The best replacement for mailer is valpak.

The best alternatives to mailer are rated as following:
★★★★★  valpak
★★★★  rip torn
★  vidal
★  lear
★  gore vidal
  val pak

Your alternative for mailer is not listed? Suggest!
Speaking about mailer, one probably shouldn't forget about return postcard.

Other search terms related to mailer and their ratings are:
★★★★★ return postcard
You have in mind a companion for mailer and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of mailer in all years. Click on graph for more.
mailer
valpak
rip torn