[Bug-ddrescue] Feature request: email notifications about the progress

[ST]

Hello,

first of all: thank you very much for the great tool - it "rescues" a
lot of people worldwide!

I'd like to propose following feature: email notifications about the
progress. I.e. the process of creating an image of a failing drive might
be long, very long. It would be nice to have the ability to make
ddrescue inform about its progress once in a while. Like send an email
to a provided address every 3 days, reporting the progress; or send an
email every 25% recovered...

Thank you!