Receiving gifts from your friends and family on Christmas make you delighted but you also owe gratitude towards them as well. Sending your regards to your loved ones will express your feelings of gratefulness on receiving gifts from them. You can simply send an email to show your courtesy to your loved ones on the holy festival of Christmas.
In the first paragraph of your email, you better state the basic purpose of writing the email, telling the recipient that you have received his/her gift and you are happy about it.
The following paragraph of your draft should reveal your feelings about the gift you have received, particularly mentioning the item the gift contained and letting the recipient know you are delightful. Pay him/her your best regards and tell him you liked the gift he/she has sent you.
In the last paragraph, you should thank the recipient once again.