Is Jpeg a suitable format for a newsletter photo?

Dear Fellow iPhoto Users,
I want to email a photo. I would like to choose a file type that will show sufficient resolution on a printed page (newsletter) without being unnecessarily large (for emailing).
I read this User Tip by Terence Devlin:
https://discussions.apple.com/docs/DOC-4921
Kind. Your options are Original, Current, Jpeg, Tiff and PNG.
This option allows you to select the format of the exported file, and the choice you make here has consequences.
Original is exactly that. The file you imported from your camera, no changes or edits, no added faces, places etc. Just the Original. If you're exporting Raw or a Movie you use this option.
Current is the photo as it is right now in the database. It's the iPhoto Preview, a medium quality jpeg, it won't have all the metadata.    
Jpeg: The most common form of image file used. It's lossy, so subsequent editing might cause quality loss. It has excellent metadata support
Tiff: an uncompressed format, but file sizes are huge - often in excess of 10 times the Jpeg size.  It has excellent metadata support
PNG: a lossless compressed format that many people though would replace Jpeg, but development has stalled and it has poor metadata support.
Is Jpeg is the way to go? Your comments are most welcome.
Regards,
Ian.
MacBook Pro, OS X Mountain Lion 10.8.4

It all depends on the size of the image (dimensions of height and width) and how you will be getting it printed.
This has no bearing on whether to use jpeg or something else.
If being conventionally printed on a printing press that involves color separations, then the final image's effective resolution of points per inch should be 300.
Not necessarily the case. 300 dpi is a rule of thumb at best. You can get excellent result with a sharp image at lower dpi.
You would also need an image in CMYK mode.
This would rarely be the photographer's responsibility All cameras shoot in RGB. Just about every press photographer shoots jpeg and all shoot RGB.

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