Font Size Change in Mail Received

Is there any way to change the font size in receive email in Apple Mail?

Answer

The easiest way to do this is to "zoom" the message. Pressing <command>-equal(=) will increase the size.

There's a "sticky" setting in Preferences > Fonts & Colors for mail font size. Note that this will affect how a message appears when a user is composing mail too, but the large font size will NOT be visible to the recipient. In other words, if I change Fonts and Colors > Message Font to size 16, both incoming and outgoing messages appear at size 16 on my monitor; but when I send the message, recipients will see my outgoing messages in the normal, plain-text font. (The only exception is signatures, which maintain the formatting as it appears in both preferences and in the mail message.)