regex101: extract text from quotes/symbols by select from a specific word/char to the first one char/symbol that will not be inclu

Regular Expression

mail.*?(?=")

New

      <attachment id="mail/1000/7anvknt1_r" />
      <attachment id="mail/1000/ahgysvxi_r" />
      <attachment id="mail/1000/as6oz67y_r" />
      <attachment id="mail/1000/doqqqj76_r" />
      <attachment id="mail/1000/h9hl2cbg_r" />
      <attachment id="mail/1000/l5a3vy6p_r" />
      <attachment id="mail/1000/n84e8hh1_r" />
      <attachment id="mail/1000/o1pq2pc9_r" />
      <attachment id="mail/1000/o55xpf1l_r" />
      <attachment id="mail/1000/ol6sgb32_r" />
      <attachment id="mail/1000/u4b774cz_r" />
      <attachment id="mail/1000/xcp3npe2_r" />
      <attachment id="mail/1000/xrskqx0o_r" />
      <attachment id="mail/1000/481aoi3n_r" />
      <attachment id="mail/1000/5plrokel_r" />
      <attachment id="mail/1000/67r78zyp_r" />
      <attachment id="mail/1000/919jobbz_r" />
      <attachment id="mail/1000/e1651fm2_r" />
      <attachment id="mail/1000/h4kp7uaj_r" />
      <attachment id="mail/1000/jlvvle3p_r" />
      <attachment id="mail/1000/lnat76t4_r" />
      <attach