[MlMt] Attachments

[Bill Cole]

On 2026-03-24 at 11:15:21 UTC-0400 (Tue, 24 Mar 2026 15:15:21 +0000)
mat via mailmate <mailmate at lists.freron.com>
is rumored to have said:

> Hello,
>
> I want to send a 32mb Video, compressed it’s the same size.
> When I attach it, it’s all the sudden more 10mb bigger.
> What makes it bigger? Base64 encoding?

Yes.

Any encoding done to send binary files in email will add ~1/3 to the 
file size. Base64 is the most common but the same thing happens with 
UUCode or BinHex.


-- 
  Bill Cole
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