What is the difference between an "internal" campaign and an "external" campaign?

On Boost my Mail, there is a feature that allows you to distinguish between an internal campaign and an external campaign. An internal email campaign and an external email campaign differ mainly in their target audience and purpose.

1️⃣Internal campaign

Internal email campaigns are used to communicate internally within the organisation. Topics can vary, such as important announcements, policy updates, internal events, training, status reports, celebrations of special events, etc.

Since internal emails are intended to be read by people within the organisation, they are often considered more confidential and do not require the same level of encryption and security as external emails.

NB: To reduce the size of your emails, you can choose not to schedule an internal campaign if you do not need one. This will help you reduce your environmental impact.

2️⃣External campaign

External email campaigns are primarily intended to communicate with people outside the organisation in order to promote products or services, attract new customers, retain existing customers, share news, invite people to events, or achieve other marketing-related objectives.

Important: The internal/external feature is only available with the Add-In Boost my Mail.