Integrate Mailtrap with Customer.io to automate workflows, sync data between apps, and eliminate repetitive tasks with AI-powered automation.
Create manual segment in Customer when New Email Delivered to Mailtrap
Delete a segment in Customer when New Email Delivered to Mailtrap
Delete a segment in Customer when New Email Opened in Mailtrap
Get Contact Lists from Mailtrap when Customer Events from Customer.io
Create Contact in Mailtrap when Customer Events from Customer.io
Start from a real workflow other teams are already running.
Mailtrap
When this happens...
New Email Delivered
New Email Opened
New Email Recieved
When a contact unsubscribes
Customer.io
Automatically do this!
List campaigns
Create manual segment
Delete a segment
Create manual segment in Customer when New Email Delivered to Mailtrap
Use this flowDelete a segment in Customer when New Email Delivered to Mailtrap
Use this flowDelete a segment in Customer when New Email Opened in Mailtrap
Use this flowGet Contact Lists from Mailtrap when Customer Events from Customer.io
Use this flowCreate Contact in Mailtrap when Customer Events from Customer.io
Use this flowCreate Contact List in Mailtrap when Customer Events from Customer.io
Use this flowDelete Contact List from Mailtrap when Customer Events from Customer.io
Use this flowDelete a Contact from Mailtrap when Customer Events from Customer.io
Use this flowUpdate Contact in Mailtrap when Customer Events from Customer.io
Use this flowDelete a Contact Field in Mailtrap when Customer Events from Customer.io
Use this flowEverything you can automate between Mailtrap and Customer.io.
When this happensTriggers
A trigger is an event that starts a workflow.
Runs when new email is delivered to the recipient's mail server for a chosen sending stream or domain.
Runs when a new email open event occurs in the selected sending stream.
Runs when a new email arrives in a selected inbox.
Runs the workflow automatically whenever a contact unsubscribes from emails in the selected sending stream.
Triggers when Events are performed on customer
Triggers when Events are performed on Email.
Action is the task that follows automatically within your Mailtrap integrations.
Allows you to get the list of your Lists and their IDs.
Creates a new contact.
Creates a new Contact Lists.
Delete existing Contact List.
Deletes Contact by his email.
Allows you to update Contact in Mailtrap

Follow a simple walkthrough to create, test, and launch your first automation.
Connect your apps
Link the apps you want to automate.
Configure your workflow
Set up triggers, actions, and map your data.
Test & publish
Test your workflow and publish it.
Recognized by leading review platforms and trusted by 10,000+ businesses worldwide.
Just describe the task in plain English. viaSocket AI selects the right apps, builds the workflow, maps the fields, and prepares everything for review before you publish.

Discover viaSocket, an AI-powered workflow automation platform with 2,300+ integrations. Learn what it is, how it works, and how to set up no-code automated workflows.

Five practical automation hacks to cut repetitive tasks and boost productivity using viaSocket, covering lead generation, onboarding, accounting, support, and HR.

Explore workflow automation: its definition, benefits, how it works, real-world examples, and how to automate with viaSocket.

Discover what webhooks are, how they work, and when to use them. Compare push-based webhooks with APIs and polling, with practical examples and ViaSocket integration.
viaSocket Support
We're here to help
Instant answers
AI assistant available 24/7
Expert support
Connect with our specialists
Trusted & secure
Your data is safe with us
No credit card required. Set up your first workflow in minutes.
Mailtrap is an email delivery platform covering email sending (API/SMTP) bundled with inbound email, also featuring email testing (Sandbox), and Email Marketing. It's used by developer and product teams for transactional and bulk email delivery and offers reliable sending tools with built-in deliverability protection, including separation between transactional and bulk email, automatic authentication setup, and analytics insights broken down by mailbox provider.
Learn moreCustomer.io is a versatile marketing automation platform designed to help businesses create, send, and optimize targeted email campaigns. It enables users to engage with their audience through personalized messaging and automated workflows, ensuring effective communication and improved customer relationships.
Learn moreSign up for a free viaSocket account, then authorize both your Mailtrap and Customer.io accounts. From there, pick a trigger in one app and an action in the other. Your first workflow can be live in under five minutes.
Yes. viaSocket uses instant triggers where available, so data moves between Mailtrap and Customer.io as soon as the event happens. Scheduled polling triggers run at a maximum interval of 15 minutes.
Yes. You can map specific fields, apply filters to skip records that do not match your conditions, and transform values before they reach Customer.io. No coding required.
Yes. You can set up a workflow where Mailtrap triggers actions in Customer.io, and a separate workflow where Customer.io triggers actions in Mailtrap. Both run independently and in real time.
viaSocket logs every run so you can see exactly what succeeded and what failed. Failed tasks can be retried from the dashboard without re-configuring the workflow.
Yes, there is a free plan that covers basic workflows between Mailtrap and Customer.io. Paid plans unlock higher task limits, faster polling, and advanced features like multi-step workflows and conditional logic.
No. The entire Mailtrap and Customer.io integration is built through a visual, point-and-click interface. Code blocks are available if you want them, but they are never required.