Fix Email deliverability issues

Project Description: Fix Email Deliverability Issues

I am looking for a freelancer who can help me fix email deliverability issues with my Gmail Business account.

Skills and Experience:
- Experience with troubleshooting and resolving email delivery issues
- In-depth knowledge of Gmail's email service provider settings and configurations
- Familiarity with SMTP protocols and email authentication methods (SPF, DKIM, DMARC)
- Ability to diagnose and fix Delivery Status Notification (Failure) errors
- Strong understanding of email deliverability best practices and spam filtering mechanisms

Need to fix the bugs mentioned in the website https://www.mail-tester.com/
Need to work remotely only by screen sharing ( Team Viewer)

Project Scope:
- Identify and resolve any configuration issues with Gmail's email service provider settings
- Verify and ensure proper email authentication setup (SPF, DKIM, DMARC)
- Troubleshoot and fix any issues causing Delivery Status Notification (Failure) errors
- Implement email deliverability best practices to improve inbox placement
- Provide recommendations and guidance on maintaining good email deliverability in the future

Please note that I am experiencing issues with all emails, not just specific types or certain recipients. I have been receiving Delivery Status Notification (Failure) error messages.

If you have the necessary skills and experience in email deliverability troubleshooting and fixing Gmail issues, please bid on this project.