Guidelines contains info about typography and graphic usage in design.
*Proprietary Rights: The IDT global name, logo, and all related product, service names, fonts design marks, and slogans are trademarks, service marks, or registered trademarks of IDT global and may not be used in any manner without the prior written consent of IDT global.
You can use IDT global logo in various email clients in different ways.
The most common way in Gmail is to copy an image URL and paste it.