Here is a quick article that will help with disabling any messages being sent out to a customer
To disable communications for a contact in your account, go into the Contacts tab on the left hand side (behind the green button top left of the home page on mobile) and then load up the contact you want to stop communications too.
Once you got the contact up on your screen, click the Edit button in the top right (Blue Pencil)
In there at the bottom of the page will be a tick for 'Disable all communication with customer'
Once turned on, any reminders or messages set to go out to the customer will no longer be sent out unless this is turned back off. If you try to send a document or message to the customer yourself, it will pop up a message to say that communication to the customer has been disabled.
