Brevo PushOwl: Email,Push,SMS

The support is among the best I've found in a Shopify app. Harish from the CX team answered every technical question in detail and with honesty — he even reproduced the issue on our store and explained exactly how the tracking works under the hood. The Shopify → Brevo sync works well (contacts, attributes and purchase data verified with real orders), and reverse sync can be controlled from settings.
Worth knowing: checkout events are client-side (cookies/browser session), so abandoned cart recovery won't capture every visitor — a platform limitation to be aware of before building automations on those events. The team is transparent about it, which I appreciate.