If you are using Invoke code activity this can be done. Use the below code.
Dim OutlookApp As Microsoft.Office.Interop.Outlook._Application
OutlookApp = New Microsoft.Office.Interop.Outlook.ApplicationClass
Dim mail As Microsoft.Office.Interop.Outlook.MailItem = DirectCast(OutlookApp.CreateItem(Microsoft.Office.Interop.Outlook.OlItemType.olMailItem), Microsoft.Office.Interop.Outlook.MailItem)
mail.Subject = “Test Email”
mail.Body = “Test Email”
mail.To = “emailID”
mail.Importance = Microsoft.Office.Interop.Outlook.OlImportance.olImportanceHigh
mail.send()
You’ll have to import outlook interop namespace as well.
Let me know if it works.