Why are my emails getting blocked by firewalls?

1. Check Email SPAM Score: Check your email’s SPAM score to determine if it is too high.
2. Update Email Authentication Records: Update your email records on file with your domain’s DNS provider.
3. Encrypt Email Content: Use encryption for email content to ensure its integrity.
4. Check for Blacklisted IP Address: Check if your IP address is listed with RBLs (Real Time Blackhole Lists) and remove it if you are blacklisted.
5. Verify Third-Party Services: If you are using third-party email marketing services, make sure that the service has been verified by the email server.