20–40% of CRM contacts have invalid email addresses. Job changes, company rebrands, and domain migrations make contact data stale fast. Clean before every campaign — not after the bounces come back.
People change jobs annually — old work email goes dead
Company rebrands change domains — old addresses bounce
Domain migrations after acquisitions invalidate addresses
Role account changes (new person in the role, same address ignored)
Standard CRM hygiene tools check for duplicates and formatting. BounceZero checks whether the addresses actually work.
When a contact leaves their company, IT deactivates the email. The domain still exists — so basic checks miss it. BounceZero's SMTP handshake confirms the specific mailbox.
Company rebrands often set up email forwarding temporarily, then let it lapse. Addresses that worked 6 months ago now bounce silently.
23% of B2B corporate domains accept all email regardless of whether the person still works there. BounceZero flags these for manual review rather than treating them as valid.
CRM data entered manually has 3–7% typo rates: gmial.com, yahoo.co, missing TLD. Caught immediately by syntax + DNS checks.
Post-acquisition email infrastructure changes can invalidate entire domains. BounceZero checks current DNS and MX records against verified domain status.
info@, sales@, contact@ — often the email associated with a company in your CRM, not an individual. Engagement rates near zero; flag for manual reassignment.
Works with HubSpot, Salesforce, Pipedrive, Close, Zoho, or any CRM that exports CSV.
From your CRM, export your contacts segment as CSV with email, first name, last name, and company columns. Filter by last activity date — start with contacts not engaged in 12+ months.
Drop the CSV into BounceZero's bulk upload. Supports up to 500,000 records per batch. Results include verdict (valid/invalid/risky/unknown), score, and classification per address.
Sort by verdict. Invalid = remove from CRM or mark as bounced. Risky (catch-all) = add tag for manual review. Unknown = retry in 24h. Valid = safe to email.
Re-import the verified CSV with the BounceZero verdict as a custom field. Use your CRM's bulk update to set contact status, create suppression lists, or trigger re-engagement workflows for risky contacts.
B2B contacts decay fastest. Set a calendar reminder for quarterly CRM audits. Use BounceZero's API to trigger verification automatically when contacts pass a specific inactivity threshold.
Upload your CRM export and know exactly which contacts are still reachable. First 100 free.
Start FreeNeed higher volume? See our bulk plans.
Follow BounceZero