Which email marketing automation tool do you find most effective?

[cooperjennifer]

Hi everyone,
I'm exploring different email marketing automation tools and wanted to get some insights from this community. There are so many options out there—Mailchimp, HubSpot, ActiveCampaign, Klaviyo, and more.

From your experience, which tool has been the most effective for you? Do you find it better for ease of use, integrations, analytics, or ROI?

I'd love to hear your recommendations and what makes your preferred tool stand out.
Cooperjennifer