Corgi-L is configured to reject attachments of any kind, including photos. Instead, we have our own on-line photo gallery you can use.
The Corgi-L mailing list is configured to reject attachments of any kind, which means that pictures cannot be included on the list. We do this specifically because of the size of the messages (many members are still on dial-up), the effect it has on the digest version of Corgi-L (attachments show up as garbage), and of course the realization that most email viruses and malware show up in the form of attachments.
We recommend that you upload your photo to a photo sharing site or service such as Flickr, Picasa or many, many others, and then include links to your photos in your message to Corgi-L.