Hi Brian,
I'm sorry to hear that some of your customers are ignoring the emails sent by our service. We do not currently offer a feature that would allow the Auctiva generated sales emails to show your eBay username (instead of seller-auto@auctiva.com) in the “From” field, but we will consider this idea when planning future updates to our site.
We appreciate the feedback. If you need any further assistance with your account, please feel free to contact our Customer Support team by mousing over the "Help" tab and selecting the "File Support Case" option.
-Mike