Customer.io vs Splash Comparison: Reviews, Features, Pricing & Alternatives in 2026

Detailed side-by-side comparison to help you choose the right solution for your team

Updated May 2026 8 min read

Customer.io

0.0 (0 reviews)

Customer.io is a versatile customer engagement platform that allows you to send automated emails, push notifications, and SMS messages based on real-time behavioral data to improve user retention.

Starting at $100/mo
Free Trial 14 days
VS

Splash

0.0 (0 reviews)

Splash is an event marketing platform that helps you create branded event pages, manage guest lists, and measure the impact of your in-person, virtual, and hybrid event programs.

Starting at Free
Free Trial NO FREE TRIAL

Quick Comparison

Feature Customer.io Splash
Website customer.io splashthat.com
Pricing Model Subscription Freemium
Starting Price $100/month Free
FREE Trial ✓ 14 days free trial ✘ No free trial
Free Plan ✘ No free plan ✓ Has free plan
Product Demo ✓ Request demo here ✓ Request demo here
Deployment saas mobile cloud mobile
Integrations Segment Stripe Mixpanel Salesforce Slack Amplitude Zapier DataWarehouse Reverse ETL Twilio Salesforce HubSpot Marketo Slack Zoom Microsoft Teams Greenhouse Segment Google Analytics LinkedIn
Target Users small-business mid-market enterprise mid-market enterprise
Target Industries
Customer Count 0 0
Founded Year 2012 2011
Headquarters Portland, USA New York, USA

Overview

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Customer.io

Customer.io is a powerful automation platform designed to help you send relevant messages based on how people interact with your product. Instead of sending generic blasts, you can trigger personalized emails, SMS, and push notifications when users perform specific actions. This ensures your communication is always timely and contextually aware, helping you move customers through your lifecycle funnel more effectively.

You can manage complex messaging workflows using a visual builder that maps out the entire customer journey. Whether you are onboarding new users, re-engaging inactive ones, or sending transactional updates, the platform provides the data-driven tools you need. It is particularly effective for SaaS companies and mobile apps that rely on real-time user data to drive growth and long-term loyalty.

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Splash

Splash is an event marketing platform designed to help you execute high-impact event programs at scale. Instead of struggling with disconnected tools, you get a centralized system to build beautiful, mobile-responsive event pages, automate email communications, and manage guest registrations for any event type. Whether you are hosting a small VIP dinner or a massive global conference, you can maintain brand consistency across every touchpoint without needing a developer.

The platform solves the common headache of data silos by syncing attendee information directly with your CRM and marketing stacks. You can track real-time performance metrics to see which events drive the most pipeline and revenue. It is built for fast-moving marketing teams who need to launch events quickly while ensuring every detail—from the initial invite to the post-event follow-up—looks professional and stays on brand.

Overview

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Customer.io Features

  • Data-Driven Segments Create dynamic groups of users based on real-time actions they take or don't take within your application.
  • Visual Workflow Builder Design complex automated journeys with a drag-and-drop interface to visualize exactly how your customers receive messages.
  • Multi-Channel Messaging Reach your audience wherever they are by sending emails, SMS, push notifications, and in-app messages from one platform.
  • A/B Visual Testing Test different subject lines, content, or entire workflow paths to see which variations drive the best engagement.
  • Transactional API Send critical system updates like password resets or purchase receipts while maintaining your brand's look and feel.
  • Real-Time Analytics Track conversions and open rates instantly to understand how your automated campaigns impact your bottom line.
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Splash Features

  • Branded Event Pages. Create stunning, mobile-responsive event websites using a library of customizable templates that stay perfectly on-brand every time.
  • Email Marketing Automation. Design and schedule personalized invitations, reminders, and follow-up emails to keep your audience engaged throughout the event lifecycle.
  • RSVP & Ticketing. Manage guest lists and sell tickets easily with flexible registration forms that capture the specific attendee data you need.
  • On-Site Check-In App. Streamline guest entry with a dedicated mobile app that allows you to check in attendees and print badges instantly.
  • Virtual Event Integration. Host seamless digital experiences by connecting your event pages directly to major streaming and webinar platforms.
  • Real-Time Analytics. Measure your event's success with visual dashboards that track registrations, attendance rates, and overall marketing ROI.

Pricing Comparison

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Customer.io Pricing

Essentials
$100
  • Up to 5,000 profiles included
  • Unlimited emails and SMS
  • Visual workflow builder
  • Community support
  • Standard technical setup
  • Email and push notifications
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Splash Pricing

Free
$0
  • Unlimited personal events
  • Basic event page themes
  • Online RSVP management
  • Email invitations
  • Standard registration forms

Pros & Cons

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Customer.io

Pros

  • Highly flexible segmentation based on real-time events
  • Intuitive visual builder for complex automation workflows
  • Excellent deliverability rates for transactional and marketing mail
  • Robust API for deep technical integrations
  • Responsive and helpful technical support team

Cons

  • Higher starting price point than basic competitors
  • Steep learning curve for non-technical marketers
  • Requires developer resources for initial data integration
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Splash

Pros

  • Exceptional design flexibility for branded event pages
  • Intuitive user interface for non-technical team members
  • Seamless data syncing with Salesforce and HubSpot
  • Robust mobile app for smooth on-site check-ins

Cons

  • Learning curve for the advanced design editor
  • Custom pricing can be high for small teams
  • Limited reporting customization on lower-tier plans
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