--- title: "Customer.io Reviews, Pros and Cons - 2026 Software Advice" description: "Reviews of Customer.io. Learn how real users rate this software's ease-of-use, functionality, overall quality and customer support. Talk to our advisors to see if Customer.io is a good fit for you!" source_url: "https://www.softwareadvice.com/crm/customer-io-profile/reviews/" page_type: "reviews" language: "en" --- 1 million+ businesses helped. Get advice Get Free Advice [Home](https://www.softwareadvice.com/) / [Marketing Automation Software](https://www.softwareadvice.com/marketing/automation-comparison/) / [Customer.io](https://www.softwareadvice.com/crm/customer-io-profile/) / Customer.io Reviews Software Advice offers objective insights based on verified user reviews and independent product and market research. When our advisors match you to a software provider, we may earn a referral fee. [Overview](https://www.softwareadvice.com/crm/customer-io-profile/) Reviews [Alternatives](https://www.softwareadvice.com/crm/customer-io-profile/alternatives/) # Customer.io User Reviews ## Reviews summary - Overall rating: 4.7/5 - Total reviews: 87 ### Secondary ratings - Ease of use: 4.3/5 - Customer support: 4.5/5 - Value for money: 4.3/5 - Functionality: 4.3/5 ### Rating distribution - 5 stars: 63 reviews (72%) - 4 stars: 21 reviews (24%) - 3 stars: 2 reviews (2%) - 2 stars: 0 reviews (0%) - 1 star: 1 reviews (1%) ### Most mentioned pros - Its complete environment, allowing you to perform all your marketing, newsletter and scripting tasks with ease - Very configurable, good tracking of comms, including Human vs Machine Opened statuses on emails. - It’s reliable and scalable, though it takes effort to master, and pricing can be steep for newcomers. ### Most mentioned cons - Some of the UI choices over time have become worst, like elements covering crucial elements (eg. minimap when editing an email), and their push to become more of a CDP than a marketing software has made the platform more cluttered for those who, like me, want to use it for marketing automation. - Lack of options for email design in comparison to other platforms. - Template editing is also not straightforward for non-power-users. ## Customer.io customer reviews Showing reviews 1-25 of 87 (page 1). ### I still love customer.io - Overall rating: 5/5 - Reviewer: Aifton C. - Verified reviewer: Yes - Industry: Food & Beverages - Company size: 51-200 employees - Product usage: Used daily for less than 12 months - Reviewed: January 2026 - Review source details: This reviewer was invited by us to submit an honest review and offered a nominal incentive as a thank you. Still overall very positive and I would continue to recommend customer.io to other marketing professionals #### Ratings breakdown - Ease of use: 5/5 - Customer support: 5/5 - Functionality: 3/5 #### Pros I’m still loving how easy it is to segment out audiences and schedule sins in the platform. Recent AI upgrades have also made work seamless. #### Cons I still wish there was a higher file, upload capacity and more video options for emails, but I understand that different platform have different limitations --- ### Review of Customer.io from avid user - Overall rating: 5/5 - Reviewer: Drew H. - Verified reviewer: Yes - Industry: Health, Wellness and Fitness - Company size: 11-50 employees - Product usage: Used daily for less than 2 years - Reviewed: June 2023 - Review source details: This reviewer was invited by us to submit an honest review and offered a nominal incentive as a thank you. We love it. It surpasses all of the cheaper options and plugs into our product in a way more efficient way. I regularly recommend it to friends in similar sized businesses. #### Ratings breakdown - Ease of use: 5/5 - Value for money: 4/5 - Customer support: 5/5 - Functionality: 4/5 #### Pros Functionality is really great. It is easy to use, and the flow of setting up campaigns and broadcasts makes perfect sense. I've used the drag and drop as well as uploaded HTML into different campaigns. Testing is good, the omni channel approach all in one section is super helpful. It's built like a marketing manager had a say but a developer and engineer understood all the actual requirements. #### Cons Analytics and the reporting, as mentioned previously. The conversion rate should be more adjustable to show people who entered journeys and converted vs just how many emails were sent and conversions. It makes changing up campaigns a little tougher, but still doable with exports and managing the analytics manually. #### Reasons for choosing Customer.io This was recommended by a colleague who had used it previously, and we bought in right away. #### Reasons for switching to Customer.io Too many different little tools when everything is built into Customer.io --- ### Email automation tool - Overall rating: 3/5 - Reviewer: Shilpa S. - Verified reviewer: Yes - Industry: Internet - Company size: 10000+ employees - Product usage: Used daily for less than 6 months - Reviewed: September 2019 - Review source details: This reviewer was invited by us to submit an honest review and offered a nominal incentive as a thank you. I don’t find this product very easy to use but it’s one of the best so far I’ve used in the email automation space. #### Ratings breakdown - Ease of use: 2/5 - Value for money: 1/5 - Customer support: 1/5 - Functionality: 1/5 #### Pros I liked that I could run my drip campaigns on this tool. The complexity of the drips could be managed. #### Cons It requires a dedicated developer which might not always be possible. There should be a few automated codes. --- ### I've been a Customer.io user for ~3 years and would highly recommend it to growing startups - Overall rating: 5/5 - Reviewer: Beth S. - Verified reviewer: Yes - Industry: Consumer Electronics - Company size: 51-200 employees - Product usage: Used daily for more than 2 years - Reviewed: June 2023 - Review source details: This reviewer was invited by us to submit an honest review and offered a nominal incentive as a thank you. #### Ratings breakdown - Ease of use: 5/5 - Value for money: 5/5 - Customer support: 5/5 - Functionality: 5/5 #### Pros Customer.io has evolved so much since I started using it! In the beginning, we had to use a lot of workarounds like sending leads via Zapier but they've made huge quality-of-life improvements. We can either use our data connectors to facilitate lead management but they also have a form connector that makes this process a breeze.I love how easily Customer.io connects to our existing data structure and makes it super easy to break down data silos across our suite of tools. The integrations are really easy to use!The campaign builder is super flexible and allows us to not only send marketing comms to our users but also to clean up data and use it to automate basic tasks within the platform. Emails are very easy to setup, especially with the ability to save rows and use snippets. This saves us time when creating new content. We also frequently use the display conditions for email as we have different offerings for users in Canada VS the US. This helps us really customize the content to fit the users' needs. #### Cons While Customer.io does offer SMS/mobile messaging, it would be great if they integrated with more companies so we had more options here. #### Reasons for switching to Customer.io While we're mainly an e-commerce company, we also have a mobile app that is really important in the user journey. Klaviyo worked well for ecomm-specific engagements and tracking but wasn't built to support to in-depth customer tracking we needed from our app. We switched to Customer.io because it was a cost-effective option that allowed us to track both transactional events as well as user behaviours within our app and marketing site. --- ### The marketing campaign tool for any startup, scaleup or e-commerce that want a reliable tool to work - Overall rating: 5/5 - Reviewer: Jeremy L. - Verified reviewer: Yes - Industry: Information Technology and Services - Company size: 51-200 employees - Product usage: Used weekly for less than 12 months - Reviewed: January 2023 - Review source details: This reviewer was invited by us to submit an honest review and offered a nominal incentive as a thank you. #### Ratings breakdown - Ease of use: 5/5 - Customer support: 5/5 - Functionality: 4/5 #### Pros The UI/UX is really great and intuitive. It comes with a lot of features and different channels. It can be used by many different types of people, from not knowing how to code at all, to more advanced users. Enabling complex possibilities. #### Cons Setting up our dedicated preference center required quite some time and resources. Plus it did break native campaign tracking as well as the native unsubscribe button. But they are coming with a new feature on this side really soon.The second pain is focused on data analysis. There is quite some interesting data point, but it can quickly get tough when you try to extract specific behavior or data point. They know about it and are working also on this big part of the product. #### Reasons for choosing Customer.io The core product strength, the great UX, a comprehensive and competitive pricing --- ### Our go-to automation software - Overall rating: 5/5 - Reviewer: Pedro F. - Verified reviewer: Yes - Industry: Marketing and Advertising - Company size: 51-200 employees - Product usage: Used daily for more than 2 years - Reviewed: October 2023 - Review source details: This reviewer was invited by us to submit an honest review and offered a nominal incentive as a thank you. Overall my team is very happy with the software and we would recommend it. #### Ratings breakdown - Ease of use: 5/5 - Value for money: 5/5 - Customer support: 5/5 - Functionality: 5/5 #### Pros It's very easy to use and does 90% of what you'd need to automate your marketing. #### Cons Some of the UI choices over time have become worst, like elements covering crucial elements (eg. minimap when editing an email), and their push to become more of a CDP than a marketing software has made the platform more cluttered for those who, like me, want to use it for marketing automation. Lastly, but possibly most importantly, the fact that we still can't DUPLICATE a campaign is absurd. Having to re-create campaign settings each time is such a time waste, for a seemingly obvious (And simple) feature. #### Reasons for choosing Customer.io Price and ease-of-use. #### Reasons for switching to Customer.io Customer.io is much more capable of managing multi-channel campaigns, with complex segmentation. --- ### One of the best email marketing tools I've used! - Overall rating: 4/5 - Reviewer: Chelsea G. - Verified reviewer: Yes - Industry: Computer Software - Company size: 11-50 employees - Product usage: Used weekly for less than 2 years - Reviewed: January 2023 - Review source details: This reviewer was invited by us to submit an honest review and offered a nominal incentive as a thank you. I've been using Customer.io for almost two years and couldn't be happier with our experience! It was super easy to transition from our previous email client and integrate and connect with our other software. It's been an important piece of our marketing strategy and has helped us generate upsells and new leads. #### Ratings breakdown - Ease of use: 4/5 - Value for money: 5/5 - Customer support: 4/5 - Functionality: 4/5 #### Pros I've worked in many email marketing tools over the years and Customer.io is by far the easiest to use for every member on our marketing team! The drag and drop tool has really helped us achieve the same brand look across every email we send - and it's easy enough that even our copywriters can create emails. No designers or developers needed! #### Cons The only limitation is that I wish the dashboard and interface was a bit more user friendly. I feel like the image library is buried. I feel like there's so many impressive C.io features get hidden. I also wish you set your "Email Settings" in your Team Profile and those settings could be applied to every email instead of manually inputting them each time. #### Reasons for choosing Customer.io We had various demo calls with the alternative products listed above and C.io stood out to our entire team. The ease of use was unmatched. It was exactly the platform we had been looking for. #### Reasons for switching to Customer.io We were not happy with the usability of Intercom for our Marketing Emails. The functionality of C.io was seamless and so easy to use for our entire team. As a designer, I was able to create a library of row designs tailored to our brand library so now anyone on the team can throw together a branded, well-designed email. C.io has made my job SO much easier! --- ### Highly recommend! - Overall rating: 5/5 - Reviewer: Wendy Z. - Verified reviewer: Yes - Industry: Internet - Company size: 11-50 employees - Product usage: Used daily for less than 12 months - Reviewed: June 2023 - Review source details: This reviewer was invited by us to submit an honest review and offered a nominal incentive as a thank you. The customer success and support team at CustomerIO have been a massive factor in my experience. I cannot express my appreciation enough. They are prompt, amiable, and always willing to go the extra mile whenever I reach out to them. I really value the CSM assigned to our account. He has not only taught me how to use Customer.io, but he's also doubled as a strategic partner in helping me bring my ideas to life through Customer.io. #### Ratings breakdown - Ease of use: 5/5 - Value for money: 5/5 - Customer support: 5/5 - Functionality: 5/5 #### Pros I find the product to be user-friendly and enjoyable. The campaign builder is my favorite feature as it allows me to create intricate journey flows with ease. The 'wait until' action block has been a game-changer for me as it has minimized the need for engineering resources. #### Cons I've been using Customer.io for 6 months now and honestly, I don't have any complaints. Seems like for every issue I've had, the support team is dedicated to unblocking me. There are always ways to improve a product, but in terms of important game-changing features, they really thought of everything. #### Reasons for choosing Customer.io Cost and level of support #### Reasons for switching to Customer.io Customer.io saved us money and engineering resources. It was easier to use at our current size. --- ### Awesome marketing platform! - Overall rating: 5/5 - Reviewer: Verified Reviewer - Verified reviewer: Yes - Industry: Computer Software - Company size: 11-50 employees - Product usage: Used daily for less than 12 months - Reviewed: June 2022 - Review source details: This reviewer was invited by us to submit an honest review and offered a nominal incentive as a thank you. It's great and does everything we need it to! #### Ratings breakdown - Ease of use: 5/5 - Value for money: 5/5 - Customer support: 5/5 - Functionality: 5/5 #### Pros The automations are the best part of the software. We can easily create any type of campaign and manipulate it for our needs. #### Cons It would be cool if we could just duplicate a workspace entirely with all the segments and campaigns instead of recreating everything. Another thing that would be cool is being able to do a dynamic wait. Or have a queue type of system built-in for webhooks. #### Reasons for choosing Customer.io It auto-populated the customer attributes when we linked up Segment. It also had better logic control. --- ### A Great Marketing Automation Platform with an amazing support team - Overall rating: 5/5 - Reviewer: Verified Reviewer - Verified reviewer: Yes - Industry: Information Technology and Services - Company size: 51-200 employees - Product usage: Used weekly for less than 2 years - Reviewed: December 2022 - Review source details: This reviewer was invited by us to submit an honest review and offered a nominal incentive as a thank you. We are mainly using C.io for lead nurturing purposes. We are quite confident with the fact they will improve their product with better reporting features. #### Ratings breakdown - Ease of use: 5/5 - Value for money: 5/5 - Customer support: 5/5 - Functionality: 5/5 #### Pros I've tried many marketing automation tools and Customer.io is clearly making a difference in terms of UX, documentation, and customer support! #### Cons It can be quite complex sometimes according to your needs but thanks to their great UX, documentation, and support team, you'll find solutions. There are some missing features (eg. cohort analysis) but hopefully, they are working on it. #### Reasons for switching to Customer.io We needed a tool with true Marketing Automation Platform features. --- ### One of the best for marketing & communication - Overall rating: 5/5 - Reviewer: François M. - Verified reviewer: Yes - Industry: Business Supplies and Equipment - Company size: 2-10 employees - Product usage: Used weekly for less than 12 months - Reviewed: December 2024 - Review source details: This reviewer was invited by us to submit an honest review and offered a nominal incentive as a thank you. I use it to manage email marketing for a multilingual e-commerce site. We have different dedicated areas on customer.io to manage the different languages. We use it mainly to send newsletters, and for the automation system, sending targeted emails to our prospects. #### Ratings breakdown - Ease of use: 3/5 - Value for money: 5/5 - Customer support: 5/5 - Functionality: 5/5 #### Pros Its complete environment, allowing you to perform all your marketing, newsletter and scripting tasks with ease Everything is fluid and clear, making it easy to use #### Cons Perhaps the campaign model is a little more complicated to learn, but on the whole it's a complete and reliable system --- ### A solid product for companies that need something more! - Overall rating: 5/5 - Reviewer: Artur W. - Verified reviewer: Yes - Industry: Entertainment - Company size: 11-50 employees - Product usage: Used daily for less than 2 years - Reviewed: June 2023 - Review source details: This reviewer was invited by us to submit an honest review and offered a nominal incentive as a thank you. #### Ratings breakdown - Ease of use: 5/5 - Value for money: 5/5 - Customer support: 4/5 - Functionality: 5/5 #### Pros - lots of needful integrations, e.g. BigQuery, Google Sheets- a simple to use, yet highly sophisticated tool for Email Marketing and Marketing Automation- Push notifications support- in-app messages support- webhooks - possibility of advanced segmentation of users by their attributes and behavior #### Cons - slightly limited drang&drop email editor --- ### A game changer - Overall rating: 5/5 - Reviewer: Ali Ilhami Ö. - Verified reviewer: Yes - Industry: Computer Software - Company size: 2-10 employees - Product usage: Used daily for less than 12 months - Reviewed: June 2023 - Review source details: This reviewer was invited by us to submit an honest review and offered a nominal incentive as a thank you. #### Ratings breakdown - Ease of use: 5/5 - Value for money: 5/5 - Customer support: 5/5 - Functionality: 5/5 #### Pros We love to be able to act based on everything that our customers do on our platform and our website. Campaign workflows are easy to build and maintain and UI is very intuitive. #### Cons We basically manage all our customer data in C.io and not being able to having KPIs and analytics related with customer actions and events is a little bit frustrating. --- ### This is my main email platform now - Overall rating: 5/5 - Reviewer: Verified Reviewer - Verified reviewer: Yes - Industry: Computer Software - Company size: 2-10 employees - Product usage: Used daily for less than 12 months - Reviewed: June 2023 - Review source details: This reviewer was invited by us to submit an honest review and offered a nominal incentive as a thank you. #### Ratings breakdown - Ease of use: 5/5 - Value for money: 4/5 - Customer support: 5/5 - Functionality: 4/5 #### Pros Customer.io is an excellent email marketing platform. I made the switch from a lesser-known (and cheaper) platform that I had been using for a few years. I can clearly see the difference now, and I'm happy to pay more for the ability to engage my customers more effectively and access a wider range of marketing features, all in one place. #### Cons Customer.io is not yet the ideal platform for my projects. One limitation, for instance, is its restricted template language.It also lacks the ability to filter and count incoming events and dynamically insert these values into emails. --- ### Customer.io is the best for startups to small & mid-size companies... maybe even more. - Overall rating: 5/5 - Reviewer: Carl T. - Verified reviewer: Yes - Industry: Information Services - Company size: 2-10 employees - Product usage: Used daily for less than 2 years - Reviewed: May 2023 - Review source details: This reviewer was invited by us to submit an honest review and offered a nominal incentive as a thank you. #### Ratings breakdown - Ease of use: 5/5 - Value for money: 5/5 - Customer support: 5/5 - Functionality: 5/5 #### Pros Easy to setup, easy to use. No constraints (unlimited comms, events, properties). Loaded with great features. Affordable for small companies. Great support. #### Cons Got a hard time setting up a couple features, but support is very responsive and got this done quickly. Otherwise, nothing really. #### Reasons for choosing Customer.io Price, Feature set #### Reasons for switching to Customer.io Limitations of the product. Hard to use. --- ### Flexible but lacking some functionality - Overall rating: 5/5 - Reviewer: Verified Reviewer - Verified reviewer: Yes - Industry: Financial Services - Company size: 201-500 employees - Product usage: Used daily for more than 2 years - Reviewed: May 2018 - Review source details: This reviewer was invited by us to submit an honest review and offered a nominal incentive as a thank you. #### Ratings breakdown - Ease of use: 5/5 - Functionality: 3/5 #### Pros Good user interface that's intuitive. Easy to get up and running without prior knowledge. Creating segments is quick and simple. #### Cons Reporting tools are not very robust. For example, within Customer.io you can't sort or aggregate email campaigns to see roll-up metrics. Rather you'll need to export and sort in a spreadsheet or connect with 3rd party tools like MixPanel or Periscope. --- ### Overall great - Overall rating: 5/5 - Reviewer: Eduardo E. - Verified reviewer: Yes - Industry: Financial Services - Company size: 11-50 employees - Product usage: Used weekly for more than 2 years - Reviewed: June 2023 - Review source details: This reviewer was invited by us to submit an honest review and offered a nominal incentive as a thank you. #### Ratings breakdown - Ease of use: 4/5 - Functionality: 5/5 #### Pros The ease of use and the flexibility it provides #### Cons Sometimes the integration process can be a bit cumbersome. --- ### Good for segmentation and all forms of email, SMS, and push notification campaigns - Overall rating: 4/5 - Reviewer: Sarah P. - Verified reviewer: Yes - Industry: Financial Services - Company size: 11-50 employees - Product usage: Used daily for less than 12 months - Reviewed: July 2022 - Review source details: This reviewer was invited by us to submit an honest review and offered a nominal incentive as a thank you. #### Ratings breakdown - Ease of use: 3/5 - Functionality: 4/5 #### Pros I like how the drip campaigns are very simple to set up and implement. The segmentation tool helps to identify which customers to put into these campaigns and when they should exit the campaign. #### Cons I like how easy it is to build emails, though there could be better design/templates for this. Additionally, setting up segments might be confusing for someone without a data background, which I have. --- ### YOUR PARTNER TO COMMUNICATE WITH YOUR DIRECT CUSTOMERS. - Overall rating: 4/5 - Reviewer: Francisco B. - Verified reviewer: Yes - Industry: Information Technology and Services - Company size: 201-500 employees - Product usage: Used weekly for less than 2 years - Reviewed: August 2019 - Review source details: This reviewer was invited by us to submit an honest review and offered a nominal incentive as a thank you. I have had an excellent customer experience, thanks to it I keep up to date the list of clients I work with, communicate with them through personalized messages and thus be able to meet our customers. #### Ratings breakdown - Ease of use: 3/5 - Value for money: 5/5 - Customer support: 3/5 - Functionality: 3/5 #### Pros I have been using this tool for several years to communicate with my clients, I am encouraged to use it because thanks to it I can send the newsletters and emails automatically to each client group depending on the profile, it is special to maintain a continuous communication with users , make them feel that we care and that communication is essential. #### Cons It is a very good communication tool, however customer service is poor, attention is very slow and the response to the requirements as well. --- ### Customer.IO makes life so much easier with email tracking, Saved my butt multiple times! - Overall rating: 5/5 - Reviewer: James R. - Product usage: Used daily for less than 2 years - Reviewed: June 2018 - Review source details: This reviewer was invited by us to submit an honest review and offered a nominal incentive as a thank you. #### Ratings breakdown - Ease of use: 5/5 - Value for money: 5/5 - Customer support: 5/5 - Functionality: 5/5 #### Pros Customer.IO has allowed me and my company to feel confident that the correct information is being sent to the people who need it the most, our customers. The ability to view all emails that have been sent and to ensure they were received by the customer is a huge benefit to us. being able to see if a email was suppressed or bounce give the ability to ensure you can deal with the issue in a timely manner and get the info into the right peoples hands. it has also assisted us in dealing with difficult customers that claim they never received a email, however the application allowed us to show the customer that no only did they receive it they opened it! #### Cons the only negative i could see is that the application only allows you to send 50 emails at a time and for a large customer base this makes it more time consuming. --- ### Easy-to-use tool for personalized communication - Overall rating: 4/5 - Reviewer: Olivia T. - Verified reviewer: Yes - Industry: Marketing and Advertising - Company size: 501-1000 employees - Product usage: Used daily for less than 12 months - Reviewed: March 2023 - Review source details: This review was submitted organically. No incentive was offered #### Ratings breakdown - Ease of use: 5/5 - Functionality: 4/5 #### Pros Using customer.io helped us create personalized messages to our clients based on what their job positions. The website is easy to use and the support team is really helpful. #### Cons Sometimes it's hard to understand their pricing schemes and some of the features are only available if you pay more. Also, the reporting could be more detailed --- ### Monthly contracts can't be downgraded - Overall rating: 4/5 - Reviewer: Verified Reviewer - Verified reviewer: Yes - Industry: Information Technology and Services - Company size: 11-50 employees - Product usage: Used weekly for less than 12 months - Reviewed: March 2023 - Review source details: This review was submitted organically. No incentive was offered Unfortunately, can't recommend #### Ratings breakdown - Ease of use: 4/5 - Value for money: 1/5 - Customer support: 1/5 - Functionality: 4/5 #### Pros Customer.io is a pretty good, capable tool. Easy to get data in and easy to create communications and journeys for your customers. #### Cons I pay monthly and they will not allow me to right-size my usage to a lower amount until a year has elapsed. Really odd. --- ### Great starter Marketing software - Overall rating: 5/5 - Reviewer: Verified Reviewer - Verified reviewer: Yes - Industry: Insurance - Company size: 501-1000 employees - Product usage: Used daily for less than 6 months - Reviewed: January 2022 - Review source details: This reviewer was invited by us to submit an honest review and offered a nominal incentive as a thank you. #### Ratings breakdown - Ease of use: 5/5 - Value for money: 3/5 - Functionality: 3/5 #### Pros In using customer.io it is easy to use and setup for your business. It has a wide range of features and easy to use templates. #### Cons The lack of native integrations to CRMs is a big negative but they do work with integration tools like Zapier. --- ### We were looking to migrate off of a superglued-tools situation and Customer.io was the solution - Overall rating: 5/5 - Reviewer: Verified Reviewer - Verified reviewer: Yes - Industry: Marketing and Advertising - Company size: 2-10 employees - Product usage: Used weekly for less than 6 months - Reviewed: February 2021 - Review source details: This reviewer was invited by us to submit an honest review and offered a nominal incentive as a thank you. We were looking for a solution that could improve our customer success goals and reduce churn. Customer.io delivers as the go-to platform in this category. #### Ratings breakdown - Ease of use: 4/5 - Value for money: 4/5 - Customer support: 4/5 - Functionality: 5/5 #### Pros We were using an email service provider and a Figma design file to manage and sync our customer messaging flows. We needed a proper solution, so we compared a lot of companies, and Customer.io seemed to be the most reputable. #### Cons The hurdle to learn and use the platform was a bit high, and there were areas of UX that could have used some improvement. But at the end, the platform is so quick and now as we are used to it, it does exactly what we need it to do. --- ### Customer.io: Email Automation tool for scale - Overall rating: 4/5 - Reviewer: Verified Reviewer - Verified reviewer: Yes - Industry: Mechanical or Industrial Engineering - Company size: 10000+ employees - Product usage: Used weekly for less than 12 months - Reviewed: March 2019 - Review source details: This reviewer was invited by us to submit an honest review and offered a nominal incentive as a thank you. We use customer.io for automatic and personalized triggers and this tool is amazing. #### Ratings breakdown - Ease of use: 4/5 - Value for money: 4/5 - Customer support: 4/5 - Functionality: 4/5 #### Pros Workflow is easy to configure and very powerful for automation. You can configure the tool in such a way emails are automatically triggered whenever it notices a particular behavior. A/B Testing feature is really cool. #### Cons Integrating with other APIs is complex. ## More reviews [Next reviews](https://www.softwareadvice.com/crm/customer-io-profile/reviews/?page=2) --- Customer.io Reviews, Pros and Cons - 2026 Software Advice