Yes, we have the SmartCampaigns plugin and really like it for most campaigns, but we sometimes need to
send the campaign to only customers who purchased a particular product attribute, which SmartCampaigns does not allow.
When we have overstock (too many in stock) of particular product attribute, we want to increase it's sales volume by contacting customers who previously purchased it and offer a special price.
I can create a list using a SQL query to determine (for example) every customer who purchased "Size 9, Left" of a product.
We want to send those customers the special offer, so you answered my question. I can paste my list of emails into the recipient field. This is excellent! I will buy the plugin.
It could only make my life easier if the SmartCampaigns plugin allowed to send to only customers who purchased a particular product attribute, but this will be a definite improvement.