By drilling holes, the envelopes are able to get past some US Postal codes for regulations. If the envelope is totally closed, it fits into these codes and violates the law. i.e. Should be managed and/or regulated by the US Postal Service. The other common answers also make sense. The holes drilled in the envelope allows you to see if the envelope contains anything, without having to untie the string to look inside.
Reusable large envelopes usually with string ties. Often has a series of punched holes so recipient knows that envelope contains material.
Interoffice mails always take forever.:(
an interoffice memo is a letter where empolyees write to each other. :)
inter means between
Envelopes is correct.
Interoffice communication refers to communication between the agency departments providing any agency clarification or updates related to agencies policies and procedures.
There is no standard collective noun for 'envelopes', in which case a noun suitable for the situation can function as a collective noun; for example, a box of envelopes, a pack of envelopes, a stack of envelopes, etc.
There are no perfect rhymes for the word envelopes.
Envelopes come in several shapes and sizes. I assume Hallmark envelopes can be printed in any printer designed and capable of printing envelopes.
interoffice communication whitin a company.
Always dress for the position you want, not the one you have.