Following are the Steps to Change the fonts in to the Email Template in eZee Reservation.
1) Login to eZee Reservation
2) Go to Marketing Tab>>>Email>>>>Templates
3) Click on pencil Mark (Edit) in front of the template you want to edit .
4) Select the Sentence/Word you want to change the fonts.
5) Select the font from the drop down list and Click On Edit
Kindly Refer to the below screen Shot for the same.
Note :-As per my testing its functioning properly for eZee Reservation & eZee Centrix