～を込めて
with (feeling / effort)
～を込めて takes a noun for a feeling like 心 (heart), 愛 (love), 感謝 (gratitude) and says that the action is done with that feeling poured into it. It is the て-form of the verb 込める（こめる）, “to put into, to load”.
English equivalents are “with all one's heart” or “filled with (love, gratitude)”. It is common in letters and on gifts: 愛を込めて = “with love”.
Doing something with feeling
Place feeling + を込めて before the verb to show the action was done sincerely and carefully.
心を込めて作る。
“I make it with all my heart.”
- 心（こころ）= heart
- を = object marker
- 込めて（こめて）= putting into (て-form of 込める)
- 作る（つくる）= to make
感謝の気持ちを込めて、手紙を書いた。
“I wrote a letter filled with gratitude.”
- 感謝（かんしゃ）= gratitude
- の = linking marker (gratitude's feeling = feeling of gratitude)
- 気持ち（きもち）= feeling
- を = object marker
- 込めて（こめて）= putting into
- 手紙（てがみ）= letter
- 書いた（かいた）= wrote
How to form it
Noun (feeling) + を込めて + verb
- 心（こころ）= heart → 心を込めて（こころをこめて）= with all one's heart
- 愛（あい）= love → 愛を込めて（あいをこめて）= with love
- 感謝（かんしゃ）= gratitude → 感謝を込めて（かんしゃをこめて）= with gratitude
Key idea
～を込めて literally means “loading” a feeling into an action. Whenever you want to say that something was done not just mechanically but with real emotion behind it, name the feeling and add を込めて.
Other N2 grammar
Updated .