Best email marketing tools for agencies in 2025

The ultimate guide to choosing the right email platform for your agency this year

In 2025, email marketing remains one of the highest-performing channels for agencies managing client campaigns, nurturing leads and driving revenue. But with so many platforms available, how do you pick the one that actually supports your agency’s growth?

Whether you’re scaling your client base, looking for better automation or managing multiple accounts under one roof, this list is for you. We’ve ranked the 10 best email marketing tools for agencies in 2025, based on features, scalability, value and agency-friendliness.

1. HighLevel

Best overall email marketing platform for agencies

HighLevel tops the list for a simple reason: it was built specifically for agencies. More than just an email platform, it combines CRM, email marketing, SMS, funnels, automation, reporting and white-labeling into one all-in-one system.

You can create sub-accounts for clients, white-label the platform as your own SaaS and manage full marketing campaigns from a single dashboard.

Key features:

• Unlimited email campaigns and automations

• Drag-and-drop email builder

• AI-powered content tools

• CRM with pipelines and contact tracking

• Fully integrated with forms, calendars, and funnels

• White-label and re-billing features for agencies

• Email + SMS under one roof

• Advanced workflow automation

Ideal for:
Agencies that want a scalable, full-stack platform to manage multiple clients.

2. ActiveCampaign

Best for complex automation flows

ActiveCampaign is known for its powerful logic-based automation. Agencies that need in-depth segmentation and personalized journey-building will find it effective, though it’s more geared toward internal use than multi-client management.

Pros:

• Excellent automation builder

• CRM functionality included

• Dynamic content & conditional logic

Cons:

• No white-labeling

• Limited agency-specific controls

3. Mailchimp

Most recognized brand, good for beginners

Mailchimp remains a go-to choice for startups and small businesses. While not designed for agencies per se, it offers email campaigns, landing pages and some automation features.

Pros:

• Intuitive UI

• Pre-designed templates

• Built-in forms and basic CRM

Cons:

• Limited scalability

• Expensive as lists grow

4. Klaviyo

Best for eCommerce clients

If you serve Shopify or WooCommerce stores, Klaviyo is a strong option. It specializes in product-triggered emails and buyer journey flows.

Pros:

• Ecommerce-specific segmentation

• Revenue-based reporting

• SMS support included

Cons:

• Less flexible for non-eCommerce agencies

• Higher pricing at scale

5. ConvertKit

Best for creator and influencer agencies

ConvertKit is simple, clean and effective, especially for creators and personal brands. It’s less agency-oriented, but great if you manage authors, coaches or online course businesses.

Pros:

• Easy-to-use visual automation

• Solid tagging and segmentation

• Good deliverability

Cons:

• Basic reporting

• No client management tools

6. MailerLite

Best budget option for small agencies

MailerLite is a great starting point for small teams or freelancers. It offers a nice balance of features and simplicity at an affordable price point.

Pros:

• Low cost

• Intuitive email editor

• Landing pages and popups included

Cons:

• Basic automation features

• No advanced reporting or CRM

7. GetResponse

Best for agencies offering webinars

More than just an email tool, GetResponse adds webinar hosting, chat and a full website builder, ideal if you run campaigns around events or educational content.

Pros:

• Webinar and email integration

• AI campaign suggestions

• Autoresponders with logic

Cons:

• Interface is less modern

• Steeper learning curve

8. HubSpot Marketing Hub

Best enterprise-grade tool for large agencies

HubSpot is a leader in the all-in-one marketing space. Its email marketing tools are powerful, but pricing and complexity can make it a better fit for larger, more established agencies.

Pros:

• Deep CRM + email automation

• Excellent analytics and personalization

• Sales enablement tools included

Cons:

• High cost

• Not optimized for client account separation

9. Benchmark Email

Best for simplicity and scalability

Benchmark Email offers a clean interface and solid campaign tools. While it lacks some high-end automation, it works well for agencies running straightforward campaigns at scale.

Pros:

• Easy to use

• Affordable plans

• Survey and poll tools included

Cons:

• Limited advanced segmentation

• No CRM or pipeline tools

10. Moosend

Best up-and-coming option

Moosend offers a modern take on email marketing, with smart automation and strong personalization at a competitive price point. Great for agencies starting to scale.

Pros:

• Affordable entry pricing

• Drag-and-drop automation

• Good email personalization features

Cons:

• Still growing its integrations

• Not designed for multi-account management

11. UpLead 

Best for lead generation and list building 

UpLead is a B2B data provider and offers additional email marketing features such as email verification, making it essential for agencies building high-quality prospect lists. While not an email platform itself, it integrates seamlessly with most email marketing tools to ensure campaigns reach verified, deliverable contacts.

Pros:

• 160+ million verified B2B contacts database

• Real-time email verification technology

• Integrates with major email platforms

Cons:

• Requires separate email marketing platform

• B2B contacts only, no consumer data

Why HighLevel is #1 for agencies in 2025

Here’s what sets HighLevel apart:

• True all-in-one functionality: Email, SMS, CRM, funnels, forms and automation

• Built-in white-label and SaaS-mode features

• Unlimited sub-accounts for client management

• Customizable client reporting dashboards

• No need for Zapier or piecemeal integrations

• Re-billing and upsell opportunities for agencies

Whether you're onboarding your first client or scaling to dozens of campaigns, HighLevel provides a powerful, flexible backbone for your email marketing services.

Final thoughts

The best email marketing platform for your agency depends on your size, niche and workflow but for most, HighLevel delivers the most complete and scalable solution in 2025.

If you're ready to simplify your tech stack, offer better service to clients and grow your recurring revenue, give HighLevel a try today.

Start your free 14-day trial with HighLevel
Unify your client campaigns, reporting and automations in one platform.