Campaign Monitor has built a strong reputation among creative agencies and designers for two decades. The template builder produces genuinely polished emails. The agency features – managing multiple client accounts from one dashboard, custom branded reports, client billing – are well-developed. The Unlimited plan at $29/mo covers unlimited subscribers and emails with no per-contact scaling, which can be a meaningful cost advantage for businesses with very large lists. Where Campaign Monitor lags is automation depth – ActiveCampaign covers more behavioral complexity for comparable pricing.

Campaign Monitor’s email builder is regarded as one of the most design-focused in the category. The template library includes 80+ professionally designed templates. The drag-and-drop editor produces clean, responsive HTML without visible code. Custom CSS is accessible for advanced designers. The visual consistency between the editor preview and actual email rendering across clients (Gmail, Outlook, Apple Mail) is reliable – reducing the testing overhead that frustrates designers using less precise builders.

Campaign Monitor’s agency features allow managing multiple client accounts from a single dashboard. Each client account is isolated-campaigns, subscriber lists, and billing are separate. Branded reports can be white-labeled with the agency’s logo for client delivery. Client billing options allow agencies to resell email marketing services under their own pricing. For digital agencies that manage email for 5-50 clients, the multi-account structure reduces the administrative overhead of separate logins.

Campaign Monitor segments subscribers by custom fields, campaign engagement history, link click behavior, and purchase data from connected e-commerce integrations. Dynamic content blocks show different content to different segments within the same email – one send, multiple personalized versions. Premier plan adds engagement scoring that ranks subscribers by historical engagement, enabling targeted re-engagement campaigns.

Campaign Monitor’s Journey builder creates automated email sequences with time delays and conditional branching. Triggers include list subscription, date-based events, and link click behavior. The Journey builder is visual and accessible without technical knowledge. For most welcome series and drip campaign use cases, it covers the requirement – though it’s less sophisticated than ActiveCampaign for complex behavioral branching.