This is a disambiguation page. Read on to learn more about the message channels we support, or move on to the channel you really want!
This section is about messages
If you want to know about campaigns, broadcasts, or transactional messages—the mechanisms in Customer.io that actually trigger workflows and messages—you should go here.
Our most common and customizable platform. We support several email service providers (ESP), or you can use your own, custom SMTP server. You can send email through any workflow or trigger type in Customer.io.
Unlike SMS, push, in-app, and so on, emails let you send complex information, including full HTML messages. Learn more about composing emails.
Push notifications help you get in touch with your mobile audience, whether or not they’re in your app. Push notifications rely on your audience to opt-into messages on their device. While you can write your own integration to send push notifications, we recommend that you use our SDKs—which provide a much easier path to identifying your audience and sending push notifications.
We do not support web-based push notifications at the moment. To send a message to your web audience, you should send in-app messages. Learn more about push notifications.
Where push notifications help you talk to your audience outside of your app, In-app messages help you reach your audience when they use your app or website. In-app messages are less restrictive in that your audience doesn’t necessarily need to opt-into messages to receive them. You simply have to identify them.
In-app messages are great for immediate, in-app interactions. You can send messages to people based on the page(s) that they visit in your app, the events that they perform, and so on.
We send SMS and MMS messages through Twilio. SMS messages provide a handy way to send people short, immediate info outside of your app or website. With SMS, you can also setup data campaigns or workflows within Twilio to handle incoming messages. Learn more about SMS.
Slack messages are a great way to alert people when a user performs an event, submits a help ticket, etc. If you have a public Slack channel, you might send a message when you release a new feature or version. Learn more about Slack messages.
Webhooks provide a handy way to set up quick, low-code integrations with external services. Webhooks let you pass data to, and return data from, just about any public API on the internet. You can use it to send a message, update a person’s attributes in Customer.io, update your CRM, or take just about any action on a customer that you’d want to do. Learn more about webhooks.