Removing gridlines in Outlook 2007
Got a call from someone who had been fiddling around in tables, had wandered away from it and was now disconcerted to find gridlines around their signature all the time. Outlook and HTML email being what it is, tables in signatures are a thing we choose to live with. To remove gridlines, begin a new email, then click inside the signature so that Outlook will present the Table Design and Layout tabs. Select Design, then track across the ribbon to the right hand side of Table Styles where you should find a Borders button with a drop down. Near the bottom of that long drop down should be "View Gridlines", which in this situation would be highlighted. Click to change that and the gridlines should disappear.