliverability gate before outbound sends with detailed status and sub_status.
deepline enrich --input leads.csv --output leads.enriched.csv --with 'result=zerobounce_validate:{"email":"{{email}}"}' --jsonWhat people are saying about ZeroBounce
Real quotes from 4 cited sources across Reddit, HN, X, G2, and community forums.
“ZeroBounce offers 45+ native integrations and a well-documented REST API, making it one of the most connected verification tools available. Real-time verification for form validation is a strong use case with solid developer experience. For teams doing periodic list cleaning who also want deliverability monitoring in one place, the ZeroBounce ONE plan at $99/month bundles everything nicely. For pure high-volume verification only, dedicated tools like MillionVerifier or Bouncer run 2-5x cheaper per email.”
“In the 2026 Email Verification Benchmark, ZeroBounce lands in the top 3 with 96-98% accuracy in independent tests. The 99.6% claim on their site is marketing — real-world performance is slightly lower but still excellent. Accuracy and ease of use dominate the positive reviews, with users consistently highlighting fast list processing, clean result categorization, and detailed reports.”
“When tested against a controlled dataset of 1,222 real and fake contacts, ZeroBounce struggled with catch-all defenses, producing an 8% false positive rate while missing 30% of real buyers. For best results, pair ZeroBounce with a catch-all specialist or run a secondary verification pass on domains flagged as catch-all. The core verification engine is strong — it is the edge cases that need a layered approach.”
“Not all email validation APIs return the same level of insight. Our latest blog post compares Melissa vs ZeroBounce Email Validation APIs across validation accuracy, result transparency and performance. Learn why more granular validation details can make a difference.”
Share your experience with ZeroBounce
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Questions mentioning ZeroBounce
13 questions reference this provider.
How do I verify contact data is still valid before launching an outbound campaign?
“96-98% accuracy in independent tests”
What's the best way to handle catch-all emails in my outbound lists?
“Flags catch-all but leaves decision to sender”
I have setup a waterfall enrichment in clay. I have API for hunter > prospeo > snov and only these three providers were selected to find the emails but still clay has utilized the credits. Why?
“Credits are consumed during waterfall enrichment for several reasons: Email validation charges credits - Even when emails are found, validation through providers like ZeroBounce consumes additional cr”
I have setup a waterfall enrichment in clay. I have API for hunter > prospeo > snov and only these three providers were selected to find the emails but still clay has utilized the credits. Why?
“I have setup a waterfall enrichment in clay. I have API for hunter > prospeo > snov and only these three providers were selected to find the emails but still clay has utilized the credits. Why?”
How does the email validation waterfall process actually work?
“The email waterfall doesn't validate through all providers - it stops when a valid email is found. Multiple providers only run when the email found is invalid, causing the next provider to run until a”
How does the email validation waterfall process actually work?
“On the email validation waterfall, it works a bit differently by going through all validation providers even if the first one has been found.”
How does the email validation waterfall process actually work?
“That's not how our email waterfall works. The waterfall stops when a valid email is found - it doesn't continue to the next provider. Multiple providers only run when the email found is invalid, causi”
when I am using apollo x clay "Find people at company by job title" integration, I noticed that the email are already provided from apollo. How accurate is this email?
“Apollo gives you one data source. Our waterfall enrichment searches multiple providers sequentially - Prospeo, DropContact, Datagma, Hunter, PeopleDataLabs, Nimbler, Apollo, Lusha, Snov, and more. [ht”
when I am using apollo x clay "Find people at company by job title" integration, I noticed that the email are already provided from apollo. How accurate is this email?
“when I am using apollo x clay "Find people at company by job title" integration, I noticed that the email are already provided from apollo. How accurate is this email?”
Anyone here have any insight on Instantly vs. Zerobounce for email verification?
“yeah, i’ve used both. instantly is okay for a quick pass, but zerobounce is what i rely on to actually keep bounce rates down. i usually run zerobounce first, then send from instantly.”
Anyone here have any insight on Instantly vs. Zerobounce for email verification?
“I use trykitt with my own api key at the beginning of the waterfall ($1.5/1k verifies), then zerobounce or whatever else you like”
Anyone here have any insight on Instantly vs. Zerobounce for email verification?
“Anyone here have any insight on Instantly vs. Zerobounce for email verification?”
Hey, On the email validation waterfall, it works a bit differently by going through all validation providers even if the first one has been found
“Hey, On the email validation waterfall, it works a bit differently by going through all validation providers even if the first one has been found”
Quick Facts
- Category
- Email Verification
- Community Mentions
- 22
- Sentiment Score
- Positive (0.38)
- Website
- www.zerobounce.net
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