Solved! Go to Solution.
We have the Send Alert Info token.
Info can be found here: https://community.marketo.com/MarketoArticle?id=kA050000000LADCCA4
Is this what you were looking for?
The use of this toklen will never create a duplicate anywhere. The link to the SFDC record will just be the lead in SFDC that is associated with the Marketo lead that is creating the alert.
Currently, there is no way to customize the Alert Token, but this sounds like a great post for the Ideas section! If the Sales Rep does not have an account with your Marketo Instance, they will not be able to view the lead in Marketo. They will just have to remember to click on the SFDC Detail link.