を込めて【をこめて】

を込めて goes after a noun for a feeling and says you put that feeling into what you do: "with love", "with all my heart", "with gratitude". こめる込める is "put into", so the feeling takes を, and the verb that follows is the action it goes into.

The common nouns are こころ心, あい愛, かんしゃ感謝, きもち気持ち, おもい思い and ねがい願い. The phrase is warm rather than formal: you meet it in letters, on gift cards and in everyday talk about cooking for someone.

Usage notes

These go beyond a feeling put into an action.

Before a noun

To describe a noun, use をこめた込めた.

Not only feelings

The noun can also be physical effort, or an attitude that colours the words. ちからをこめて力を込めて is "with all your strength", and ひにく皮肉をこめて込めて is "sarcastically".