String and button envelopes (also called string-tie or string-and-clasp envelopes) have two round button-shaped tabs — one on the flap, one on the body — connected by a length of string or cord. To close: wrap the string in a figure-eight pattern around both buttons. To open: unwrap. No adhesive, no tearing — completely reusable and often printed with routing grids. They’re the standard for interoffice mail, archiving, and files that travel between multiple recipients. The interactive guide below shows the exact wrapping technique.
String & Button Envelope Key Features
- Fully reusable: Open and close as many times as needed without any damage.
- No adhesive needed: Just wrap the string in a figure-eight around both button tabs.
- Routing-friendly: Often printed with routing grids for passing through a department or office.
- Best for: Interoffice mail, legal documents, medical files, tax records, file storage.
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