という趣旨の

to the effect that

→ と
phrase Rare #36,650
to the effect that A formal expression used before a noun such as こと, 手紙, or 発言 to describe its gist or general meaning. Often translated as “saying that” or “to the effect that.”
JA: 彼は来週は忙しいという趣旨のメールを送ってきた。
EN: He sent me an email saying that he would be busy next week.

医者は私の父まもなくよくなるだろうという趣旨のことを言った

The doctor said something to the effect that my father would get better soon.

彼は私に会えないという趣旨の手紙を私によこした

He sent me a letter saying that he couldn’t meet me.

彼女は彼がすぐに帰るという趣旨の手紙を受け取った

She received a letter saying that he would be coming home soon.