Send With Duck от Globy Peaks

Send With Duck makes it easy to use DuckDuckGo's Email Protection forwarding service. Enter any recipient email address and instantly convert it to the duck.com forwarding format, so replies go through your private duck.com address instead of revealing your real email.

Features:
• Convert any email to duck.com forwarding format with one click
• Auto-convert mailto: links on web pages as you browse (Marked with a duck)
• Generate new duck.com email addresses via the DuckDuckGo API
• Manage multiple duck.com addresses with custom aliases
• Copy converted addresses or open your email app directly
• Works on both desktop and mobile Firefox