Attach your name and/or address label to your request.
NEVER give out your social security number (SSN).
Your letter could read like this (feel free to copy and paste):
(list all names and addresses shown on the mailing labels)
To: Direct Marketing Association
* Please add the address for us above to the name removal file of your Mail Preference Service (MPS), so your member companies won't send unsolicited mail. Please also cover all addressees at that address.
* Please also include the following additional address for us in your MPS.
(add any additional addresses here).
Please also cover all addressees there.
(and if you don't want unsolicited phone calls)
* Please also forward the following to your Telephone Preference Service (TPS), requesting no telemarketing calls to:
(your tel. nos.)