I moved away from HubSpot’s email marketing features not long ago, and I found that Mailchimp has been a game changer. The integration with HubSpot is seamless, enabling automatic syncing of my contacts. This allows for effective segmentation based on custom fields or deal stages, which is essential for personalized campaigns. The campaign builder in Mailchimp is much more intuitive than HubSpot’s, significantly speeding up the process. Additionally, their analytics provide in-depth insights, including heat maps of clicks, and A/B testing options that actually improve open rates. It also integrates well with Gmail, ensuring that engagement metrics are consistently updated in HubSpot.