Best Email Marketing Software for Agencies
Tools suitable for managing multiple clients.
Affiliate disclosure: Some links on this page may be affiliate links. If you buy through them we may earn a commission at no extra cost to you. This never affects our rankings. Learn more.
How we ranked
Criteria for this guide: Multi-user access, multi-account management, partner programs and white-label options. We apply our review methodology and use qualitative “best for” labels rather than numeric scores. Rankings are based on official documentation and pricing research; we haven’t yet completed hands-on testing of every tool.
Our ranking
1ActiveCampaign — Best for client automation
Powerful automation and an agency-friendly partner ecosystem.
Free plan: No free plan. 14-day free trial, no credit card required.
Starting paid price: Check site for current pricing
Read ActiveCampaign review Visit ActiveCampaign (opens official site)
2Brevo — Best multi-account option
Enterprise multi-account management and 10 seats on Professional.
Free plan: Free plan: send up to 300 emails per day once the account is approved for sending. No credit card required to sign up.
Starting paid price: Check site for current pricing
3Mailchimp — Best partner program
Mailchimp & Co program for agencies and freelancers.
Free plan: Free plan for under 250 contacts: max 500 sends/month (250/day), 1 seat, 1 audience; email support for the first 30 days only.
Starting paid price: Check site for current pricing
4GetResponse — Best for full-funnel clients
Funnels, webinars and landing pages for client campaigns.
Free plan: 14-day trial of premium features, then a free account with limitations (e.g. landing pages capped at 1,000 unique visitors/month, GetResponse badge on messages).
Starting paid price: From $19/mo (1,000 contacts, monthly)
Read GetResponse review Visit GetResponse (opens official site)
Quick comparison
| Tool | Best for | Free plan |
|---|---|---|
| ActiveCampaign | Best for client automation | No free plan |
| Brevo | Best multi-account option | Free plan |
| Mailchimp | Best partner program | Free plan for under 250 contacts |
| GetResponse | Best for full-funnel clients | 14-day trial of premium features, then a free account with limitations (e |
Related comparisons
FAQ
What is the best tool for agencies?
Based on official pricing and features checked Oct 18, 2026, our top pick is ActiveCampaign (best for client automation): Powerful automation and an agency-friendly partner ecosystem.
How did you rank these tools?
We weighed: Multi-user access, multi-account management, partner programs and white-label options. Rankings are based on official documentation and pricing research, not paid placement.