Re: PowerBI SendGrid Content Pack Merged With SQL Server Data

 In order to mash up data from two sources, you need to get that data into Power BI Desktop. In the case of SendGrid, there currently isn't an out fo the box connector in the Desktop. So, you would need to explore other connection options, such as Odata to connect to the SendGrid data, and also pull in your SQL data if you needed to combine the two data sets.

The Service won't allow you to do this (as you assume).