Customer.io vs. Mailchimp Transactional Email (Mandrill)

Overview
ProductRatingMost Used ByProduct SummaryStarting Price
Customer.io
Score 8.7 out of 10
Small Businesses (1-50 employees)
Customer.io is the customer engagement platform that enables marketers to build their most sophisticated automated messaging campaigns. With access to your real-time behavioral data, create personalized and relevant messages that engage and retain your customers. Send emails, push notifications, SMS, in-app messages, and more all through an intuitive and powerful visual building experience. Built for scale, Customer.io is used by over 4,600 companies, sending over 8 billion messages per year.
$100
per month
Mailchimp Transactional Email (Mandrill)
Score 8.2 out of 10
N/A
Mailchimp Transactional Email (formerly Mandrill) is designed to allow users to deliver fast, personalized transactional emails using API or SMTP.
$0
per month
Pricing
Customer.ioMailchimp Transactional Email (Mandrill)
Editions & Modules
No answers on this topic
Free
$0
per month
Essentials
$9.99
per month
Standard
$14.99
per month
Premium
$299
per month
Offerings
Pricing Offerings
Customer.ioMailchimp Transactional Email (Mandrill)
Free Trial
YesYes
Free/Freemium Version
NoYes
Premium Consulting/Integration Services
YesNo
Entry-level Setup FeeOptionalNo setup fee
Additional DetailsEssentials: For startups and small teams engaging customers on their mobile and web apps. - Up to 5,000 profiles*, Send Emails, Push, In-App, and SMS, Visual Workflow Builder, Segmentation, Two Workspaces, Email Support, Customer Community Premium: For high-growth companies looking for greater control over their messaging outcomes. - Everything in Essentials, Custom Data + Message Volume, Premium Product Features, Additional Workspaces, 90-day Onboarding Program, Premium Email & Chat Support, Managed Deliverability, Dedicated IPs, Parcel Pro Licenses, HIPAA Compliance Enterprise: For at-scale companies looking to create world-class customer experiences. - Everything in Premium, Managed Infrastructure*, Customer Success Manager, Quarterly Success Reviews, Technical Account Manager*, Audit Logging & Data Governance*, Parcel Business Licenses, Migration Support*, *Available by consultation.
More Pricing Information
Community Pulse
Customer.ioMailchimp Transactional Email (Mandrill)
Top Pros
Top Cons
Best Alternatives
Customer.ioMailchimp Transactional Email (Mandrill)
Small Businesses
Simplify360
Simplify360
Score 7.7 out of 10
Amazon SES
Amazon SES
Score 8.6 out of 10
Medium-sized Companies
SAP Service Cloud
SAP Service Cloud
Score 9.4 out of 10
Amazon SES
Amazon SES
Score 8.6 out of 10
Enterprises
SAP Service Cloud
SAP Service Cloud
Score 9.4 out of 10

No answers on this topic

All AlternativesView all alternativesView all alternatives
User Ratings
Customer.ioMailchimp Transactional Email (Mandrill)
Likelihood to Recommend
9.9
(8 ratings)
8.5
(15 ratings)
Usability
-
(0 ratings)
8.0
(1 ratings)
Support Rating
-
(0 ratings)
6.7
(4 ratings)
User Testimonials
Customer.ioMailchimp Transactional Email (Mandrill)
Likelihood to Recommend
Customer.io
This tool is well-suited for companies looking to run email marketing campaigns or send out newsletters regularly to their users/customers. The workflow setup is especially useful for companies who want to send specific emails based on user behavior - i.e. they've not logged in recently, have bought a specific product, haven't opened any emails, etc. This could also be useful for freelancers like me since you can create different workspaces within Customer.io. I have configured it this way to handle email marketing for a few of my clients, and the software keeps everything organized and separate. This might not be the best tool for small businesses, considering the price. It may be better to start out with a cheaper email marketing tool, and then if/when necessary, scale-up with a tool like Customer.io.
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Mailchimp
Any system that requires transactional email message functionality as an external service. The benefits of a well managed and vetted server to maintain reputation as well as being reliability is well worth the effort needed to integrate towards the API specs
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Pros
Customer.io
  • Managing users, attributes and events. You are easily able to modify any user, based on their ID, and add or remove attributes, assign events to them. That makes it very easy to segment later and to assign them to several campaigns based on behavior. Just a warning: this integration isn't so easy (at least it wasn't for us).
  • Creating workflows of campaigns is very easy. You can quickly create behavioral campaigns based on attributes, segments and add elements to the workflow. You can send an email, then wait, then send another, then exit the campaign if they converted, etc. The workflow is easy to configure and very powerful for automation.
  • We don't use many email templates (we make them in MJML) but it's very easy to add senders, to change templates and in general to test designs.
  • Deliverability works very well, at least for us. It sends emails pretty fast and without issues.
  • Exporting is very quick and easy. Importing wasn't a feature until recently, but it works well too.
  • Seeing activity it's also useful. In general, logs are awesome (be it of a customer, of activity on the site, email sends, etc.).
  • We don't use environments, but it might be very useful for a bigger company.
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Mailchimp
  • Mandrill is extremely reliable. We switched from using a platform that was very hit-or-miss, but we never had a single deliverability issue with Mandrill's transactional API. Every email was sent reliably and quickly.
  • Mandrill's reporting and debugging features made it easy to ensure that all our messages were getting delivered to the right place in a timely manner. In fact, Mandrill's tools were so robust that we used it as an end-around way of debugging another failing service we were using.
  • Mandrill is a very affordable add-on to an existing MailChimp account. Adding an extra layer of reliability was a no-brainer, and made the cost essentially negligible to our organization.
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Cons
Customer.io
  • Push notifications are very rudimentary. Everything has to be done by hand unless you're sending an extremely simple message.
  • A bit too email centric.
  • Lacks an ability to schedule messages on a daily, weekly, etc. basis.
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Mailchimp
  • The rate-limit system can be troubling. If you are switching providers and already have a large e-mail volume, you're going to want to transition slowly. The per-hour send limits are initially very low, and if you have any deliverability or complaint hiccups, they will plummet quickly. The Mandrill support staff is very helpful in this area - they will not (and claim that they can not) manipulate send limits for any account at any time for any reason.
  • Billing is combined in with a paid MailChimp subscription, which didn't used to be the case.
  • No free tier.
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Usability
Customer.io
No answers on this topic
Mailchimp
Mailchimp does a good job of documenting the service
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Support Rating
Customer.io
No answers on this topic
Mailchimp
I haven't personally reached out to their support team, but the feedback I've heard from our tech support and engineering teams have been that their response to questions has often been they either are unsure or that Mandrill is what it is. For example, when our customers weren't able to see opens and clicks for all emails sent, and we reached out to their support, the response was it is what it is, and they'll send a notification to our app if they can.
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Alternatives Considered
Customer.io
Customer.io was really the first pure, full-featured drip email program on the market and as far as I know, it's still the simplest and best overall for that specific function. SendGrid has also added drip campaign features, but I would seriously evaluate Customer.io against any other drip email provider because they really have all the key elements you need to make it work.
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Mailchimp
So we actually work with clients across all of the platforms listed above, but Mandrill has a huge ease of use bonus in its favor, especially when working with clients who are setting up a Cart Recovery style marketing campaign for the first time or are looking for a bit of a fire-and-forget setup. With more sophisticated clients (on the scale of global ecommerce companies), who have a larger subscriber/customer base and in-house design teams, we find that Mandrill usually isn't enough
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Return on Investment
Customer.io
  • Fast testing for new products to specific groups. It saves a lot of time and money.
  • Removed workload from marketing = more time to make it better.
  • Better contact with specific groups, seeing a increase in sales because of this.
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Mailchimp
  • It helped us to grow our customer database substantially in the last quarter.
  • Last week we reached 62% customer engagement in our campaign. This is very good customer engagement for our projects.
  • In the last quarter we achieved our target by 135%.
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ScreenShots

Customer.io Screenshots

Screenshot of See account performance at a glance from the Dashboard view.Screenshot of Drag and drop messages, time delays, and branches where desired, to build cross-channel campaigns.Screenshot of Localization for global audiences. Build one message. Deliver it in multiple languages.Screenshot of Trigger campaigns based on forms submissions, customer attributes, customer actions, and dates.Screenshot of Create data-driven or manual segments in the no-code builder for recipient lists, campaign triggers, filters, and conversion goals.Screenshot of Build emails with a code editor that helps navigate code and iterate.