Add reply-to email for SendGrid MCP setup

[bradflaugher]

Set reply_to to [email protected] for both send_email and send_template_email functions to ensure all email replies are directed to the Victoria followup address.

Summary

• Replace this line with a summary of your changes

Testing

• pytest
• other (please describe)

Checklist

• Documentation updated (if needed)
• Tests added or updated (if needed)
• Ready for review