What most people do when they want to email photos without losing too many pixels, is go through a service, like yousendit.com, dropbox.com, or copy.com.
So, you upload a file to the service, and they provide a link you can use in an email - people who receive your email click on the link and see the photos, and can download them..
Consider trying the new CopyDotCom plugin - it's free, and I wrote it (free copy.com accounts are 15GB as of August 2014):
You just export and they're uploaded, then you get the link for use in email - it's rather painless..
Thank you for the information.
You're welcome lenkal.
dropbox has been the reigning king of cloud storage for a long time now, but copy.com is an up-n-comer: not as mature, but offering an order of magnitude more storage for free (and paid accounts offer far more storage for the money too).
alloy-photo has a great dropbox plugin, and there are others (e.g. photo-upload).
I've just been using yousendit.com for quick n' dirty (and big) emails - it has an ms-outlook plugin.
More than one way to skin a grape, but to be sure: if capacity is your primary criteria, then copy.com is the best now by far, and the CopyDotCom Lr-plugin is straight-forward to use..