BlueMorel wrote:
Changing from RAW to jpg causes loss of data, and emailing does, too. IMHO, though, resolution and depth of field problems are more likely to be a camera issue - lens, settings, lighting, tripod use, etc. If you would post an example of a photo, then more experienced people here will give you feedback
Emailing only causes loss of data if the file has to be reduced in size to meet mail provider requirements.
Otherwise, there is no degradation in the file.