Hi @Rara
Klaviyo uses a last-touch attribution model with a default tracking period of 5 days from the time a message is received. The default tracking is last open or clicked on an email. Both the tracking and tracking period can be changed within the Account > Settings > Email.
Any conversions that occur beyond the 5 days will not be attributed to the email campaign.
In your case, you sent your email on Sunday 4/17 at 8pm. Assuming your account is configured to the default settings, anyone who received that email could open or click the email within 5 days and if they purchased after opening or clicking, the conversion would be attributed to that email.
Keep in mind, if the customer never opened the open or clicked the email, then the order would not be attributed to the email.
Klaviyo has a helpful guide about their conversion attribution here:
https://help.klaviyo.com/hc/en-us/articles/115005248128-Understanding-Conversion-Tracking
I’d check your account settings to verify how its configured, but hope this helps!
Best,
@In the Inbox