By Theo Brandt ยท Updated

SaaS Email Platforms Directory: 15 Tools and Prices

Fifteen email platforms that SaaS buyers shortlist, each with what it is for and the price its own pricing page shows. Use the cards to find a vendor, then the category pages to choose between neighbours.

Prices checked 7 October 2026; each price links to the vendor page it came from. The list mixes four kinds of tool: lifecycle platforms that react to product events, developer APIs that send what your code asks, broader marketing suites, and cross-channel engagement platforms sold by quote. A price for one kind is not directly comparable with another, so the cards say what each price counts.

Customer.io

Lifecycle and cross-channel

Sends journeys based on events from your product and can mix email, push, in-app, WhatsApp and SMS in one flow. The pricing page ladders from Essentials at $100 a month for 5,000 profiles to Premium from $1,000 a month billed yearly.

Event-driven journeysMulti-channelPublic price ladderUS and EU data centers
Essentials $100/mo at 5,000 profiles Pricing page

Customer.io vs Braze

Userlist

B2B SaaS lifecycle

Treats the company as its own record, so you can message every teammate during onboarding and only the account owner at renewal. Basic covers up to 10,000 users and Professional adds split testing, conversion goals and advanced workflows.

Company-level segmentsIn-app messagesTransactional emailPer-user billing
Basic $149/mo up to 10,000 users Pricing page

Userlist alternatives

Loops

Small-team lifecycle

One interface for campaigns, event-triggered loops and transactional sends. The free plan keeps unlimited contacts but only sends 4,000 emails in a rolling 30 days to the 1,000 newest of them, and paid plans scale with subscribers.

WorkflowsTransactional endpointNo seat feeSubscriber pricing
Free tier; $99/mo at 10,000 subscribers Pricing page

Loops alternatives

Encharge

Behavior automation

A visual flow builder that triggers on what people do, with Segment, Stripe, Chargebee, HubSpot and Salesforce in its integration list. Growth is $99 a month at 2,000 subscribers; Premium adds CRM syncs and transactional email.

Visual flowsBehavior segmentsBilling integrationsWebhooks
Growth $99/mo at 2,000 subscribers Pricing page

Encharge alternatives

Resend

Developer email API

REST API, SMTP relay and React Email templates, plus a Marketing tab with broadcasts and automations on contact-based plans. Free covers 3,000 emails a month at 100 a day; Pro starts at $20 a month for 50,000 emails.

REST APIReact EmailSMTP relayMarketing plans
Free; Pro $20/mo for 50,000 emails Pricing page

Resend alternatives

Postmark

Transactional email

Transactional sending with separate message streams. Its slider reads $15 a month for 10,000 emails on Basic and $55 at 50,000, which is dearer than most rivals, in return for traceability and longer retention.

Message streamsActivity retentionWebhooksFree 100/mo
Basic $15/mo for 10,000 emails Pricing page

Postmark alternatives

SendGrid

High-volume sending

Twilio's email API, sold next to a separate Marketing Campaigns product. After a 60-day trial at 100 emails a day, Essentials starts at $19.95 a month and Pro at $89.95.

Email APIMarketing CampaignsHigh volumeTwilio account
Essentials from $19.95/mo Pricing page

SendGrid alternatives

Mailgun

Developer email API

A sending API with inbound routing, email validation, dedicated IPs and US or EU hosting. Basic is $15 a month for 10,000 emails and Foundation is $35 for 50,000, with log retention that grows from one day to thirty by plan.

Inbound routingValidationEU regionDedicated IPs
Basic $15/mo for 10,000 emails Pricing page

Mailgun vs SendGrid

Braze

Enterprise engagement

Cross-channel engagement across email, push, SMS and messaging apps, sold in Go, Select, Pro and Enterprise editions. Billing is based on monthly active users plus usage credits, and the price comes from a quote.

Multi-channelEditions by quoteMAU billingUsage credits
Sold by quote Pricing page

Braze alternatives

ActiveCampaign

CRM and automation

Marketing automation with a built-in CRM for teams where sales follows up leads. At 1,000 contacts, billed annually, Starter is $15, Plus $49, Pro $79 and Enterprise $145 a month; Starter is limited to one user and five actions per automation.

Built-in CRMAutomationsLanding pagesContact-based pricing
Starter $15/mo at 1,000 contacts Pricing page

ActiveCampaign alternatives

HubSpot

Marketing and sales suite

Email sits inside a suite with CRM, forms and sales tools. The marketing pricing page lists Starter at $7, Professional at $800 and Enterprise at $3,600 a month, billed annually, with automation limits that rise by edition.

CRM includedForms and pagesEdition-based limitsPublished DPA
Marketing Hub Starter $7/mo, billed annually Pricing page

HubSpot alternatives

Klaviyo

Commerce-focused email

Built for online stores, which is why it shows up when SaaS buyers search broadly. Its free plan covers 250 active profiles and 500 sends; the email plan is $20 at 500 profiles, $60 at 2,500 and $150 at 10,000.

Store integrationsProfile pricingFree to 250 profilesSegmentation
Email from $20/mo at 500 profiles Pricing page

Klaviyo alternatives

Drip

Commerce automation

Workflow automation aimed at online stores, which some SaaS and subscription businesses use as well. A 14-day trial leads to $39 a month for up to 2,500 people, $89 at 5,000 and $154 at 10,000, with unlimited email sends.

Unlimited sendsWorkflowsSegments14-day trial
$39/mo for up to 2,500 people Pricing page

Drip alternatives

Kit (ConvertKit)

Creator email

Formerly ConvertKit, aimed at creators and course sellers. The free plan runs to 10,000 subscribers with unlimited broadcasts, while automations and sequences start on Creator at $33 a month billed yearly for 1,000 subscribers.

Free to 10,000Sequences on CreatorLanding pagesCreator tools
Free to 10,000; Creator $33/mo at 1,000 (yearly) Pricing page

Kit (ConvertKit) alternatives

Brevo

Budget all-rounder

Email, SMS and CRM tools on tiered plans. Free allows 300 emails a day for up to 100,000 contacts, Starter begins at $9 a month for 5,000 emails and Standard at $18 adds automation and A/B testing.

Free planSMSCRMDaily send cap on Free
Free; Starter from $9/mo Pricing page

Budget-friendly platforms

What a list of 10,000 contacts costs a month

Platform Monthly price at 10,000 What is counted
Resend (Marketing) $80 Contacts; unlimited broadcast sending
Loops $99 Subscribers; transactional included
Kit (Creator, billed yearly) $116 Subscribers
Customer.io (Essentials) $145 Profiles; one million sends included
Userlist (Basic) $149 Users, up to 10,000
Klaviyo (Email) $150 Active profiles
Drip $154 People on the list
Encharge (Growth) $249 Subscribers

How to use this directory

Start from the job, not the logo. If the next email is caused by something a customer did, open lifecycle email, where Customer.io, Loops, Userlist and Encharge are compared on the same list sizes. If engineers will send receipts and resets from code, open developer-first platforms for Resend, Postmark, Amazon SES, Mailgun and SendGrid. If a security reviewer or a push and SMS program is driving the purchase, open enterprise platforms.

The table above shows why a name alone is not enough: Resend's marketing plan, Loops and Customer.io all land within $65 of each other at 10,000 contacts, yet one counts contacts with unlimited broadcasts, another includes transactional sends in the price, and a third includes a million email sends. Read what each price counts before ranking by number. For head-to-head detail, the Customer.io vs Loops and Loops vs Resend pages work through the same comparison, and the category hub lists every group.