Ian Eiloart wrote: > On 26 May 2011, at 12:46, Hector Santos wrote: > >> In principle, passthru mail should not be tampered, but MLM list mail are >> the industry accepted exception to this non-tampering tradition and today >> (at least in the USA), it is CAN-SPAM legal requirement to have a >> viewable OPT-OUT text shown to the user to satisfy the CAN-SPAM >> "capitalistic" legal right provided to the VENDOR to due business with users.
> Yes, and are similar requirements across the European Union. In the UK, > the phrase is "easy to use". That's not the case if the user interface > doesn't obviously expose it. > > Still, we're straying off topic here, I guess. It was a background side point, but nevertheless an important point to keep in mind when a suggestion is made list operators is expected to move towards not changing list submissions during the distribution. Whether via a footer or via a meta-data header intelligent modern mail viewers make use of, it needs to be shown and this is what I have to consider. My take (as a list software developer) is that if these smart mail viewer are expected to exist, then we did our job by providing guidance to domain signers sending mail to a list: - use the "l=" tag - not hash RFC5322.Subject (not actually written in spec) That way the list server can continue two to three things: - Add the LIST-* headers - Add the text footer - Add the Subject tag [LIST-NAME] and the smart MUA now can: - Use the meta-data (List-Unsubscribe), and - not show the text beyond "l=" body length. So it appears we have all the ingredients in place actually. But for the legacy MUA, the visual footer would satisfy the "business" requirements. Note: I am just describing what I have to consider for our List Server product, I am not thinking as a List Operator only. -- Hector Santos, CTO http://www.santronics.com http://santronics.blogspot.com _______________________________________________ NOTE WELL: This list operates according to http://mipassoc.org/dkim/ietf-list-rules.html
