Yes YOU can toggle the return receipt option, but this is a mailing list.  There is no need for you to know if EVERYONE on the list reads your postings.  Not to mention it is somewhat of a nusuance for the rest of the participants especially on lists with 100's or 1000's of members.
---------------------- snip from SLUG home page -------------------------------
Netiquette is the internet's version of manners. Netiquette links are as follows: 
  a.. http://www.albion.com/netiquette/corerules.html 
  b.. http://www.primenet.com/~vez/neti.html 
  c.. http://www.albion.com/netiquette/index.html 
--------------------------------------------------------------------------------
MTE
  ----- Original Message ----- 
  From: edoc 
  To: slug@nks.net 
  Sent: Friday, May 04, 2001 10:57 AM
  Subject: [SLUG] Read Receipt -- A Nuisance?
  Why, please?
  I activated it because some of my work-related communications require it.
  Can not all mail readers toggle auto-reply or auto-ignore to Read Receipt
  requests?
  Doc
    Turn off the return receipt please
    MTE
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