Gmail Duplicate Sender

About

Gmail Duplicate Sender adds a blue "Duplicate" button when you open emails in Gmail.

HOW IT WORKS
• Open any email in Gmail (Sent, Inbox, etc.)
• Click "Duplicate" next to Forward on the message you want to copy
• A new compose draft opens with that message's subject and HTML body
• Enter your recipient and send — it's a new email, not a forward or reply

THREAD SUPPORT
• In email threads, each message gets its own Duplicate button
• Duplicate your original sent email without copying someone's reply
• Duplicate a reply without copying the whole thread history

FEATURES
• Works inside Gmail — no OAuth or Gmail API setup required
• Preserves original email HTML formatting
• Strips Re: and Fwd: from the subject automatically
• Detects attachments and reminds you to re-attach them manually
• Matches Gmail light and dark themes

PRIVACY
• All processing happens locally in your browser
• No data is collected, stored, or sent to any server
• Only runs on mail.google.com

PERMISSIONS
• mail.google.com — required to inject the Duplicate button and read the open email's subject/body to pre-fill a new compose draft