I am looking for CMS that works strictly via email and SMS (mobile short text messages). Anyone come across this?
Strictly? Doubt you ever will come across one. A CMS which *can* be updated via email/SMS might exist, but not one that can *only* be updated by them. Besides, a basic plug-in to support the facility wouldn't be that difficult to pull off for a developer.
On Drupal.org. There are several SMS projects http://www.jiffle.net/drupal/smsgateway http://drupal.org/project/smsgateway http://drupal.org/node/111609 http://drupal.org/search/node/SMS+Gateway+module But really, unless you want to send *TO* a cellphone, you can just send your pix or message *FROM* your cellphone to the email address. The only catch is how your cellphone provider sends pix, as an attachment or as a link. If your cell phone sends the pix as an attachment, it doesn't really matter what you are sending FROM -- email or phone.
So, yeah, I just did a test. I sent a pic from my camera phone to my email. The pic was an inline attachment. So in Drupal, this should work: http://drupal.org/project/mailhandler
I've had some people say the picture was simply at a link. That may have been when I sent to a phone, not an email address though, I'm not sure now. But since there are dozens of phones, PDAs, providers, email servers, email clients, and settings, it's something to watch out for anyway.
You could try mobitect.com they let you update your website using email or sms if you are willing to add a few lines of code to your page.
This might help: https://sitemailcms.com/ Using our service, you can send emails to quickly and easily update your website instantly. Whatever you put in your emails will appear on your website exactly the way you type it, including special formatting, pictures and other attachments.