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BigMailer
Email marketing platform designed for agencies and businesses to manage multiple brands and campaigns.
Freemium
View Details Best Tools for Agencies 2026
Updated: February 2026
Professional tools for marketing, design, and creative agencies. Manage clients, projects, and deliverables at scale. We've curated 14 tools specifically suited for agencies.
Key Takeaways
- BigMailer is our #1 pick for transactional email for agencies in 2026.
- We analyzed 14 transactional email for agencies tools to create this ranking.
- 12 tools offer free plans, perfect for getting started.
- Average editorial score: 42/100 - high-quality category.
14 Transactional Email Tools for Agencies
2
Listmonk
Self-hosted, open-source platform for managing newsletters, mailing lists, and transactional messages.
Free
View Details 3
Plunk
The open-source, affordable email platform for marketing, transactional, and broadcast emails.
Freemium
View Details Elastic Email
Modern email communication platform for growing businesses, offering marketing, transactional, and team chat solutions.
Freemium
View Details Spently
Transform basic Shopify notifications into branded, sales-driving emails with product recommendations.
Freemium
View Details 
Mailtrap
Modern email delivery and testing for developers and product teams, ensuring fast delivery and high inboxing rates.
Freemium
View Details 
Best Transactional Email for Other Use Cases
Frequently Asked Questions
What is the best transactional email tool for agencies?
Based on our analysis, BigMailer is the top choice for agencies, with a score of /100.
Are there free transactional email tools for agencies?
Yes! BigMailer, Listmonk, Plunk offer free plans suitable for agencies.