On 3/21/21 8:13 PM, John Levine wrote: > It appears that Wietse Venema <postfix-users@postfix.org> said: >> With uniform or compressed payloads, 256 bytes become 261 on average, >> thus it takes 978.9 bytes on average to expand into 998. Add CR >> and LF to the 998, and we have an expansion of 1000/978.9=1.022 or >> just a little over 2%. > > That was my estimate too. I was rounding, so sue me. > >> It could have been a good idea 25 years ago. > > Turns out it came up on the ietf-smtp list in 2003. Here's the mail > discussion > and a strawman I-D that Ned Freed wrote for a deflate-8bit encoding that > combines > deflate compression (like gzip) with minimal escapes for 8BITMIME. > > https://mailarchive.ietf.org/arch/browse/ietf-822/?gbt=1&index=VmGPBP83tzuzAzdKOwtckalMipE > > https://datatracker.ietf.org/doc/draft-freed-mime-newenc/ > > I agree that these days we routinely pass around ummpteen megabyte base64 > messages and > nobody cares. If we did care, the reasonable approach would be to stick the > giant file > on a web server and use message/external-body to refer to it. That is > defined in > RFC 2017 which was indeed 25 years ago.
Not an option, sadly. Good MUAs refuse to load external content for privacy reasons. Sincerely, Demi
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