Technology / Email / Header: The first part of an email message that contains controlling and meta-data such as the subject, origin and destination email addresses, the path an email takes, and its priority. May be used to filter, track spammers or uncover information about delivery rates.

Header File

Technology / Programming / Header File: In an openframeworks class or arduino library, the .h or header file is where the declarations of a method and a class are stored. MORE

Bearing Header

Business / Construction / Bearing Header: (a) A beam placed perpendicular to joists and to which joists are nailed in framing for a chimney, stairway, or other opening. (b) A wood lintel. (c) The horizontal structural member over an opening ( MORE

Double Header

Entertainment / Baseball / Double Header: Two games played in immediate succession. MORE


Technology / Email / Verification: A program that determines an email came from the sender listed in the return path or Internet headers; designed to stop email from forged senders. MORE

Subject Line

Technology / Email / Subject Line: Copy that identifies what an email message is about, often designed to entice the recipient into opening the message. The subject line appears first in the recipient's inbox, often next to the sender' MORE


Technology / Email / From: Whatever appears in the email recipient's inbox as your visible 'from' name. Chosen by the sender. May be a personal name, a brand name, an email address, a blank space, or alpha-numeric gobbledegook. MORE