My verdict: affordable and GDPR-compliant, but basic.
Brevo (ex-Sendinblue) does email marketing + SMS + basic CRM. The free plan is generous, pricing is honest. But don't expect advanced features.
What I like less: the interface looks dated, marketing automation is very basic, and you'll quickly reach limits if you want to scale. For cold email, forget it - it's not made for that.
My advice: decent for starting with simple newsletters and a tight budget. But plan to migrate to HubSpot or ActiveCampaign as soon as your needs evolve.