Best Email Marketing Software for Agencies
The 5 email marketing software we recommend if you're running a team that delivers services to multiple clients — independently scored on the same five-criterion rubric, filtered to the picks that actually fit how you work.
Short answer
The best email marketing software for agencies and small teams are ActiveCampaign, Klaviyo, Omnisend. ActiveCampaign is our top pick at 8.8/10. If budget is tight, Klaviyo has the best free plan.
Our top picks for agencies
ActiveCampaign
8.8/10
Highest-scoring pick at 8.8/10 — best for Agencies running email marketing for clients.
- ✓Best-in-class email automation at mid-market price
- ✓Powerful conditional logic and segmentation
Brevo
8.2/10
Strongest capability-per-dollar — value score 9/10.
- ✓Most generous free plan in email marketing — unlimited contacts
- ✓Email + SMS + WhatsApp + CRM in one platform
Klaviyo
8.7/10
Start at $0 and upgrade only when you outgrow it.
- ✓Unmatched Shopify integration — pulls real-time store data
- ✓Powerful segmentation using purchase behavior and predictive analytics
All 5 email marketing software for agencies, ranked
ActiveCampaign
Top pickMarketing automation and CRM for growing businesses
ActiveCampaign is the most powerful email marketing automation platform in its price range. Deep segmentation, conditional logic, site tracking, and a full CRM. The go-to for agencies running marketing campaigns for clients and for businesses with complex customer journeys.
Strengths
- ✓Best-in-class email automation at mid-market price
- ✓Powerful conditional logic and segmentation
- ✓Built-in CRM with pipeline
Watch-outs
- ✗Steep learning curve
- ✗UI is complex
- ✗No free plan
Klaviyo
Email and SMS marketing built for e-commerce growth
Klaviyo is the e-commerce email and SMS marketing platform — the deepest Shopify, WooCommerce, and BigCommerce integration available. It pulls purchase history, browsing behavior, and cart abandonment data directly from your store to power precise segmentation and automated flows. Abandoned cart recovery, post-purchase sequences, and predictive analytics are its core strengths. Less relevant for pure creator or service businesses with no product catalog.
Strengths
- ✓Unmatched Shopify integration — pulls real-time store data
- ✓Powerful segmentation using purchase behavior and predictive analytics
- ✓Email + SMS in one platform with unified customer profiles
Watch-outs
- ✗Pricing scales steeply with contact list size
- ✗Overkill for non-e-commerce businesses
- ✗Steeper learning curve than Mailchimp
Omnisend
Email and SMS automation built for e-commerce
Omnisend is an email and SMS marketing platform purpose-built for e-commerce brands, competing directly with Klaviyo. It offers pre-built automation workflows for abandoned cart, welcome series, browse abandonment, and post-purchase sequences — with deep Shopify and WooCommerce integration. The free plan is generous at 500 emails per month with no contact limit, and includes SMS credits. Omnisend is generally considered easier to use than Klaviyo with competitive pricing at lower list sizes.
Strengths
- ✓Generous free plan — 500 emails and SMS credits with unlimited contacts
- ✓Easier to use than Klaviyo while offering similar e-commerce automation
- ✓Pre-built automation workflows for all major e-commerce scenarios
Watch-outs
- ✗Less advanced segmentation than Klaviyo at scale
- ✗Predictive analytics and A/B testing more limited than Klaviyo
- ✗Not suitable for non-e-commerce businesses
Brevo
Email, SMS, and CRM — generous free tier, European-grade privacy
Brevo (formerly Sendinblue) is a full-featured marketing platform covering email, SMS, WhatsApp, live chat, and a lightweight CRM. Its free plan is exceptionally generous: unlimited contacts with up to 300 emails per day — more than enough for a growing list. Brevo is a European company with strong GDPR compliance built in, making it the go-to choice for EU businesses or any team prioritizing data privacy.
Strengths
- ✓Most generous free plan in email marketing — unlimited contacts
- ✓Email + SMS + WhatsApp + CRM in one platform
- ✓Strong transactional email capabilities
Watch-outs
- ✗Daily send limit on free plan (300/day) limits large campaigns
- ✗UI less polished than Mailchimp or ActiveCampaign
- ✗Creator-specific features lag behind beehiiv or ConvertKit
Mailchimp
The world's most popular email marketing platform
Mailchimp is the most widely used email marketing tool globally, known for its ease of use and large integration ecosystem. Best for businesses that want a familiar, beginner-friendly option — though competitors now outperform it on value and creator-specific features.
Strengths
- ✓Integrates with virtually everything
- ✓Beginner-friendly drag-and-drop editor
- ✓Large knowledge base and community
Watch-outs
- ✗Expensive compared to alternatives at scale
- ✗Free tier very limited (500 contacts)
- ✗Creator features lag behind beehiiv/ConvertKit
Email Marketing Software for agencies, compared
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Frequently asked questions
What is the best email marketing software for agencies?
ActiveCampaign is our top pick at 8.8/10 — the strongest fit if you're running a team that delivers services to multiple clients.
What's the best free email marketing software for agencies?
Klaviyo offers the best free plan in this list — a genuine way to get going at $0.