List of email addresses to verify. Minimum 1, maximum 10,000 emails per run.
Check MX Records
checkMXbooleanOptional
Verify that the email domain has valid mail servers (recommended for best accuracy)
Default value of this property is true
Detect Disposable Emails
checkDisposablebooleanOptional
Flag temporary/disposable email services (e.g., 10minutemail, guerrillamail)
Default value of this property is true
Detect Role-Based Emails
checkRoleBasedbooleanOptional
Flag generic/role-based addresses (e.g., info@, support@, admin@)
Default value of this property is true
DNS Timeout (milliseconds)
timeoutintegerOptional
Maximum time to wait for DNS lookups. Increase for slow networks.
Default value of this property is 5000
Concurrent Validations
concurrencyintegerOptional
Number of emails to validate simultaneously. Higher = faster but may hit rate limits.
Default value of this property is 10
Fail Fast Mode
failFastbooleanOptional
Exit validation immediately on first critical failure (syntax, reserved domain, MX, or disposable). Provides 30-50% faster validation for invalid emails. Note: Role-based failures do NOT trigger early exit. Reserved domain check is always performed.
Default value of this property is false
Output Filter
outputFilterEnumOptional
Filter which results to include in the dataset. 'all': all results, 'accept': only valid/low-risk emails (ACCEPT), 'review': only medium-risk emails (REVIEW), 'reject': only invalid/high-risk emails (REJECT).
When enabled, creates 3 separate datasets: 'valid-emails' (ACCEPT), 'review-emails' (REVIEW), and 'reject-emails' (REJECT). Useful for processing results separately.
Default value of this property is false
Deduplicate Emails
deduplicatebooleanOptional
Remove duplicate email addresses before validation (case-insensitive). Saves processing time and costs for lists with duplicates.
Default value of this property is false
Include Domain Analysis
includeDomainAnalysisbooleanOptional
Add domain statistics to summary: top domains, provider breakdown (free/business/disposable/role), and diversity metrics. Useful for understanding email list composition.