Within GoAssemble you can edit how you receive notifications relating to messages, follow the instructions below to set up your preferred notifiaction method.
Click on the bell icon in the top right hand corner of your GoAssemble screen.

Click on 'Settings' to open the notifications setting page.

Scroll down to the 'Message Centre' section and click on the downward arrow to open the options.
Set your preferred notification settings.
Your settings will automatically be saved.