Security tools and email providers use this header to verify if the "From" address matches the true originating server. Spot Spoofing Like the Pros - Biola University

is a known application used by businesses and marketers to manage and send large-scale communication campaigns.

Depending on where you encountered it, this file likely serves one of the following purposes: ⚙️ Digital Marketing Tool

Some versions use an Android Gateway to send SMS directly from a mobile device's SIM card. 🛡️ Technical and Security Context