No you can safely delete the file once your happy with the extracted one. Once the file has been unzipped you basically have 2 versions of the same file. The first the zipped one is the compressed version which makes for a smaller file transfer. The second, unzipped one is the one that is now your working file which may be viewed and modified if required. Of course if you wish to keep back-up copies on a different drive etc. zip files take up less space and tend to be tidier.

I'd like to add I started typing before nighttrain I just put more thought into it
[Message Edited]

Is that anyway to speak to someone whose been saving a G-mail invite for you?

The Journeyman....don't bother...I'm opposed to invasions of privacy as 'innocent' as they are alleged.

The Telecomunications Act prohibits message interception [mostly]....I'll be damned if I am going to consent personally to any reduction of that privacy.

If emails are intercepted coming and/or going it's highly unlikely I will return communications [reply] to gmail sent items.