After creating and sending your Thank yous you will need to choose the Mark as Sent button and they will be removed from the Unsent Thank Yous list.
- Go to Donations
- Choose Thank yous from the left
- Select [sent] next to the donor who received a thank you
- Choose Print from the left
- Check the boxes next to the Donations/donors who have received Thank yous
- Pick the Mark as Sent button
They will be removed from your Unsent Thank Yous list.