[PLUG] How MUAs See Attachment Size

[Brent Rieck]

Rich Shepard wrote:
>    This is probably something I should know, but I don't. I'm curious why a
> 40.9M tarball is seen by postfix (and pine) as 56M large when attached to an
> email message. The size discrepancy is more than the difference between 1000
> and 1024.

I believe it's because of mime encoding, translating the 8 
bit-per-character tar file into a 7-bit-per-character attachment 
increases the total number of bytes needed to represent the file.

--Brent