The Biggest Signal for Brands to Spend in News Letters

If i'm a brand, like, the biggest signal me to spend in news letters are, are my competitors running there and seeing success? Or, if not, are brands that i share an audience with running there. And it's easy for me to put more dollars into that nice what do you think, is like a sign from the outside, if there is one that a brand would probably do well with news liht or advertising. We saw them one in the morning borou or similar news lettern were like, ok, they're obviously have budget. The timing makes sense. Let's go hit em up some news letters.