Yes, your data is secure.
When you use our Internal Communications application, the data stored is solely used for the purpose of providing you with analytics. Upon sending, we store the sender’s email address, recipient’s email address, subject line & email body (optional). Once a recipient has opened your email, we store their IP address and the user agent string of the device used to open your email. All data is encrypted at rest using AES 256 and in transit using TLS 1.2