Will browser purchase events match Popsixle server events exactly?

Not necessarily.

Browser purchase events may be higher than Popsixle server events for several reasons:

• If people reload the confirmation page
• Participate in a post-purchase survey
• Opt-in to a post-purchase cross sell opportunity

In comparison, Popsixle purchase events are coming directly from Shopify's API and have a higher degree of reliability. Our server-side purchase volume should match your Shopify purchase volume 1:1.