I have a text file which I have uploaded [here][1]. I want to find all email addressee in this text file. I just know that some of them are after "Subscription Date" expression (I don't know if there is a better wat to find all of email addressee in a txt file). I saw several questions like [this][2] but they don't work for ma. Also I tried this

    res = Import["data.txt", "Lines"];
    tar = Position[res, "\"Subscription Date\""][[1, 1]];

but this is not the answer. Any idea? 


  [1]: http://www.deeplook.ir/wp-content/uploads/2021/11/data.txt
  [2]: https://mathematica.stackexchange.com/questions/245918/importing-selected-data-from-text-files