Customer.io has many customizable elements to make very complex or very simple email flows. I appreciate how easy it is to use even for someone who isn't as familiar with marketing strategies.

Integration with a software product like ours is quite straightforward, and Customer.io offers a nice API for updating customer profiles and posting events for those customers.

Easy-to-use and intuitive email and marketing automation platform. Especially the ability to send out webhooks makes it very strong.

With enough money, Customer. IO is a good subscription to have.

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.

Found it very useful to send out multiple emails in a flow. Allows you to create a workflow through which you can plan the email sent to customers.

The UX/UI of the platform is perfect, definitely the best one we have among the e-mail senders we use.

Great to build and send automated campaigns. Can improve its usability in sending bulk emails.

A very useful tool for non-developer, tech-savvy marketers.

We needed a proper solution, so we compared a lot of companies, and Customer.io seemed to be the most reputable.

Minimal pre-packaged layouts; layout design requires knowledge of CSS. Lack of workflow cloning or replication creates unnecessary work.

There's a fine line between an eye-candy platform that scores low on customization and a fully fledged tool that requires constant support from a developer.

The two things that I use, their Newsletter builder and their Campaigns builder, they are splendid. The builder is clean and easy to use.

On top of it all, I love the price. Great value for the money.

An excellent tool for Automated Marketing campaigns and the product and support teams are extremely helpful.

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.

Customer.io walks that line gracefully, allowing me to control onboarding and loyalty processes and much more.

There are not many customization options. It is also limited to users that has large customer bases.

Perhaps its limited design options in some cases, but its automation is still high end.

IO's API to send out notification emails to our customers, I have a few things to say about its API. It is easy to use and predictable.

On top of it, customer support rocks. I was answered right away for every little question that came up, so I didn't feel alone while working to set everything to my requirements.

I liked that I could run my drip campaigns on this tool. The complexity of the drips could be managed.

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.

The perfect platform to set up product-driven email communications with customers at scale.

The lack of a WYSIWYG editor for my marketing counterparts (tho I hear rumors this is coming) and event-based filters in my workflows.

A Great Marketing Automation Platform with an amazing support team.

The API is easy to use too, and makes it really easy to integrate with your app at a deep level. I couldn't imagine life without it.

The creating emails part does get tedious at times. The drag and drop builder isn't the easiest to use.

If somebody requires an application with a large memory board and at the same time, transfers or share the data, then Expertsender is an appropriate software for those masses.

Overall great platform that has met all of our needs. Customer support is very friendly and will provide detailed explanations regarding helping you to use and optimize the service.

I like the ease of use, it is intuitive and very powerful. It is easily the best e-mail marketing software I have used so far.

For more tech guys there are unlimited number of opportunities to work with data and marketing automation. Amazing performance for ecommerce businesses.

Awesome customer service. Often we get emails that detail and explain everything we need to work on - so not only are they a service, but they've been such a great educational tool for us as well.

Guests are comfortable to allocate the product’s detail and reviews. Nothing is far from this awesome application.

Awesome Web-Based software to store and share the data.

Sometimes it is necessary to send to .xls and compare with others products. It is not possible to use optout lists, blacklists and exclusion lists in the segment.

Few inconvenient thing about manual email creation.

At some point When we have to make test of message we are facing problems due to channel blockage.

It possesses the power to store messages and emails and deliver with great responsibility. This diligence is one of the best communication platform for business companies and clients.

Nothing is as good as this software in managing the product’s marketing and detailing. Our customers are happy and so we are, by having this application to reply to them quickly.

Can sometimes be a bit hard to use for new beginners.

The ease of use and ability to improve all around deliverability, where other ESP platform's results are marginal compared to our experience with ExpertSender.

US Dollar

Customer.io is a leading customer engagement platform designed for tech-savvy organizations to create personalized customer journeys that engage, convert, and scale. Use first-party data to send meaningful messages across all channels, including email, in-app, push, SMS, and webhooks. Today, 7500+ brands trust their messaging needs with Customer.io. Customer.io’s suite of products includes Journeys, a messaging automation tool, Data Pipelines, a customer data platform; and Parcel, a code editor designed for email. Founded in 2012, Customer.io is a globally distributed, remote-first company named one of the fastest-growing private companies on the 2023 Inc. 5000 list.

LongDescription

Real-Time Analytics

Engagement Tracking

A/B Testing

Customer Surveys

Multi-Channel Marketing

Lead Capture

Customizable Reports

Access Controls/Permissions

Activity Tracking

Customer Segmentation

Subscription Management

Drip Campaigns

Multi-Campaign

Customer Database

Customizable Fields

Campaign Scheduling

Template Management

Data Import/Export

Campaign Segmentation

Email Tracking

Email Campaign Management

Email Templates

Subscriber Management

Email Distribution

Contact Management

Customer Experience Management

Content Management

Lead Management

Email Marketing

Mobile Access

List Management

Real-Time Data

Click Tracking

Multi-Channel Communication

Marketing Automation

Social Media Integration

Customizable CTAs

Workflow Management

Email Management

Dynamic Content

Event Triggered Actions

Visual Analytics

Customization

Activity Dashboard

Alerts/Notifications

SMS Marketing

CAN-SPAM Compliance

Reporting & Statistics

Segmentation

Customizable Templates

WYSIWYG Editor

Image Library

Conversion Tracking

Multi-Language

Mobile-Optimized Email

Real Time Reporting

Customizable Branding

Behavior Tracking

Reporting/Analytics

Contact Database

Mailing List Management

Campaign Analytics

Lead Qualification

Drag & Drop

Autoresponders

Customer History

Tagging

Content Creation

Third-Party Integrations

Campaign Management

Multivariate Testing

SMS Messaging

Push Notifications

Device Targeting

Data Synchronization

Data Connectors

Data Integration

Multiple Data Sources

Match & Merge

Data Security

Secure Data Storage

Visual Notifications

Real-Time Notifications

Automated Scheduling

Notification Scheduling

Web Notifications

App Notifications

SMS Notifications

Visual Workflow Management

Notification Editor

Personalization

Customer Journey Mapping

Process/Workflow Automation

Data Capture and Transfer

Compliance Management

GDPR Compliance

Preview Functionality

HTML Editor

Customer.io offers the following business plans:

Email/Help Desk

FAQs/Forum

Knowledge Base

Chat

2-10

11-50

51-200

201-500

501-1000

1000+

Customer.io

Live Online

Webinars

Documentation

Videos

What is ExpertSender? 

ExpertSender is a stable, high deliverability platform that helps eCommerce stores to grow their revenue with marketing automation across email, SMS, mobile, web and chat channels. We provide advanced data-driven customer segmentation, dynamic message personalization and dedicated support for all our customers. 

We've been in the business for over 11 years and deliver over 20 billion messages a year for over 1,000 brands worldwide. 


Best For 

Medium-sized and big eCommerce stores, but we also bring value to other industries, including travel & hospitality, finance & banking, automotive and media & publishing. 



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