outgoing Mail Rule Setup for Gmail

I am looking for a freelancer who can help me set up an outgoing mail rule for Gmail. Specifically, I need assistance in restricting outgoing mail for all domains apart from two specific domains.

Requirements:
- Set up an outgoing mail restriction for all domains except two specified domains
- Provide step-by-step guidance on implementing the email rule

Skills and Experience:
- Strong knowledge of Gmail and its rule settings
- Experience in setting up email rules and restrictions
- Excellent communication skills to provide clear step-by-step guidance

If you have experience in setting up email rules and restrictions in Gmail and can provide step-by-step guidance, please reach out to me. Thank you!