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A Customer.io alternative for messaging and support.

Messages and replies in one place. Send in-app messages, email and push from the platform that also handles the questions, bug reports and feature requests they generate. Gleap Team includes messaging, onboarding tools, every agent and unlimited seats.

4.6/5 on G2
Trusted by 4,500+ teams worldwide
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Trusted by 4,500+ teams, from startups to global businesses
In-app messages
Email
Push
Replies
Send the message, then handle what customers say back.
Compare plans
Customer.io vs Gleap at a glance. Gleap is a support and feedback platform that also sends in-app messages, email and push, from $179/month on monthly billing with unlimited seats; Customer.io is a customer engagement platform priced by profiles and email volume, from $100/month for 5,000 profiles (checked September 25, 2026).
Features
Gleap
Customer.io
Primary focus
Gleap
Support and feedback platform with in-app messages, email and push
Customer.io
Customer engagement platform with journeys, data tooling and messaging channels
Pricing unit
Gleap
Starter $35/month on monthly billing or $29 billed annually; Team $179/month on monthly billing or $149 billed annually with unlimited seats, projects and every Kai agent; Pro $359/month ($299 annually) adds advanced reports, LLM model choice, the SOC 2 report and priority support; AI usage separate. USD list prices, checked September 30, 2026
Customer.io
By profiles and email volume: Essentials from $100 per month for 5,000 profiles; Premium from $1,000 billed yearly. USD list prices, checked September 25, 2026
Channels
Gleap
In-app messages, email and push, plus tours, checklists and surveys, from Team
Customer.io
Email, push, in-app, SMS, WhatsApp and LINE
Automation
Gleap
Audience, trigger and frequency rules for each message
Customer.io
Visual journeys with event, segment and webhook triggers and A/B tests
Messaging with support attached. Customer.io is a dedicated engagement platform with journeys, data tooling and channels including SMS, WhatsApp and LINE. Gleap includes in-app messages, email, push, tours, checklists and surveys as part of a support and feedback platform. Choose Gleap when the replies, bug reports and requests your messages generate should land in the same workspace.
Different units. Different scope.
USD list prices on monthly billing, checked September 25, 2026. AI usage, overage, add-ons and taxes excluded; features differ.
Gleap Team
$179 / month$179 / month$179 / month
Unlimited seats, projects and every Kai agent. $149/month with annual billing. Pro adds reports, LLM model choice and the SOC 2 report from $299/month.
Shared inbox and Kai Support customer answers
In-app messages, email and push
Tours, checklists and surveys
Bug reports, roadmap and knowledge base
Start free trial
Support and messaging
Customer.io Essentials
From $100 / monthFrom $100 / monthFrom $100 / month
5,000 profiles, billed monthly. Premium starts at $1,000/month billed yearly.
Journeys, segments and AI Agent (beta)
Email, push, in-app, SMS, WhatsApp and LINE
1 million emails a month, then $0.12 per 1,000
Unlimited user seats, two workspaces
See comparison details
Price the scope you need. Gleap Starter is $29/month billed annually ($35 monthly); Team is $179/month month to month or $149/month billed annually, with unlimited seats and projects and every Kai agent (Pro, at $299/month, adds advanced reports, LLM model choice, the SOC 2 report and priority support), with AI usage billed separately. Customer.io prices by profiles and email volume: Essentials from $100/month for 5,000 profiles, Premium from $1,000/month billed yearly. Compare your profile count, sends and the support scope you need; a lower total cost is not assumed.

Meet your AI team.

Answer customers. Investigate issues. Build what comes next. Kai Support is on every plan; Kai Resolve, Kai Code and Kai PM are on Team and up. AI usage is billed separately on every plan.

Kai Support

Answers customers

Answers from your knowledge base and connected sources. Brings your team in when needed.

Meet Kai Support

Kai Resolve

Investigates hard tickets

Reads logs, the click trail, screenshots and code. Returns findings and prepares coding tasks for confirmed bugs.

Meet Kai Resolve

Kai Code

Builds the fix

Plans the change, writes and tests code, and opens a pull request. Your engineers review and merge.

Meet Kai Code

Kai PM

Prioritizes requests

Triages feedback, finds duplicates and scores requests. You decide what belongs on the roadmap.

Meet Kai PM

Send to the right people.

Trigger, audience, frequency.
Set who receives a message, what triggers it and how often it can repeat. The audience uses the same customer attributes and events your support team sees in the inbox.
Explore messaging

See what each email did.

Delivery, opens and clicks.
Write the email in the editor, send it on an event or once to the matching audience, and review delivery, opens and clicks. Each email has a reply assignee, and replies come back as tickets in the inbox.
Explore email

Guide the first steps.

Checklists, tours and tooltips.
Build a checklist with an action and a completion rule for each task, or a tour for the screen it explains. Target by audience and see progress without a second onboarding tool.
Explore checklists

Answer what comes back.

Kai Support first, your team when needed.
A message that raises a question turns into a conversation in the same widget. Kai Support answers from your knowledge sources and brings a teammate in when the reply needs a person.
Explore Kai Support

Turn a reply into a fix.

Report, findings, reviewed code.
When a reply describes a bug, the report can carry screenshots, replay and logs. From Team, Kai Resolve returns findings to the ticket and Kai Code prepares a pull request your engineers review.
Explore Kai Resolve

Pilot one flow end to end.

Keep dedicated journey tooling where you need it.

Separate journeys from replies.

List the multi-step journeys, SMS, WhatsApp and data pipeline work your marketing team depends on. Keep Customer.io or a similar tool for what Gleap does not cover.

Rebuild one sequence.

Recreate one onboarding flow in Gleap: audience, trigger, email and in-app message. Follow a reply into the inbox and a reported bug into a ticket before moving more.

Plan the data move.

No native Customer.io importer is assumed. Export contacts and attributes, identify users through the SDK, and confirm which history and templates you need before switching a live flow.
How teams use Gleap
“Everything is in the same place.”
Tridonic brought customer conversations, ticket routing, surveys, and AI support into one Gleap workspace.
Elif Kavas
Digital Customer Experience Platforms Specialist, Tridonic
“An essential part of our development process.”
Gleap was implemented within minutes and helps MARK.ONE fix bugs quickly while building real customer relationships.
Mark Breuß
Founder, MARK.ONE
AI support handles about half of Lywand’s customer inquiries.
Lywand runs AI answers, its knowledge base and ticketing in Gleap. The support result reflects its own workflow.
Peter Müller
System Engineer & Head of Support, Lywand
Your switching questions, answered. Messaging scope, pricing units, replies and product work.
Moving from Customer.io
Why choose Gleap as a Customer.io alternative?
Choose Gleap when the messages you send and the replies they generate should live in one workspace. Gleap Team includes in-app messages, email, push, tours, checklists and surveys next to a shared inbox, Kai Support and bug reporting, with unlimited seats. Customer.io fits teams that need deep journey and data tooling across email, push, in-app, SMS, WhatsApp and LINE.
What does Customer.io do well?
Customer.io is a dedicated customer engagement platform. Its Journeys page documents a visual workflow builder with segment, event, form, date and webhook triggers, A/B testing, LLM actions and channels including SMS, WhatsApp and LINE, and every plan includes an AI Agent, labeled beta on the pricing page, that builds, analyzes and optimizes automations. Keep it, or a similar tool, when those journeys are central to your marketing.
Is Gleap cheaper than Customer.io?
Not for messaging. Customer.io Essentials starts at $100/month billed monthly for 5,000 profiles, below Gleap Team, which includes messaging, at $179/month month to month or $149/month billed annually. Customer.io bills by profiles and email volume, with overage at $0.009 per profile and $0.12 per 1,000 emails; Gleap bills a subscription with unlimited seats, 1,000 emails a month included, then $2 per 1,000, and separate AI usage. Compare your profile count, sends and the support scope you need. USD list prices, checked September 25, 2026; see Customer.io pricing and Gleap pricing.
Which Customer.io plan should we compare with?
Compare Essentials for a first messaging setup and Premium when you need custom profile volume, data warehouse destinations, anonymous messages or chat support. Essentials is billed monthly; Premium starts at $1,000/month billed yearly, and Enterprise is quoted. Companies that raised under $10M can apply for up to twelve months free on a Startup plan through Customer.io's startup program; Gleap's startup program offers 50% off Team or Pro for the first 12 months, subject to approval.
Which Gleap plan includes the specialist agents?
Team, Pro and Enterprise include Kai Resolve, Kai Code and Kai PM, along with outbound messaging and onboarding tools. Starter includes Kai Support and live chat for one seat. Team is $179/month or $149/month billed annually; AI usage is billed separately on every plan.
Does Gleap replace Customer.io's journeys, SMS and data pipelines?
No. Gleap sends in-app messages, email and push with audience, trigger and frequency rules, and this page does not claim parity with Customer.io's multi-step journeys, SMS, WhatsApp and LINE sends, reverse ETL or data warehouse destinations. Evaluate those requirements separately and keep dedicated tooling where you need it. See Gleap messaging.
What does switching involve?
Plan the contact and attribute export, user identification through the SDK, templates and the flows you want to rebuild. No native Customer.io importer is assumed. Export a sample, pilot one onboarding flow with a real audience, then move live sends when replies and reporting look right.
How was this comparison checked?
Gleap publishes this comparison. Customer.io's pricing page was rechecked on 25 September 2026; its Journeys, in-app messages, AI Agent and mobile SDK pages were checked on 15 September 2026. Gleap claims follow current product and plan evidence. Customer quotations describe their attributed experience, not a controlled comparison with Customer.io.
Where do replies to our messages go?
Replies open a conversation in the Gleap inbox. An in-app message reply continues in the widget, an email reply arrives as a ticket with the assignee you chose, and Kai Support answers routine questions before handing over to your team. Customer.io's Journeys and in-app pages describe outbound and transactional messaging; confirm how you handle replies today before comparing.
Can Gleap send in-app messages and push on mobile?
Yes. Gleap has web, iOS, Android, React Native and Flutter SDKs; in-app messages, push through Firebase Cloud Messaging and bug reporting depend on the SDK and configuration, so test each platform. Customer.io documents iOS, Android, React Native, Expo and Flutter SDKs for push and in-app messages. See push notifications.
Can we check security and data hosting before switching?
Yes. Gleap customers choose EU or US data residency at signup. Review the Gleap Trust Center for certifications, data handling and subprocessors, then compare with the SOC 2, US and EU data centers and HIPAA options listed on Customer.io's pricing page. Bring residency and retention requirements to the pilot.
How does a customer conversation become product work?
Messages create replies, and replies carry the questions, bugs and requests that start product work. Gleap connects that context to investigation, planning and reviewed code, with your team deciding what ships. Explore self-driving development.
Kai Support First level support Kai Resolve Second level support engineer
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4.6/5
on G2

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