Is it possible to email a large PP presentation?
Usually there are limits placed by your/the recipient's email providers on the
maximum size of any single email and of the amount of stuff you can have in your
inbox at a time.
If you exceed any of those limits, then you won't be able to send the file by
email. Otherwise, no problem.
Can you convert it to a zip
file?
Yes, but unless you're using a VERY old version of PPT, it's already
well-compressed. Zipping doesn't usually shrink PPT files much.
This has some further suggestions for putting your PPTs on the Weight Watcher
plan:
Why are my PowerPoint files so big? What can I do about it?
http://www.rdpslides.com/pptfaq/FAQ00062.htm