plain envelope

Examples (10)

• Please mail the form back in a plain envelope.
• He received a mysterious letter in a plain brown envelope.
• I just need to buy a pack of plain white envelopes for my letters.
• Instead of a fancy branded one, she used a plain envelope to send her resume.
• Do you have a plain envelope I could borrow?
• The secret documents were delivered in a sealed, plain envelope.
• For the anonymous survey, we will be using plain envelopes to ensure confidentiality.
• Using a plain envelope is often best for formal correspondence.
• The only clue was a single plain envelope left on the desk, with no return address.
• A plain envelope was slipped under his door during the night.