Where does “ટપાલ” come from?

ટપાલ (Gujarati) comes from Marathi टपाल, from Kannada ಟಪಾಲ.

Ancestry of “ટપાલ”, step by step

Step	Language	Word	Meaning
1	Marathi	टपाल	—
2	Kannada	ಟಪಾಲ	—