Hi @lynsey_crew,
Just to make sure I understand, you have 2 separate klaviyo and 2 separate shopify accounts. Each shopify account is connected to 1 Klaviyo account and you're (manually) export/importing profiles between the 2 Klaviyo accounts. Is this correct?
Both shopify domains are separate domains (same product? different language or currency?)
Deliverability wouldn't be impacted if you only email people that signup in Klaviyo account 1 from the same account and people who signed up in account 2 from that account.
Issues might start rising once you start mixing this.
Have you set up domain authentication? Are you sending from separate email addresses?
My suggestion would be to treat both as separate accounts and focus on the domains people signup on/buy from.
Hope it helps.
Omar Lovert // Polaris Growth // Klaviyo Master Platinum Partner
We help with e-commerce growth through CRO, Klaviyo and CVO