Add blog post: Email Domain Security - Implementing DMARC Policy for Startups

[dev-docs-github-app]

This PR adds a new blog post providing guidance on implementing DMARC policy for startup email domains. The post covers:

• Introduction to DMARC and its importance for startups
• Step-by-step implementation guide for DMARC with Google Workspace
• Best practices and common pitfalls to avoid
• Recommendations for gradually tightening email security policies

This content will help startups properly secure their email domains early on, addressing a common oversight when setting up custom domains with Google Workspace. The post is structured to be both educational and actionable, suitable for technical and non-technical readers alike.

The guide emphasizes the importance of starting with less restrictive policies and gradually increasing security measures while monitoring results, providing a practical approach for new businesses implementing email authentication.

[dev-docs-github-app]

This pull request was created by AI Agent. Please review the changes and provide feedback. Context used:

                    ```json
                    {

"docsToCreate": [
{
"filePath": "blog/Email-Domain-Security-DMARC-Policy-for-Startups.md",
"branch": "main"
}
],
"docsToUpdate": [],
"relevantCodeFiles": [],
"relevantCodeRepo": null,
"relevantDocsFiles": [
{
"filePath": "blog/AI editor security practices.md",
"branch": "main"
},
{
"filePath": "blog/AI-code-editors-security-considerations.md",
"branch": "main"
}
]
}
```

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Name	Status	Preview	Comments	Updated (UTC)
devdocsprod-dev-docs	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Jun 3, 2025 4:34am