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Idaho State University

Suspicious Letter and Package Indicators

Bomb Package

mail bomb

Treat it as suspect!
Isolate it!


  • Never accept mail, especially packages, at your home in a foreign area.
  • Make sure family members and clerical staff know to refuse all unexpected mail at home or office.
  • Remember - It May Be Anthrax or a Bomb.

Suspicious Letter & Parcel Recognition Points(Anthrax or Bomb)

  • Excessive Postage
  • Incorrect Titles
  • Titles but No Names
  • Misspellings of Common Words
  • Oily Stains or Discolorations
  • No Return Address
  • Excessive Weight
  • Rigid Envelope
  • Lopsided or Uneven Envelope
  • Protruding Wires or Tinfoil
  • Visual Distractions
  • Foreign Mail, Air Mail and Special Delivery
  • Restrictive Markings such as Confidential, Personal, etc.
  • Hand Written or Poorly Typed Addresses
  • Excessive Securing Material such as Masking Tape, String, etc.