How to Contact an Etsy Customer after a Purchase
Etsy sends you a notification e-mail when someone purchases an item from your Etsy shop. When you receive this e-mail, you need to contact the buyer to thank her for her purchase and to confirm that you've received payment for it (assuming that you have). While you're at it, give the buyer some idea of when she can expect to receive the item and invite her to drop you a line if she has any questions.
On Etsy, as in life, simple courtesy goes a long way! Saying thank you is key to keeping your customers happy.
You can contact the buyer in one of two ways (the method you choose depends simply on which one you prefer):
E-mail: Etsy includes the buyer's e-mail address in its notification e-mail.
Convo: You can use Etsy to hold a convo with a buyer (or any other Etsy user) right on the site. To initiate a convo with your buyer, visit Your Account, click the Sold Orders link on the left side of the page, click the buyer's name, and click Contact. When the New Conversation box opens, type your message and click Send.
If you want, you can configure Etsy to include some special text in the transaction notice that buyers receive when they purchase from your shop. For example, you may use this text, which Etsy calls your Message to Buyers, to thank your buyer, to convey your standard shipping practices, or to share some other useful tidbit. To set up your Message to Buyers, go to Your Account, click the Info & Appearance link under Shop Settings, type your message in the Message to Buyers area, and click the Save button.
Note that you don't want to use this autogenerated message in lieu of the one you send yourself; use it as one more point of contact.