Email address.

Email.

pertaining or relating to lightning, electric, electrical, electronic

mail train, mail van

Electrocute.

post-haste, without stopping on the way

electric therapy

airmail

post a letter

postman, courier

letter box

post office, mailbox

by return post

switch-board

the electric wire, electric telegraph

parcel post

officials' rest house

post a letter

to post relays (of horses, or runners, or palanquin-bearers)

send and receive messengers in quick succession, communicate rapidly

bid (at an auction)

the national organization that is responsible for postal services, a building where you can buy stamps, post letters and packages, and use other services provided by the national postal service, post office