Email Marketing — whichsaas.io

Userlist

B2B SaaS-focused platform separating users from companies for team-based onboarding.

$149 – $349/moAutomate user and company lifecycle emails for B2B SaaS products

Plans

Basic — $149/mo
Professional — $349/mo
Enterprise — Custom pricing

Good for

B2B SaaS with team-based onboarding
Products that distinguish users from companies
Lifecycle email with company-level segmentation

Trade-offs

Simple setupComplex setup

Predictable pricingVariable pricing

Hands-offFull control

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Customer.io

Flexible data-driven automation tool for complex event-based workflows.

$100 – $1000/moBuild sophisticated event-driven messaging workflows across channels

Plans

Essentials — $100/mo
Premium — $1000/mo
Enterprise — Custom pricing

Good for

Data-driven teams building complex workflows
Event-based automation across multiple channels
Products needing granular behavioral segmentation

Trade-offs

Simple setupComplex setup

Predictable pricingVariable pricing

Hands-offFull control

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Sequenzy

SaaS-specific tool with native Stripe integration for billing-event automation.

$0 – $49/moTrigger lifecycle emails from Stripe billing events with minimal setup

Plans

Free — $0/mo
Growth — $49/mo

Good for

SaaS products using Stripe for billing
Teams wanting billing-event-triggered emails
Founders needing quick lifecycle email setup

Trade-offs

Simple setupComplex setup

Predictable pricingVariable pricing

Hands-offFull control

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ActiveCampaign

Automation powerhouse with built-in CRM, ideal for sales-led SaaS.

$15 – $79/moCombine email automation with CRM for sales-led growth

Plans

Starter — $15/mo
Plus — $49/mo
Professional — $79/mo

Good for

Sales-led SaaS needing CRM + email in one tool
Teams building complex multi-step automations
Companies wanting built-in deal pipeline management

Trade-offs

Simple setupComplex setup

Predictable pricingVariable pricing

Hands-offFull control

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HubSpot Marketing Hub

All-in-one platform connecting email, CRM, and support.

$0 – $3600/moUnify email, CRM, and customer support on a single platform

Plans

Free Tools — $0/mo
Marketing Hub Starter — $15/mo
Professional — $800/mo
Enterprise — $3600/mo

Good for

Teams wanting marketing, CRM, and support unified
Enterprise B2B with complex sales cycles
Organizations scaling across multiple departments

Trade-offs

Simple setupComplex setup

Predictable pricingVariable pricing

Hands-offFull control

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Resend

Developer-first platform for React/Next.js stacks unifying transactional and marketing emails.

$0 – $90/moSend transactional and marketing emails with a developer-first API

Plans

Free — $0/mo
Pro — $20/mo
Scale — $90/mo

Good for

Developer teams using React or Next.js
Products unifying transactional and marketing emails
API-first teams wanting modern DX

Trade-offs

Simple setupComplex setup

Predictable pricingVariable pricing

Hands-offFull control

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Postmark

High-speed transactional email service with broadcast capabilities.

$0 – $55/moDeliver transactional emails with maximum speed and reliability

Plans

Developer — $0/mo
Basic — From $15/mo
Pro — From $55/mo

Good for

Products where transactional email speed matters most
Teams needing best-in-class deliverability
Developers wanting simple SMTP or API integration

Trade-offs

Simple setupComplex setup

Predictable pricingVariable pricing

Hands-offFull control

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Brevo

Budget-friendly tool charging by emails sent rather than contacts stored.

$0 – $18/moSend marketing and transactional emails affordably at scale

Plans

Free — $0/mo
Starter — $9/mo
Business — $18/mo
Brevo+ — Custom pricing

Good for

Budget-conscious teams with large contact lists
Companies preferring pay-per-email pricing
Teams needing email, SMS, and chat in one tool

Trade-offs

Simple setupComplex setup

Predictable pricingVariable pricing

Hands-offFull control

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MailerLite

User-friendly, affordable tool with drag-and-drop builder for newsletters.

$0 – $20/moCreate and send beautiful newsletters with an easy drag-and-drop builder

Plans

Free — $0/mo
Growing Business — $10/mo
Advanced — $20/mo

Good for

Non-technical teams building newsletters
Small SaaS wanting affordable email marketing
Content creators needing drag-and-drop simplicity

Trade-offs

Simple setupComplex setup

Predictable pricingVariable pricing

Hands-offFull control

Visit website