Outlook addin custom button adding in drop down

Question

Hi i am trying to add custom button in drop down in Outlook ....

like as shown in image ..black box is added as custom button

some help how i can customize ribbon to get this ..

thanks nikhil

Answer 1

thanks http://msdn.microsoft.com/en-us/library/ee692172.aspx#OfficeOLExtendingUI_ContextMenuforaMailItem

i have solved above issue after adding xml from above link in my VC++ code ribbon xml.