On Thu, Jun 23, 2022 at 05:46:50PM +0530, Burn Zero wrote:
> Thank you all and to Wietse Venema. You are right, the issue is with
> the client email system. When checked in their system, the email size
> is 17 MB and while exporting and saving that message, it becomes
> around 47 MB.
Perhaps some naïve user or mail user agent is choosing quoted-printable
rather than base64 for encoding large binary attachments. That would
tend to produce roughly 2-3x expansion, because non-ASCII octets encode
to 3 bytes (=nn hex encoding). With base64 the expansion is only ~35%.
--
Viktor.
