keypal means the email equivalent of a penpal; someone with whom to exchange email for the simple joy of communicating.
Etymology
From key + pal, in reference to the computer keyboard.
noun
- The email equivalent of a penpal; someone with whom to exchange email for the simple joy of communicating.“The most common type of person-to-person contact is through keypal exchanges. (The modern version of penpals.) Many organizations exist to help teachers to find suitable keypal connections for their students.”