You can use the FireFox extension Scrapbook with IQ. This is really convenient to grab pages behind logins (such as GMail). To do so:
 
Initial Setup:
  1. Scrapbook > Tools > Options > Organize > Enable multi-scrapbook: checked
  2. Scrapbook > Multi-Scrapbook > Manage > Add: Add your IQBase .SNDB..files folder. Name it
  3. Scrapbook > Multi-Scrapbook > Switch to the Named Scrapbook
Grabbing content:
  1. Capture content using Scrapbook
  2. In IQ, create a new item, give it a description (item field)
  3. In the HTML pane, File > Open and navigate to the .SNDB.Files\data\CurrentDateID\index.html  (CurrentDateID is the Current date / time)
  4. In the HTML pane, File > Save (required to index the content)
  5. The same can be done by drag-drop, as described in Link to Files, Folders and URLs
This process creates a link between the two applications (Scrapbook and IQ). Any change in one will be reflected in the other. (i.e. you can edit your scrapbook clipping with IQ!)
 
p.s. For GMail, ensure you capture the Printer friendly version of your email