When running a campaign to collect email subscribers, POPSMASH will always save new subscribers to Shopify Customer profiles (creating or updating existing profiles as needed).

These newly created/updated Customer profiles will also have the 'accepts marketing' flag on so they will receive your email marketing communications.

So, as long as your email marketing service syncs with Shopify, it will work with POPSMASH and receive all email subscribers who opt in during your campaign.

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