You can barely think: thank you.
But I still feel that it is not enough to express my gratitude. I think there are three points to express my gratitude. First, you should tell them that you have received their red envelopes. Second, thank them very much; The third is to bless them.
The recommendation can be said as follows: birthday wishes from brothers and sisters have been received. I like them very much and thank them very much. I wish you good health and all the best! You can insert some expressions between sentences to enrich and enrich them, which is very vivid!