My printer default in Mail seems to be on landscape and 50 scale. I tried to change it to portrait and 100% scale and saved that setting but for some reasons, it seems to revert to landscape and 50%. Help is needed is changing that setting. Jenny tried to help but encountered the same problem.
Just reset the printer presets! The presets are found under the Print dialogue, Presets, Show Presets.
Once there, click on the box in the lower left corner and next time you print your presets will be reset.