Targeting Specific Outlook Versions

Outlook version(s)	Code
All Windows Outlook (Most common)	`<!--[if mso]> your code <![endif]-->`
Outlook 2000	`<!--[if mso 9]> your code <![endif]-->`
Outlook 2002	`<!--[if mso 10]> your code <![endif]-->`
Outlook 2003	`<!--[if mso 11]> your code <![endif]-->`
Outlook 2007	`<!--[if mso 12]> your code <![endif]-->`
Outlook 2010	`<!--[if mso 14]> your code <![endif]-->`
Outlook 2013	`<!--[if mso 15]> your code <![endif]-->`
Outlook 2016	`<!--[if mso 16]> your code <![endif]-->`

Conditional Logic

Code	Description	Example
`gt`	greater than	`<!--[if gt mso 14]> Everything above Outlook 2010 <![endif]-->`
`lt`	less than	`<!--[if lt mso 14]> Everything below Outlook 2010 <![endif]-->`
`gte`	greater than or equal to	`<!--[if gte mso 14]> Outlook 2010 and above <![endif]-->`
`lte`	less than or equal to	`<!--[if lte mso 14]> Outlook 2010 and below <![endif]-->`
`\|`	or	`<!--[if (mso 12)\|(mso 16)]> Outlook 2007 / 2016 only <![endif]-->`
`!`	not	`<!--[if !mso]><!--> All Outlooks will ignore this <!--<![endif]-->`