Interlocking mailing package

A mailing package comprising:

• a package body having a first section, a second section, and a third section, the first section connected to the second section by a first foldable joint;
• the second section is connected to a first end section through a second foldable joint and a second end section through a third foldable joint and having a plurality of end slits cut therethrough disposed near said first end section and the second end section, a first and second guide receiver slit, and a main locking flap receiver slit;
• the third section connected through a fourth foldable joint to the second section, and to a first locking end flap through a fifth foldable joint, a second locking end flap through a sixth foldable joint, and a main locking flap having a main locking tab and a first and second guide member through a seventh foldable joint;
• and
• the first, second and third sections joined such that when the first section is folded over the second section and the second section is folded over the third section the plurality of end slits are presented to the first and second locking end flaps, the first and second guide tabs are received in the first and second guide receiver slits and the main locking flap receiver slit is presented to the main locking flap.