Customer.io vs Omnisend
Side-by-side from the Top 11 ranking of The 11 Best Marketing Automation Software (2026). Last verified June 7, 2026.
The short answer
Customer.io ranks higher on Top 11 (#6 vs #10) for Marketing managers choosing marketing automation platforms (HubSpot vs Marketo vs ActiveCampaign vs Klaviyo). A flexible, API-first platform for tech companies to automate messaging based on user behavior.
At a glance
| Customer.io | Omnisend | |
|---|---|---|
| Top 11 rank | #6 / The 11 Best Marketing Automation Software (2026) | #10 / The 11 Best Marketing Automation Software (2026) |
| Score (out of 9.4) | 8.2 | 7.4 |
| Best for | Event-driven messaging for tech | Klaviyo alternative for e-commerce |
| Pricing | $$ ($100 to $1,500/mo) | $$ ($16 to $99+/mo) |
| HQ | Portland, USA | London, UK |
| Founded | 2012 | 2014 |
Customer.io
A flexible, API-first platform for tech companies to automate messaging based on user behavior.
customer.ioSee full entry in The 11 Best Marketing Automation Software (2026)
Omnisend
A strong e-commerce platform that excels at integrating SMS and push notifications into automated workflows.
www.omnisend.comSee full entry in The 11 Best Marketing Automation Software (2026)
Methodology and scoring weights live at /methodology. No vendor pays for placement — see about.