Not a fan of customer io Not a fan of customer io. It is way to expensive, but more importantly the pricing doesn't make any sense. The interface is less than ideal. They request annual contracts.

Incredible customer support! Incredible customer support! The customer support team at customer.io is incredible. They are prompt, kind, efficient, and literally go out of their way to figure out the answer to your questions. One person even recorded a Loom for me, and did tests on Zapier to help diagnose the problems!

Extremely Disappointed with Customer.io We've had an incredibly frustrating experience with Customer.io, and I feel compelled to share it with others. We've been using their platform for push notifications, but the results have been nothing short of disappointing. First and foremost, the delivery rate of push notifications hovers at an abysmal 10-20%. This is completely unacceptable for a service that promises effective communication with our audience. Even worse, the push notifications are often sent with a significant delay, sometimes taking up to 45 minutes to reach recipients. This lag severely affects our ability to engage with our customers in a timely manner. What's equally frustrating is the lackluster support we've received. Despite our repeated attempts to seek assistance, Customer.io's support team has been unable to resolve these critical issues. We've reached a point where we're essentially left to fend for ourselves with a malfunctioning service. Adding insult to injury, Customer.io's management has shown no willingness to offer any kind of compensation or discount for the troubles we've encountered. It's incredibly disheartening to see a company not taking responsibility for their promises and failing to acknowledge their shortcomings. To make matters worse, our integration costs with Customer.io were prohibitively high. We invested a substantial amount of time and resources into this platform, only to be met with a myriad of problems and unsatisfactory results. If I had the chance to turn back time, I would undoubtedly choose a different service provider. Customer.io has left us deeply dissatisfied, both with their product and their customer support. I hope that by sharing our experience, others can avoid the same pitfalls and frustrations we've endured.

only email support, which is slow to respond. good luck debugging! [EDIT 2022/07]: their email support is helpful so my original review was too harsh. that said, there's a lot of features still missing that are standard in other email tools. ORIGINAL REVIEW: their only form of customer support is email and it takes them 24+ hours to reply. debugging is a very slow. they should at least open live chat but allowing for limited use of zoom or calls would be delightful. if you are only going to have emails, make sure your support team is responding within hours, not a day or so.

Data was exposed to third party As a customer of Celsius Network, they used Customer.io to manage contacts. Unfortunately Customer couldn’t handle this responsibility and an employee store their data and shared it with an unauthorized third party.