The e-mail lead packages I have used recently coming from $.10 to $.35 per lead.
One of the more effective in order to grow your mailing list is try using a pay-per-lead service where shell out a company to bring targeted subscribers to your family. https://d7pydnimwyzhx7yrvzefzjxxc4yjxkqalddgwr2hdwpkg2tqgl5q.cdn.ampproject.org/c/Moduinst.com%2Fbbs%2Fboard.php%3Fbo_table%3Dfree%26wr_id%3D135821