I am new to making extensions. I followed the Getting Started Guide from Google but don't know if it is possible in HTML or JavaScript.

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How can I extract the sender email address when it's formatted as an HTML tag? I'm trying to make a Chrome extension, but don't know how to access this info because of this formatting.

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How do I extract the sender email address from an HTML email? I am new to programming and creating Google Chrome Extensions. For my first project, I would like to program a Chrome Extension that automatically sends messages in reply when a contact's name is typed in Gmail.