Campaign Monitor (owned by Marigold) is built around design: its template library and drag-and-drop builder are among the best looking in the category, which is why it is popular with agencies and brand-led teams that care how an email looks in the inbox.
It is sold on three plans. Lite is the cheap way in but caps your monthly sends at five times your subscriber count and throttles automation to that same allowance. Essentials removes the send cap and the automation limit, which is where most serious senders end up. There is no free plan, only a 30-day trial, and pricing is published up to 50,000 subscribers; above that Campaign Monitor quotes.
Campaign Monitor was founded in 2004 and is headquartered in Nashville, USA.