EmailSubject Property
From Microsoft PowerPoint Visual Basic
Returns or sets the text string of the hyperlink subject line. The subject line is appended to the Internet address (URL) of the hyperlink. Read/write String.
Remarks
This property is commonly used with e-mail hyperlinks. The value of this property takes precedence over any e-mail subject specified in the Address property of the same Hyperlink object.
Example
This example sets the e-mail subject line of the first hyperlink on slide one in the active presentation.
ActivePresentation.Slides(1).Hyperlinks(1) _
.EmailSubject = "Quote Request"