Customer.io is a software platform designed to enhance customer engagement. It enables businesses to send targeted and personalized emails, notifications, and SMS to prospects and customers. The tool aids in boosting the engagement rate throughout the customer journey. Its features include segmentation, automation, and real-time analytics, providing businesses with valuable insights into customer behavior. Customer.io aims to improve customer retention and conversion rates, ultimately driving business growth.

  • 01Pros and cons from reviewers
  • 02Main features
  • 03What is Customer.io?
  • 04How Customer.io compare to similar software?
  • 05Who is Customer.io best for according to our reviewers?
  • 06Customer.io Reviews

What is Customer.io?

Customer.io is a powerful SaaS solution that automates marketing, sales, and customer service processes. It allows businesses to create targeted campaigns, nurture prospects, onboard new customers, and launch upsell and cross-sell campaigns. The platform enables automated workflows that respond to customer behavior, providing a seamless experience that keeps customers engaged. It also offers detailed analytics and reporting to measure campaign success and optimize marketing efforts. Through Secret, businesses can access exclusive deals on SaaS solutions like Customer.io, saving costs while enhancing their marketing, sales, and customer service processes.

Pros from reviewers

  • Email campaign automation: The software is appreciated for its simplicity in setting up an email campaign and automating it based on different user attributes. It's also the primary tool for onboarding new users through easily set up email campaigns

  • Powerful and comprehensive: Despite a steep learning curve, users find Customer.io to be incredibly powerful once they get the hang of it. It enables them to accomplish tasks that seemed impossible with other email clients. The drag and drop editor is superior and operates more smoothly than others.

  • Exceptional customer service: Customer.io is commended for its exceptional customer service. The account representative is always available for assistance and consultations, adding value to the relationship with the user

  • Excellent UX/UI: Users find the platform's UX/UI to be excellent, the best among the email senders they use. The UI/UX is described as very smooth and clean, standing out among competitors

  • User-friendly nature: Customer.io is praised for its user-friendly nature, making it a favorite tool for many users. It's used daily as a main communication tool with clients, informing them about new features, products, and significant software changes

Cons from reviewers

  • Limited template creation: The platform's template creation is quite limited, forcing users to use other software and export the HTML code to Customer.io

  • Messy contact database: The contact database can be disorganized and messy, making it difficult to manage contacts effectively

  • Requires a dedicated developer: The software is not very user-friendly and requires a dedicated developer for managing complex campaigns

  • Steep learning curve: The platform has a steep learning curve, making it initially overwhelming due to its numerous features

  • Expensive: Despite its powerful features, the software is somewhat expensive which may not be affordable for all businesses.

12 months free for Startup Basic Plan on Customer.io

Get 12 months free for Startup Basic Plan on Customer.io and up to $1,800 savings with Secret.

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Main features

Starting Price

$100

/ month

Free Plan

No

Reporting and analytics

Behavioral tracking

Segmentation

Automated workflows

Integration and API

12 months free for Startup Basic Plan on Customer.io

Get 12 months free for Startup Basic Plan on Customer.io and up to $1,800 savings with Secret.

Get Customer.io deal

Both Customer.io and SendGrid are well-regarded platforms in the email marketing space, offering an array of tools designed to improve engagement through targeted communication. At their core, both provide essential features such as automation, segmentation, and performance analytics. However, the key differences between them stem from the additional functionalities they offer beyond these basics.


Customer.io is notable for its advanced customer segmentation and behavior-driven automation capabilities. It excels in creating highly personalized customer experiences by utilizing real-time data and complex trigger-based workflows. This enables businesses to send contextually relevant emails based on specific user actions or changes in their data profile. Additionally, Customer.io integrates seamlessly with mobile and web apps, allowing for cohesive messaging across various channels which is particularly beneficial for tech-savvy startups and SaaS companies looking to maintain a high...

logo customer.io

Customer.io

Communication and marketing automation platform

12 months free for Startup Basic Plan on Customer.io

Save up to $1,800

Get Customer.io deal
logo sendgrid

SendGrid

Marketing and transactional email delivery service.

When comparing HubSpot and Customer.io, it's crucial to understand their key differences to make an informed choice for your business. The main point of distinction between the two platforms is their focus and range of features.


HubSpot is an all-in-one marketing, sales, and service platform designed to provide comprehensive solutions for businesses seeking to streamline their operations. It offers an integrated CRM system, making it easy to manage contacts, track interactions, and automate workflows across multiple departments. HubSpot excels in inbound marketing, offering tools for content creation, SEO optimization, social media management, and detailed analytics. This makes it ideal for businesses looking for a holistic approach to manage their customer interactions and marketing efforts across various channels.


In contrast, Customer.io specializes in email marketing automation and personalized messaging. It is particularly well-suited for businesses that want to engage customers...

logo customer.io

Customer.io

Communication and marketing automation platform

12 months free for Startup Basic Plan on Customer.io

Save up to $1,800

Get Customer.io deal
logo hubspot

HubSpot

CRM, marketing automation & customer service software suite

75% off for 1 year on HubSpot

Save up to $7,000

Get HubSpot deal

Who is Customer.io best for according to our reviewers?

  • Tech-Savvy Non-Developers: Customer.io is a perfect fit for tech-savvy non-developers as it balances being a visually appealing platform with limited customization and a comprehensive tool that needs significant developer support. It allows them to manage onboarding, loyalty processes, and much more

  • Dissatisfied Users: Some users may find Customer.io not very user-friendly and may experience issues with the delivery rate of notifications, customer support, and high integration costs. Despite these issues, they may still find value in its email automation capabilities.

  • Marketing Teams: These teams can utilize Customer.io for its user-friendly nature and excellent UI/UX. It allows them to set up and automate email campaigns based on different user attributes, making it a valuable tool for communication with clients and onboarding new users

  • SaaS Businesses: Customer.io is highly suitable for SaaS businesses as it's easy to integrate with data sources like Segment and straightforward to access attributes and events. It's perfect for running onboarding or lead nurturing campaigns

  • Lead Nurturing Teams: Teams that focus on lead nurturing can use Customer.io for its user experience, documentation, and customer support. It can be complex depending on their needs, but the excellent user experience, documentation, and support team provide solutions

  • 12 months free for Startup Basic Plan on Customer.io

    Get 12 months free for Startup Basic Plan on Customer.io and up to $1,800 savings with Secret.

    Get Customer.io deal

    Customer.io Reviews

    4.5

    Customer.io rating

    4.4

    Ease of use

    4.7

    Customer service

    4.4

    Value for money

    4.5

    Likelihood to recommend

    4.4

    Features

    24 Customer.io Reviews

    4.5 (24 reviews)
    Leave a review
    • Nicole

      Valuable Insights: Customer.io's Detailed Reports Enhance Sales Strategies

      As a sales manager, I am impressed with the detailed reports generated by Customer.io. They provide valuable insights that help us improve our sales strategies

      September 14, 2024

    • Marilyn F

      Excellent Email Tool for Customers, Content Creation Could Be Better

      I've been using Customer.io for nearly three months and it has completely revolutionized the way our SaaS business communicates with our customers. It's been instrumental in onboarding new customers, re-engaging lapsed users, and announcing new features. Creating a sequence of emails triggered by specific events like sign-ups, upgrades, or cancellations is simple and can be easily applied to individual customer segments, although it does require some understanding of logic. Creating one-time mailings to a group of customers based on certain criteria is also straightforward once the segments are defined. Compared to MailChimp, which we previously used, Customer.io is far superior. The integration with our software product is easy and the API for updating customer profiles and posting events is very useful. However, Customer.io does have its shortcomings, particularly in the content creation department. The text editor is not as good as the rest of the application and requires a lot of manual HTML manipulation to get emails and newsletters looking just right.

      September 7, 2024

    • Grey G

      Scalability and Performance: A Startup Founder's Perspective on Customer.io

      As a startup founder, I appreciate the scalability of Customer.io. It has been able to accommodate our growing needs without compromising performance

      August 31, 2024

    • Nathan Smith

      Outstanding SAAS Solution: Customer.io

      I find Customer.io to be highly suitable for SAAS products like ours. It's easy to integrate our data sources like Segment, and it's straightforward to access attributes and events. It's perfect for running onboarding or lead nurturing campaigns. Compared to other products I've used, it's the simplest. The dashboard is also very quick, even with a lot of data, and not clunky at all. This enables me to create and send campaigns much faster. However, the dashboard does contain quite a few jargons, which can be somewhat confusing. It would be beneficial if there were more explanations on certain features. Some of their best features are easy to miss because they are hidden. I switched to Customer.io because it's much easier to use, and the interface is much quicker. In comparison, ActiveCampaign was very slow and clunky.

      August 27, 2024

    • Samuel R

      Essential Marketing Campaign Tool for Startups, Scaleups and E-commerce

      I find the UI/UX of Customer.io to be excellent and intuitive, filled with numerous features and channels. It's versatile, catering to a wide range of users, from beginners to advanced, and allows for complex possibilities. However, setting up our dedicated preference center was time-consuming and resource-intensive, and it disrupted native campaign tracking and the native unsubscribe button. They are, however, working on a new feature to address this issue. Another challenge is data analysis. While there are many interesting data points, extracting specific behavior or data points can be difficult. They are aware of this and are working on improving this aspect of the product. I chose Customer.io for its core product strength, impressive UX, and competitive pricing.

      August 20, 2024

    • Merrick D

      Effective Tracking Capabilities for CRM Managers: A Customer.io Review

      As a CRM manager, I find the tracking capabilities of Customer.io very helpful. It allows us to monitor customer behavior and adjust our strategies accordingly

      August 10, 2024

    • Zachary Martinez

      Customer.io: User-Friendly Interface

      As a user of Customer.io, I am impressed with its user-friendly interface. Even without a technical background, I was able to navigate through the software with ease

      August 6, 2024

    • Robert

      An Ideal Tool for Tech-Savvy Marketers without Coding Skills

      I've tried many marketing automation tools and customer.io perfectly meets my needs as a tech-savvy non-developer. It balances being a visually appealing platform with limited customization and a comprehensive tool that needs significant developer support. It lets me manage onboarding, loyalty processes, and much more. I'm pleased that I haven't yet found its limitations. If a feature isn't immediately available, the platform is flexible enough for me to find a workaround. Their customer support is praiseworthy, a real win! However, it could use better filtering and search options, as the segments, campaigns, and attributes can get chaotic if multiple people use it for different purposes. The learning curve was somewhat steep, and while the knowledge base and customer support were helpful, I would have liked some video tutorials or onboarding experience. I switched to Customer.io because it offered more customization and focused more on workflow than design.

      July 29, 2024

    • Irene R

      Real-Time Data and Analytics with Customer.io

      As a business owner, I appreciate the real-time data and analytics provided by Customer.io. It helps me make informed decisions about our marketing strategies

      July 22, 2024

    • Renata M

      My Top Pick for Email Automation: Customer.io

      This is my preferred email automation service. It was somewhat difficult to understand initially, but they offer incredible support.

      July 15, 2024

    1 to 10 of 24 results

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