Boost Deliverability with OEListScanner — Best Practices

OEListScanner Tutorial: Clean, Validate, and Export Contacts Fast

Overview

OEListScanner is a (assumed) tool for cleaning, validating, and exporting email/contact lists quickly. This tutorial shows a concise, repeatable workflow to improve deliverability and reduce bounces.

1. Prepare your list

• Export contacts from your CRM/ESP as CSV with columns: email, first_name, last_name, source, signup_date, status.
• Remove obvious duplicates and malformed rows.

2. Run OEListScanner — quick workflow

1. Upload CSV to OEListScanner.
2. Choose verification mode:
   • Fast — syntax + domain checks (use when speed matters).
   • Thorough — includes SMTP/check mailbox and disposable address detection (best for campaigns).
3. Select rules:
   • Remove syntax-invalid emails.
   • Flag disposable/temporary addresses.
   • Mark catch‑alls and role accounts (e.g., info@, admin@).
   • Identify high‑risk domains (free providers vs corporate).
4. Start scan and monitor progress.

3. Interpret results (typical output labels)

• Valid / Deliverable — safe to send.
• Invalid / Undeliverable — remove.
• Risky / Accept-All or SMTP Unknown — consider suppression or low-frequency sending.
• Disposable / Temporary — remove.
• Role / Generic — treat cautiously; often lower engagement.

4. Post-scan actions

• Remove or suppress Invalid, Disposable.
• Move Risky to a low-priority segment; send reconfirmation first.
• Segment Valid into active vs. inactive by engagement metrics.
• Create a “re-engagement” campaign for inactive but valid addresses; remove after no response.

5. Export rules and formats

• Export cleaned lists as CSV, Excel, or directly to ESP via integration/webhook.
• Include a status column and a risk_score column.
• Keep original export for record-keeping; name files with date (e.g., cleaned_contacts_2026-02-07.csv).

6. Best practices and cadence

• Clean before any major campaign (launches, promotions).
• Schedule full cleans quarterly and quick pre-send checks for large sends.
• Use engagement signals (clicks, replies) over opens to decide removals.
• Maintain suppression lists (bounces, unsubscribes) and never re-import them.

7. Quick checklist before sending

• Bounce rate < 2%
• Spam complaints near 0
• Unsubscribe link present and working
• Authentication: SPF, DKIM, DMARC set up