I need to set all of the chapters within a document to begin on the verso, or left-hand pages. How can I get ConTeXt to add a blank page before each chapter title if the chapter title does not appear on a verso page?
First define a page break:
\definepagebreak
[chapterpagebreak]
[yes, left]
Then set up the chapters to use this new defined page break:
\setuphead
[chapter]
[page=chapterpagebreak]
More information on the ConTeXt wiki - definepagebreak and Truly empty pagebreak before chapters.