Use a generic envelope with no return address
Do not include your name in the letter
Avoid handwriting that can identify you
Type the letter instead of writing it by hand
Use a public printer or computer if needed
Remove metadata from any digital file before printing
Do not mention personal details that reveal your identity
Mail it from a location not connected to you
Use cash if paying for postage
Avoid fingerprints by handling it carefully
Seal the envelope securely
Consider using a neutral tone and simple wording
Do not reuse paper, envelopes, or stamps linked to you
Check local laws before sending anything anonymous