Top 12 Open-Source Alternatives to Customer.io

Product categories

API Tools Business & Commerce CMS CRM Communication Customer Support Email Delivery Email Marketing Email Marketing Platforms Newsletter Marketing Sales Transactional Email

Summary

The top open-source alternatives to Customer.io are Opteo, Mailgun, and Postmark. One of the criteria for ordering this list is the number of mentions that products have on reliable external sources. You can suggest additional sources through the form here.

Opteo Landing Page
1

Opteo

Opteo searches for statistically significant patterns in an account and creates "optimization tasks" to improve account performance.
Pricing:
- Open Source
#Email Marketing #Social Media Tools #SEO
Mailgun Landing Page
2

Mailgun

A set of powerful APIs that enable you to send, receive and track email from your app effortlessly whether you use Python, Ruby, PHP, C#, Node.js or Java.
Pricing:
- Open Source
#Email Delivery #Transactional Email #Email Marketing 11 social mentions
Postmark Landing Page
3

Postmark

Postmark is the easiest and most reliable way to be sure your important transactional emails get to the inbox. Simply & reliably parse recieved email to JSON for your webapp.
Pricing:
- Open Source
#Email Delivery #Email Marketing #Email Marketing Platforms 49 social mentions
Sparkpost Landing Page
4

Sparkpost

Deliver your app and website emails on time and to the inbox. Trusted to send 25% of the world's non-spam email. Email delivery for companies big and small.
Pricing:
- Open Source
#Email Marketing #Email Delivery #Email Marketing Platforms 3 social mentions
Zoho Campaigns Landing Page
5

Zoho Campaigns

Smart email marketing software that helps you reach your target audiences, engage in a personalized way, and grow your brand presence.
Pricing:
- Open Source
- Freemium
- $25.0 / Monthly (up to 2500 contacts, unlimited emails)
#Email Marketing #Email Marketinng Automation #Email Workflow
Drift Landing Page
6

Drift

A messaging app that helps you grow your business.
Pricing:
- Open Source
#Customer Support #Help Desk #CRM 1 social mentions
Zoho CRM Landing Page
7

Zoho CRM

Omnichannel CRM for Businesses of all sizes
Pricing:
- Open Source
- Freemium
- Free Trial
- $14.0 / Annually ($14 USD/monthly on Annual Subscription.)
#CRM #Productivity #CMS 1 social mentions
OneSignal Landing Page
8

OneSignal

Customer engagement platform used by over 1 million developers and marketers; the fastest and most reliable way to send mobile and web push notifications, in-app messages, emails, and SMS.
Pricing:
- Open Source
- Freemium
- Free Trial
- $9.0 / Monthly (Plus usage-based costs. (Growth Plan). )
#Mobile Push Messaging #Web Push Notifications #Push Notifications 25 social mentions
Listmonk Landing Page
9

Listmonk

Send e-mail campaigns from a powerful dashboard. High performance and features packed into one app.
Pricing:
- Open Source
- Free
#Newsletter Marketing #Self-Hosted Newsletter #Email Marketing 24 social mentions
monday CRM Landing Page
10

monday CRM

monday sales CRM is a customizable customer relationship management software for every business with support for unlimited leads and accounts and prepaid plans.
Pricing:
- Open Source
- Free
- Free Trial
#Business & Commerce #Communication #CRM
Mailtrain Landing Page
11

Mailtrain

Self-hosted open-source Mailchimp clone
Pricing:
- Open Source
#Email Marketing #Newsletter Marketing #Email Marketing Platforms 2 social mentions
Amazon SES Landing Page
12

Amazon SES

Scale your business email & marketing messages with Amazon Simple Email Service (SES), a cost-effective and reliable cloud email service. Sign up today.
Pricing:
- Open Source
#Email Delivery #Email Marketing #Transactional Email 65 social mentions