There are several strategies to ensure the integrity of your email messages:
Use Secure Email Service Providers (ESPs): Choose reputable ESPs that offer encryption and other security measures to protect your emails. Implement DKIM and SPF: DomainKeys Identified Mail (DKIM) and Sender Policy Framework (SPF) are authentication methods that help verify the sender's identity and prevent email spoofing. Regular Audits: Conduct regular audits of your email content and delivery processes to identify and rectify any vulnerabilities.