My memory of 1997 era technology is weak! (Software Q)

Factual Questions
1

So, cleaning out some old hard drives I found some old emails from about 12 years ago. One of them had a picture type file embedded in it. The problem is in the ensuing decade or so I forgot how to change the text into a picture.

It is just text in the body of the email, it starts with something like “begin 600 blah.jpg” then has a boatload of text chars and appropriately enough ends with “end”.

How do I make it a jpg file?

Thanks.
PS, I couldn’t google because I don’t remember what this kind of thing is called, so, what is this kind of thing called?

2

The file is probably encoded as Base64 or uuencode. Googling those should lead to decoders.

3

uuencode! That was it! Thank you! Now I remember.