This is a free, end-to-end encrypted messaging app, which allows you to communicate directly with The Post. You can send text messages, images and video. It also allows you to talk securely with a reporter by calling them via the Signal app. No metadata is retained by Signal. It can be downloaded from the app store. Signal can be configured to delete messages automatically at a designated time interval.
The Post’s Signal phone number: 202-222-5862
Download Signal from iTunes
Download Signal from Google Play