Best Free Email & Automation Software for Agency Enterprises
We narrowed 583 tracked tools down to 3 email & automation picks that fit this scenario, priced from $20 to $45/mo, with 3 offering a free plan.
Editor's Strategic Vetted Verdict
We compared the 3 email & automation tools that passed the filters on this page. Bird is our top pick — it has a genuinely usable free tier, earns a 4.6/5 editor score, and its omnichannel flow automation builder is what pushed it ahead. If that is more than you need, Klaviyo has a genuinely usable free tier and covers the basics well with its deep shopify/woocommerce real-time integrations.
We track 583 marketing tools in our index, and 3 of them fit email & automation for agencies, enterprises, a zero budget. Paid entry ranges from $20 to $45/mo. 3 tools run a free plan, so you can pilot the workflow before paying. You will find api, cloud options in this list. For agencies, client reporting, multi-workspace management, and white-label options carried the most weight.
Email & Automation Tools at a Glance
| # | Tool | Editor Score | Starting Price | Free Option |
|---|---|---|---|---|
| 1 | Bird | 4.6/5 | Free | Free plan |
| 2 | Klaviyo | 4.3/5 | $45/mo | Free plan |
| 3 | HubSpot Marketing Hub | 4.3/5 | $20/mo | Free plan |
Bird
An enterprise-grade cloud communications giant (formerly MessageBird) offering high-volume SMS, WhatsApp, Email, and Voice APIs.
Klaviyo
The premier ecommerce marketing automation platform specialized in deep database personalization.
HubSpot Marketing Hub
A high-performance EMAIL marketing tool designed to optimize campaign metrics, automate database workflows, and drive commercial conversions.
Our Vetting Methodology & E-E-A-T Standards
Verified by the MKTBee Editorial Board
To assemble these Email & Automation software recommendations, our editorial board conducts rigorous practitioner vetting. We buy active accounts, mock real-world MarTech pipelines, test API throughput, and cross-examine user experiences against verified reviewer directories.
We do not accept placement sponsorships. Our editorial rating score is deterministic, derived by assessing starting pricing models, feature availability (like data extraction limits, workflow nodes, or user access seats), deployment type, and vendor response SLA benchmarks.
Vetted Scenario Insights (FAQ)
QWhat is the best Email & Automation tool for agency right now?
We rank Bird first here (4.6/5). Has a genuinely usable free tier, and it leads on omnichannel flow automation builder. Klaviyo is the runner-up if you want a lighter or cheaper option.
QAre there free email & automation options for agency?
Yes — 3 of the 3 tools here run a free plan: Bird, Klaviyo, HubSpot Marketing Hub. Free tiers usually cap seats, projects, or monthly volume, so treat them as a way to pilot the workflow rather than a permanent setup.
QHow do we score these tools?
Our editor score is built from the same signals for every tool: starting price and pricing model, feature depth, deployment options, integrations, and documented support levels. We do not take paid placements, so ranking order is not for sale.