You will probably be annoyed to find that the Eudora icon is doing exactly what it should be doing. Trying to attract your attention!
It will only stop jumping when you click on the it or the email program itself, thus acknowledging the fact that you have new mail.
I don't think there is a way to disable it
P
I use Eudora for my mail and have its quick launch icon in the dock. This is a minor, but everytime I get mail and the message as such comes on the screen, I click OK, but the stupid icon won't stop jumping out of the dock until I click it or the mail program which may be laying under another window. Its like a baby having a temper tantrum. Very annoying when I'm reading something else. How do I disable that?
Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic