I haven’t seen that issue before with it zooming way in. It may not be related to the Archival setting. Could you by any chance send us a screenshot of how it looks over email to support [at] ribbet.com so we can investigate?
Another option is you can set your Image Quality setting back to Print (as opposed to Archival). Then after opening your image, click Undo once. This does the exact same thing as the Archival setting – it returns the image to its full resolution (up to a maximum of 16 megapixels).
Does that help?
– Regards, The Ribbet Team