Rohleder

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.

Integration into the shop is a bit of work, but the support is very friendly, quick and competent. Will see how the app performs over time!

Does what it says it does, doesn't have a predatory monetization scheme, simple and effective. Can be recommended for anyone that is looking for a simple improvised pick list application as well.