SQL Server 2008 :: 2 Emails Being Send From Job When Only 1 Should Send?

I have a job that emails out shipment notifications at the end of the day to our customers. The problem I have is I don't understand why the same email is sending out twice within a minute of each other when the job is only scheduled to run once. If I take the code out of the step and run it in management studio it only emails once. I attached the code for one customer for reference. We are running SQL 2008 on a VM sending to an exchange 2010 server.

DECLARE @tableHTML NVARCHAR(MAX) ;
SET @tableHTML =N'<H1>XYZ Company ASN For ' + CONVERT(VARCHAR(10), GETDATE(), 101) + ' </H1>' +
N'<table border="1">' +
N'<tr><th>Vendor</th><th>Delivery Date</th>' +
N'<th>Purchase Order Number</th><th>Item Number</th><th>Item Description</th>' +
N'<th>Quantity Shipped</th><th>UOM</th><th>BOL Number</th>'

[code]....