Brevo PushOwl: Email,Push,SMS

Completely useless for email marketing unless you spam your customers.

Brevo is pushing "performance indicators". If your marketing strategy is not to spam your customers every day, but instead only write when there's something relevant happening (eg. every 3 months), you will fail these thresholds and your account will instantly be locked.

They will refuse to unlock it until you unsubscribe, at which point it magically is possible to unlock the account after all.

Avoid this at all costs for email marketing and just use the default shopify app. It works just as well, and won't lock your account over made-up numbers.