Does there exist a straightforward way to email or put online a photo, but keep its content private except to the intended recipient(s)? I found a number of pics of friends from long ago, ones I suspect these friends have forgotten about and might enjoy recalling. Though the content of these photos is IMO tame, the potential exists that some people depicted might not agree, so privacy is important. I am wary of emailing such pics to, say, a friend's gmail account since Google examines attachments, does face matching upon them, etc. I considered uploading the pics to a private web site, except if I email a link to that content, Google can crawl it for content. I've considered encrypting or otherwise obfuscating the photos, but the recipient will need to decrypt them, and some of the intended recipients are not tech savvy. I don't have a solution yet.