He was mentioned in the letter.

信上提到了他。

《新英汉大辞典》

When she came to that part of the letter in which her family were mentioned, in terms of such mortifying yet merited reproach, her sense of shame was severe.

当她读到他提起她家里人的那一段时，其中措辞固然伤人感情，然而那一番责难却也入情入理，于是她越发觉得惭愧。

youdao

As we mentioned in our last letter, we are in urgent need of the goods and we may be compelled to seek an alternative source of supply.

上次已去信贵公司，表示急需此批货物。如贵公司未能供应此货，本公司或需寻求其他货源。

youdao

And I think that's reflected in the letter that you mentioned.

WHITEHOUSE: Press Briefing

Hill realized that none of the people mentioned in the letter knew of its existence, and that, legally speaking, he was still the sole beneficiary.

NEWYORKER: A Soldier��s Legacy

Other retailers also are likely to take steps similar to Target's plan, according to Deborah Weinswig, Citigroup retail analyst, who mentioned the letter in a research note Friday and said it was likely to have gone to suppliers of consumer electronics, health and beauty products and food.

WSJ: Target Sends Letter Vendors Asking for Help to Combat 'Showrooming' Comparison Shopping