noun
mail merge
Computing term for merging a data source with a document template to produce personalized copies, such as form letters or labels.
差し込み印刷を使って、宛名ラベルを一括作成した。
I used mail merge to create address labels in bulk.
Compound of 差し込み (insertion) and 印刷 (printing), reflecting the process of inserting variable data into a document for printing.