Keep cleaned url if I forward a message?

[jacquesdurden]

This addon is great and works really well! Thank you!

Would it be possible to keep unmangled urls if I forward a message? This already works over a "reply to" but a forward seems to not modify initial email's content. (Note: this could maybe be an option, left to user appreciation if some of them don't want to modify the content of forwarded message.)

[phavekes]

I've looked into this, but it's difficult to make this work without risking breaking forwarded attachments and signatures.