Here is a Comcast reply for getting email to your COMCAST friends. The COMCAST user has to do this on their end.

Clint Bridges, Owner
Grant County PowerNet
March 20,2008

		 ----- Original Message -----
		 From: "Comcast ECARE"
		 To: XXXXXXXXXXXX@gcpower.net
		 Sent: Wednesday, March 19, 2008 8:14 AM
		 Subject: Re: Comments for Rick Germano (KMM30247178V39595L0KM)


		 > Dear Mrs. XXXXXXXX,
		 > 
		 > Thank you for contacting the Comcast Office of Rick Germano, Senior Vice
		 > President of Customer Operations in regards to the problems your
		 > daughter is having with getting your email. I can understand your
		 > frustration with this matter and I will be happy to provide you some
		 > information that you can pass onto your daughter to aid her correcting
		 > this matter.
		 >
		 >>From what you have described  our spam filters are accidentally catching
		 > this email message, please tell her to forward your email address  to us
		 > at:	
		 >
		 > this-is-not-spam@comcast.net
		 >
		 > She can check also check her Comcast screened mail folder, she must
		 > login into her inbox at www.Comcast.net and then select the screened
		 > mail folder from the left menu. By default the screen mail is deleted
		 > automatically, if she wishes to have the option to review it prior to
		 > deletion she must configure her personal settings.
		 >
		 > To activate the Spam Screener for your e-mail address:
		 >
		 > 1. Go to www.comcast.net and log in
		 > 2. Click on My Account
		 > 4. Click on Enable or disable Spam filters
		 > 5. Next to Enable Spam Filtering, select Yes
		 > 6. Select whether you want a local copy kept in the Screened Mail folder
		 > 7. Click Update
		 >
		 > If successful, she will be taken back to the main My Account/Account
		 > Management page and will receive the following message:
		 >
		 > Spam Filter settings have been updated for (username)
		 >
		 > Please note that the screened folder becomes available only after the
		 > next message designated as spam is received and moved there. By default
		 > those messages kept locally in your screened mail folder are deleted
		 > after 72 hours. To change this please log into your Message Center and
		 > select the Email Options and then the "Email Deletion Policy" link.
		 >
		 > If you or your daughter have any further questions please do not
		 > hesitate to contact us again.
		 >
		 > Mrs. XXXXXXXXX,  I appreciate you providing us the opportunity to assist
		 > you.
		 >
		 > To assure the proper tracking of this issue, we have created the
		 > following customer service ticket: XXXXXXXX
  		>
		> Please refer to this number should you contact us regarding this same
		> issue.
		>
		> Thank you for choosing Comcast.
		>
		> Sincerely,
		>
		> Michelle Flood
		> Office of Rick Germano
		>