About wikimemo website 
wikimemo is an empty website; it becomes whatever you or your organization post to it. You can post a message from email, an image attachment, or a PDF file.
just email-and-update!
How to insert image on your email for wikimemo.
1Start by choosing Write or Compose in your email app (client).
2If you want to have text above the image, we suggest starting your message first before uploading your pictures. Add your copy and then put your cursor where you want it to show up. Then select, “Insert Image”.
3Once you click on the insert image button at the bottom of the email screen, you will be prompted to choose from “photos,” “albums,” “upload” or “web address”.
choose “web address” to insert an image that is on the Internet by typing or pasting in the image URL.
An image URL is an internet address that points directly to a specific image.
Image URLs typically include the image filename.

such as in this example:
How to get an Image URL
To get an image URL using Chrome, Firefox or Safari, right-click on the image you would like to use, and select‘Copy Image URL’ or ‘Copy Image Address’ from the right-click menu.