The Best Email Marketing Software for SaaS Companies (Compared)

SaaS email is different from ecommerce or newsletter email. The messages that matter most, onboarding, activation, trial conversion and re-engagement, are triggered by what users do inside your product. That means the right email marketing software for a SaaS company is the one that can receive product events and act on them, not just send broadcasts to a list.

We compared the email marketing platforms most often recommended for SaaS teams, looking at how each handles product data, automation, and who it suits best. Pricing changes frequently and depends on your contact or event volume, so confirm current plans on each vendor's site.

What to look for in SaaS email marketing software

• Event-based triggers: can it start, branch and stop journeys based on product events such as "created first project"?
• Data connections: does it integrate with your product analytics, CRM, billing and data warehouse?
• Segmentation: can you segment by plan, usage, account and lifecycle stage?
• Multi-channel: do you need in-app messages, push or SMS alongside email?
• Pricing model: is it priced by contacts, profiles, events or send volume? This changes the cost dramatically as you grow.
• Team fit: how technical is the team who will build and maintain journeys?

Quick comparison

Tool	Best for	Strength
Customer.io	Product-led SaaS with engineering support	Event-driven, flexible journeys
Loops	Early-stage and modern SaaS teams	Simple, built for SaaS email
HubSpot Marketing Hub	Teams already on HubSpot CRM	Marketing and sales in one place
ActiveCampaign	Marketing-led SaaS needing deep automation	Powerful automation builder
Braze	Scaled SaaS with large user bases	Cross-channel at enterprise scale
Intercom	Teams wanting email, in-app and support together	Combined messaging and support
Brevo	Cost-conscious teams with large lists	Volume-based pricing
Userlist	B2B SaaS that sells to companies, not individuals	Account-level lifecycle email

1. Customer.io

Best for: product-led SaaS companies that want flexible, behaviour-driven messaging.

Customer.io is built around people and events rather than lists and campaigns. You send product events from your app, then build journeys that branch on what users do. It also supports in-app messages, push and SMS. It is very powerful, but you will get the most from it with engineering help to set up clean event tracking. Public reviews list paid plans starting around $100 per month for smaller volumes.

2. Loops

Best for: early-stage and fast-moving SaaS teams.

Loops is designed specifically for SaaS email, covering product updates, onboarding sequences and transactional email in a clean, simple interface. It is easier to set up than heavier platforms, which makes it a strong first lifecycle tool for smaller teams.

3. HubSpot Marketing Hub

Best for: SaaS companies already using HubSpot as their CRM.

If sales and marketing already live in HubSpot, its Marketing Hub keeps email, forms, lead scoring and reporting in one place. It is strongest for marketing and sales-led journeys. For deep product-behaviour triggers, you will need to pipe product events into HubSpot or pair it with a product-focused tool.

4. ActiveCampaign

Best for: marketing-led SaaS teams that need sophisticated automation.

ActiveCampaign is frequently recommended for its visual automation builder, with many triggers and the ability to split-test whole automation paths. The trade-off is a steeper learning curve, so budget time for setup.

5. Braze

Best for: scaled SaaS products with large user bases and multiple channels.

Braze is an enterprise customer engagement platform covering email, push, in-app and SMS with real-time segmentation. It is powerful and built for scale, and is usually priced for larger companies with dedicated lifecycle teams.

6. Intercom

Best for: teams that want onboarding messages, in-app tours and customer support in one platform.

Intercom combines in-app messaging, product tours, email and its support inbox. It is a natural choice when onboarding and support are closely linked, though dedicated email platforms usually offer deeper email journey building.

7. Brevo

Best for: cost-conscious teams with large contact lists.

Brevo, formerly Sendinblue, prices mainly by email volume rather than contact count, which can be cheaper for SaaS products with many users who are not emailed every month. It covers automation, transactional email and SMS.

8. Userlist

Best for: B2B SaaS where the customer is a company with several users.

Userlist is built around both users and the companies they belong to, so you can trigger messages based on account-level behaviour, for example when a team reaches a milestone, not just an individual. That fits B2B SaaS lifecycle work particularly well.

How to choose

1. Product-led with engineering support? Start with Customer.io or Loops.
2. Sales-led and already on HubSpot? Use HubSpot Marketing Hub, and add product events.
3. B2B with multi-user accounts? Look closely at Userlist or Customer.io's account features.
4. Scaled, multi-channel and well-funded? Evaluate Braze.
5. Budget-sensitive with a large list? Compare Brevo's volume-based pricing.

Whichever tool you choose, results depend more on the journeys you build and the data you feed them than on the platform. Our guide to the 9 lifecycle emails every SaaS product needs is a good starting point.

FAQ

What is the best email marketing software for SaaS?

There is no single best option. Customer.io and Loops suit product-led SaaS, HubSpot suits teams on HubSpot CRM, and Braze suits large multi-channel programmes. Choose based on your growth motion and data setup.

Do SaaS companies need a separate tool for transactional email?

Not always. Several platforms, including Customer.io, Loops and Brevo, handle both marketing and transactional email. Larger teams sometimes keep them separate for deliverability and engineering control.

Can we switch email platforms later?

Yes, but migrations take time: journeys need rebuilding and event tracking re-pointing. Choosing a tool that fits your next two years of growth saves effort.

Need help designing lifecycle journeys that work in whichever tool you choose? See our SaaS email and lifecycle marketing service.

Tool details were gathered from vendor information and public reviews at the time of writing and change frequently. Rapid North has no commercial relationship with the vendors listed.