e-packet is only available in these countries:-

Taiwan, South Korea, and China.

India, Indonesia, Cambodia, Singapore, Thailand, Philippines, Bhutan, Vietnam, Hong Kong, Macau, Malaysia.

Australia, New Zealand.

Canada, Mexico.

Israel, Turkey.

Austria, Belgium, Denmark, Finland, France, Germany, Great Britain, Greece, Hungary, Ireland, Italy, Netherlands, Norway, Poland, Spain, Sweden, Switzerland, Portugal.

United States and Territories of the United States (Guam, Saipan, Midway, Northern Mariana Islands, Wake, America Samoa, Puerto Rico, Virgin Islands)

Brazil

https://www.post.japanpost.jp/int/service/epacketlight_en.html