Reusable tamper evident envelope

A tamper-evident envelope, comprising:

• a) a first substrate, said first substrate having a left marginal edge, a right marginal edge, a bottom marginal edge, and a top marginal edge;
• b) at least one linear perforation line in said first substrate, each of said at least one linear perforation line spaced a user-definable distance from said top marginal edge and extending from said left marginal edge to said right marginal edge;
• c) a second substrate superimposed on said first substrate, said second substrate having a left marginal edge, a right marginal edge, a bottom marginal edge, and a top marginal edge;
• d) at least one nonlinear perforation line in said second substrate, wherein each nonlinear perforation line has a lower portion and two upper portions, each of said at least one nonlinear perforation line spaced a user-definable distance from said top marginal edge and extending from said left marginal edge to said right marginal edge, the lower portion of the nonlinear perforation line extending a user-definable distance from said top marginal edge, wherein said user-definable distance from said top marginal edge is greater than the corresponding linear perforation line in said first substrate;
• e) at least one auxiliary substrate superimposed on said second substrate, said at least one auxiliary substrate having a bottom marginal edge and a top marginal edge, said top marginal edge of said at least one auxiliary substrate aligned with the two upper portions of the corresponding nonlinear perforation line in said second substrate;
• f) at least one auxiliary seal along said bottom marginal edge of said auxiliary substrate and said second substrate, said at least one auxiliary seal joining said auxiliary substrate to said second substrate;
• g) at least one seal along said left marginal edge, said right marginal edge, and said bottom marginal edge of said second substrate and said first substrate, said at least one seal joining said first substrate to said second substrate;
• h) at least one user-activated seal along the top marginal edge of said second substrate, said at least one user-activated seal joining said first substrate to said second substrate;
• and
• i) at least one user-activated auxiliary seal along the top marginal edge of said at least one auxiliary substrate, said at least one user-activated auxiliary seal joining said first substrate to said second substrate when a corresponding linear perforation line in said first substrate and a corresponding nonlinear perforation line in said second substrate are removed.