The best way to give a big THANK YOU to your donors is to comment on their donation when it appears on your Supporter page. You need to be logged in to your page in order to do this!
Simply type what you would like to say underneath their donation, and click "Thank ____."
Your thank you message will then display publicly on your supporter page & the donor will be emailed to advise them you have left a thank you message for them to view.
If you have an anonymous donor please feel free to leave them a thank you message as they too will be made aware of your message via email.