Yes, Personalized mugs at Gossby can be used in the microwave and dishwasher safe since there's a special type of coating is applied to the mug. We suggest that you should set the medium temperature mode when using the microwave and only use the dishwasher when the cup was used with types of drink containing ingredients that cause yellow stains (for the mug have white inside).

Also, we'd recommend that you shouldn't use washing products that contain chlorine. If not, the design runs the risk of chipping off in the dishwasher due to the harsh detergents.

Although our mug has a high color printed standard, some outside factors will change the original condition. Therefore, you should not use the mug with those machines frequently to maintain the images, the color as well as the text on the mug. 

Hopefully, this information is helpful.