If you need to send a message to customer's booked in to an event, tick the box next to their name and then in the action dropdown select to send a message. If you want to send a message to all customers, then select all using the tick box above all customers.
You can select to send an SMS (5p per message) or an email.
Please note, if you send an email this box supports HTML only. You can read more about formatting a message with HTML here. This send message tool is really meant for short messages and if you are just sending a sentence or two in which case we don't suggest needing HTML. Simply type the short message and send.