You Do Need power plug adapter while traveling from Israel to Mayotte.

Here is Why You Need An Adapter

The outlet and plug type used in Mayotte are C and E and in Israel are C and H. This is how they look like.

Israel

In Israel, outlets of type C and H are in use.

Type C

Type H

Mayotte

In Mayotte, outlets of type C and E are in use.

Type C

Type E