secondary email address; sub-email
Computing term for an additional email address, often used for filtering or organization. The abbreviation サブアド is common.
See also: サブアド
I got a secondary email address separate from my main one.
sub-address
General term for a subordinate or secondary address, such as a sub-location or network sub-address. Less common than the email sense.
In this system, a sub-address is assigned to each terminal.