Email Marketing for Small Agencies (2026): Brevo vs Mailchimp vs ActiveCampaign

Pricing and feature notes below were verified on April 4, 2026 from official vendor pages. The table compares the lowest meaningful entry points for a small agency, not enterprise tiers. Sources: Brevo pricing plans, Mailchimp pricing, and ActiveCampaign vs Brevo.

Quick read: Brevo wins on value, Mailchimp is the middle ground, and ActiveCampaign is only the right answer when automation depth is already paying for itself.

Brevo has the cheapest real starting point in this comparison. Its help center says Free includes 300 daily email sends, transactional email, SMS campaigns, and marketing automation for up to 2,000 contacts, while Starter begins at $9/month and removes the daily send cap. Source: Brevo pricing plans.

The more important tier for agencies is Standard at $18/month. That plan adds unlimited-contact automation, A/B testing, AI send-time optimization, advanced reports, and one landing page, which is why Brevo stays the strongest budget recommendation in our broader email marketing guide.

Verdict: Pick Brevo if you want the lowest-cost path to newsletters, follow-up sequences, and a light client-communication stack without adding a second tool too early.

Mailchimp's official pricing page makes the free plan look more like a sandbox than a real operating plan. Free is capped at 500 emails per month or 250 per day, includes one seat, and does not include marketing automation flows. Source: Mailchimp pricing.

The usable tiers start after the 14-day free trial. Essentials starts at $13/month for 500 contacts, includes 5,000 monthly sends, 3 seats, and up to 4 flow steps. Standard starts at $20/month for 500 contacts, includes 6,000 monthly sends, 5 seats, and up to 200 flows.

Verdict: Mailchimp is reasonable when you want a more structured paid email platform than Brevo Free, but it is weaker on value once budget control is the main buying criterion.

ActiveCampaign does not compete on a permanent free tier. Its official comparison page offers a 14-day free trial with no credit card required, then puts Starter at $15/month for 1,000 contacts with 10,000 monthly email sends, 5 actions and triggers per automation, and one user. Source: ActiveCampaign vs Brevo.

The real breakpoint is Plus at $49/month. That tier removes the trigger and action cap, adds landing pages, and is the first plan that feels aligned with the product's automation-first positioning. Pro rises to $79/month if you need deeper reporting and 3 users.

Verdict: Choose ActiveCampaign only if segmented nurture, reactivation, or branching follow-up is already part of how your agency closes business. If not, start cheaper and simpler with the deeper ActiveCampaign review as your upgrade checkpoint.

Pick Brevo if you want the best budget-to-capability ratio and need email, automations, SMS, or light CRM in one account.

Pick Mailchimp if you want a 14-day test drive and you are comfortable paying more for a more structured paid-plan ladder once the trial ends.

Pick ActiveCampaign if your agency already depends on branching automation and the move from $15 Starter to $49 Plus still looks cheap relative to the revenue at risk.

If your shortlist is really two tools rather than three, keep going with Brevo vs Mailchimp or our ActiveCampaign solo-agency review.