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Use bulk CSV jobs to validate large lists, track progress, receive webhooks, and export enriched recipient risk data.
Bulk jobs are designed for repeatable list hygiene. Upload a CSV with an email column, poll job status, then download enriched results when processing completes.
Do not simply delete every non-valid address. Use the result categories to make a sending policy that matches your risk tolerance.
Remove hard failures and malformed addresses before sending.
Catch-all and role addresses can be kept separate for lower-volume or manual review workflows.
Temporary SMTP blocks, greylists, or provider throttles can make a later result more reliable.
Bulk validation can be driven through the API with optional webhook URLs for completion events. That makes it fit CRM imports, scheduled hygiene, and agency reporting.