Technology
Your system side - List hygiene• Responding instantly to unsubs• Optin confirmation strategy• Removing or suppressing the unengaged• Removing hard bounces immediately• Removing soft bounces after the 3rd bounce • Master suppression list - Engagement monitoring- DKIM and SPF- Properly formatted HTML- Careful wording selection (spam assassin)- Equal image to text ratio- Monitoring abuse@ and postmaster@ addresses- Volume and consistency- Obey the law (can spam act)Off your system factors- Blacklists- Accreditation programs- ISP feedback loops- ISP whitelisting