| Sending before DNS verification | Complete Domains setup; refresh until SPF/DKIM/DMARC pass |
| Importing stale addresses | Send to a clean segment; remove hard bounces promptly |
| Consent promises ≠ email content | Rewrite signup copy or change what you send |
| Duplicate lists in spreadsheets | Pick Aveiro audience as system of record |
| Only watching open rate | Check Deliverability for bounce and complaint trends |
| Testing in editor preview | Always test signup on the published URL |