13 Ratings
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Score 9.4 out of 100
25 Ratings
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Score 8.6 out of 100

Likelihood to Recommend

Customer.io

If you have a very small database of people, then probably the whole integration isn't justified. If you have a small business and don't plan to scale much, don't do it. It will be expensive for what you can get elsewhere (Mailchimp).If you want a scalable and powerful platform, that will take some time to pay off, and you can wait, then do it. Once you get integrated and start sending events and attributes, the things you can do are almost limitless.
Santiago Valdés | TrustRadius Reviewer

Mailchimp Transactional Email (Mandrill)

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
Darren Douglas Lee | TrustRadius Reviewer

Feature Rating Comparison

Email & Online Marketing

Customer.io
8.6
Mailchimp Transactional Email (Mandrill)
WYSIWYG email editor
Customer.io
6.8
Mailchimp Transactional Email (Mandrill)
Dynamic content
Customer.io
8.3
Mailchimp Transactional Email (Mandrill)
Ability to test dynamic content
Customer.io
8.3
Mailchimp Transactional Email (Mandrill)
A/B testing
Customer.io
7.7
Mailchimp Transactional Email (Mandrill)
Mobile optimization
Customer.io
10.0
Mailchimp Transactional Email (Mandrill)
Email deliverability reporting
Customer.io
8.0
Mailchimp Transactional Email (Mandrill)
List management
Customer.io
10.0
Mailchimp Transactional Email (Mandrill)
Triggered drip sequences
Customer.io
9.6
Mailchimp Transactional Email (Mandrill)

Reporting & Analytics

Customer.io
6.0
Mailchimp Transactional Email (Mandrill)
Dashboards
Customer.io
5.7
Mailchimp Transactional Email (Mandrill)
Standard reports
Customer.io
5.2
Mailchimp Transactional Email (Mandrill)
Custom reports
Customer.io
7.0
Mailchimp Transactional Email (Mandrill)

Pros

Customer.io

  • Workflow building and management.
  • Extremely flexible and integrates easily with other services.
  • Solid email builder.
  • Webhook makes it easy to send and receive data in event-driven contexts.
  • Support for liquid makes highly detailed personalization possible in every message.
Joel McLean | TrustRadius Reviewer

Mailchimp Transactional Email (Mandrill)

  • 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.
Josh Holloway | TrustRadius Reviewer

Cons

Customer.io

  • I may be missing it in the UI, but a place to see the list of emails who qualify for a certain email.
  • One easy to view chart of all our automated/lifecycle emails to see what a given user would see over their customer journey. (This is really just a feature request/idea - the product itself is really awesome.)
Ted Bennett | TrustRadius Reviewer

Mailchimp Transactional Email (Mandrill)

  • 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.
Jim Rubenstein | TrustRadius Reviewer

Usability

Customer.io

No score
No answers yet
No answers on this topic

Mailchimp Transactional Email (Mandrill)

Mailchimp Transactional Email (Mandrill) 8.0
Based on 1 answer
Mailchimp does a good job of documenting the service
Micah Jones | TrustRadius Reviewer

Support Rating

Customer.io

No score
No answers yet
No answers on this topic

Mailchimp Transactional Email (Mandrill)

Mailchimp Transactional Email (Mandrill) 7.0
Based on 4 answers
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.
Jared DeLong | TrustRadius Reviewer

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.
Sean Anderson | TrustRadius Reviewer

Mailchimp Transactional Email (Mandrill)

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
Anonymous | TrustRadius Reviewer

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.
Mike Koolwijk | TrustRadius Reviewer

Mailchimp Transactional Email (Mandrill)

  • 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%.
Anonymous | TrustRadius Reviewer

Pricing Details

Customer.io

General

Free Trial
Yes
Free/Freemium Version
Premium Consulting/Integration Services
Yes
Entry-level set up fee?
Optional

Mailchimp Transactional Email (Mandrill)

General

Free Trial
Free/Freemium Version
Premium Consulting/Integration Services
Entry-level set up fee?
No

Rating Summary

Likelihood to Recommend

Customer.io
9.2
Mailchimp Transactional Email (Mandrill)
8.1

Usability

Customer.io
Mailchimp Transactional Email (Mandrill)
8.0

Support Rating

Customer.io
Mailchimp Transactional Email (Mandrill)
7.0

Add comparison