ActiveCampaign vs Customer.io
Side-by-side from the Top 11 rankings of ActiveCampaign vs ConvertKit vs Brevo: 11 Best Email Marketing Software 2026 and HubSpot vs ActiveCampaign vs Klaviyo: 11 Best Marketing Automation Software 2026. Last verified June 4, 2026.
The short answer
ActiveCampaign ranks higher on Top 11 (#1 vs #6) for Small business owners and marketers choosing email marketing tools (Mailchimp alternatives) / Marketing managers choosing marketing automation platforms (HubSpot vs Marketo vs ActiveCampaign vs Klaviyo). Unmatched automation and integrated CRM make it the top choice for businesses ready to scale their marketing efforts.
At a glance
| ActiveCampaign | Customer.io | |
|---|---|---|
| Top 11 rank | #1 / ActiveCampaign vs ConvertKit vs Brevo: 11 Best Email Marketing Software 2026 | #6 / HubSpot vs ActiveCampaign vs Klaviyo: 11 Best Marketing Automation Software 2026 |
| Score (out of 9.4) | 9.2 | 8.2 |
| Best for | Advanced automation & CRM | Event-driven messaging for tech |
| Pricing | $$ ($29 to $479+/mo) | $$ ($100 to $1,500/mo) |
| HQ | Chicago, USA | Portland, USA |
| Founded | 2003 | 2012 |
ActiveCampaign
Unmatched automation and integrated CRM make it the top choice for businesses ready to scale their marketing efforts.
www.activecampaign.comSee full entry in ActiveCampaign vs ConvertKit vs Brevo: 11 Best Email Marketing Software 2026
Customer.io
A flexible, API-first platform for tech companies to automate messaging based on user behavior.
customer.ioSee full entry in HubSpot vs ActiveCampaign vs Klaviyo: 11 Best Marketing Automation Software 2026
Methodology and scoring weights live at /methodology. No vendor pays for placement — see about.