Some phrases to use in a special thank you note include, "I am all gratitude" and "I am forever grateful." The note can also state that words are not enough to express the amount of gratitude felt.
Other sentiments can express that the sender is overwhelmed by gratitude or that the sender will never forget the actions or gifts from the person he is thanking. Phrases can include "I truly appreciate you" and
"Please accept my deepest thanks." Other ideas to express thanks are to offer deep or sincere gratitude. The note can also state "I feel so blessed."
If thanking someone for a special gift, the note can express that the gift was generous and that the gift made the day for the person who received the gift. The note can also express that the person who gave the gift was thoughtful and made the recipient feel special. The note can state how important the gift was, stating "We will treasure the gift forever."
If thanking someone for a service provided, the note can state that the service meant more than money could buy. The note can also comment that a person went above and beyond, and did not go unnoticed. Another phrase that would work in a special thank you is "We will always be grateful for all that you have done to help us."