Just phone them!

Several years ago the bridge broke on my 1955 D18
I phoned Martin and a real person answered the phone.
Within 5 min I had authorization for a free repair
(as the original owner)
Much better than email!
The repair was done locally by a certified Martin luthier.
What other company honors their original warranty
after 50+ years in such an easy manner?
Great customer relations!

Cheers, S. in Seattle