Shopify App that upsells post-purchase that combines orders

[johnthejohnjohn]

Hi everyone,

I've spent a few hours digging through the app store - there are several upsell apps, but they don't go into details on how they handle orders and specifically if they combine orders?

Is there a Shopify app that either emails people with an upsell item or provides a link, *and* simply combines those two orders or edits the pre-existing order?