# Customer.io alternatives: what AI models name instead, September 2026

GTM AI Recommendation Index, September 2026 Edition. 763 of the 864 answers in the 4 categories where Customer.io holds a standing named it neither first nor as an alternative; these are the first choices those answers made. Page: https://gtm-ai-index.com/vendors/customer-io/alternatives/

## Named instead, most often (every category and segment added)

- OneSignal: 104
- Braze: 80
- ActiveCampaign: 49
- HubSpot Marketing Hub: 48
- Adobe Marketo Engage: 33
- AppsFlyer: 27

## Mobile marketing and push

**Small business**: 64 of 72 answers did not name Customer.io (Customer.io is #9 of 19 at 2%).

- OneSignal: first choice in 35 of those 64
- SlickText: first choice in 8 of those 64
- SimpleTexting: first choice in 6 of those 64
- Omnisend: first choice in 5 of those 64
- Klaviyo: first choice in 3 of those 64
- ActiveCampaign: first choice in 2 of those 64
- Pushwoosh: first choice in 2 of those 64
- Sender: first choice in 2 of those 64

**Mid-market**: 49 of 72 answers did not name Customer.io (Customer.io is #2 of 17 at 34%).

- OneSignal: first choice in 19 of those 49
- Braze: first choice in 4 of those 49
- Omnisend: first choice in 3 of those 49
- Airship: first choice in 1 of those 49
- Bird: first choice in 1 of those 49
- Courier: first choice in 1 of those 49
- Knock: first choice in 1 of those 49
- Meera: first choice in 1 of those 49

**Enterprise**: 64 of 72 answers did not name Customer.io (Customer.io is #7 of 12 at 2%).

- Braze: first choice in 27 of those 64
- Airship: first choice in 9 of those 64
- Attentive: first choice in 5 of those 64
- Courier: first choice in 5 of those 64
- OneSignal: first choice in 3 of those 64
- Staffbase: first choice in 3 of those 64
- Pushwoosh: first choice in 2 of those 64
- Twilio Programmable Messaging: first choice in 2 of those 64

## Mobile apps

**Small business**: 64 of 72 answers did not name Customer.io (Customer.io is #6 of 12 at 4%).

- OneSignal: first choice in 22 of those 64
- AppsFlyer: first choice in 8 of those 64
- App Radar: first choice in 4 of those 64
- Textedly: first choice in 4 of those 64
- Adjust: first choice in 3 of those 64
- Apple Search Ads: first choice in 3 of those 64
- Google App Campaigns: first choice in 3 of those 64
- AppFollow: first choice in 2 of those 64

**Mid-market**: 62 of 72 answers did not name Customer.io (Customer.io is #2 of 16 at 15%).

- AppsFlyer: first choice in 11 of those 62
- Meta Advantage+ App Campaigns: first choice in 9 of those 62
- Braze: first choice in 6 of those 62
- Apple Search Ads: first choice in 5 of those 62
- CleverTap: first choice in 5 of those 62
- Google App Campaigns: first choice in 5 of those 62
- Adjust: first choice in 3 of those 62
- OneSignal: first choice in 3 of those 62

**Enterprise**: 68 of 72 answers did not name Customer.io.

- Braze: first choice in 26 of those 68
- AppsFlyer: first choice in 8 of those 68
- Airship: first choice in 5 of those 68
- Staffbase: first choice in 3 of those 68
- Apple Search Ads: first choice in 2 of those 68
- Maestra: first choice in 2 of those 68
- MoEngage: first choice in 2 of those 68
- Salesforce Marketing Cloud: first choice in 2 of those 68

## In-app messaging and customer communications

**Small business**: 67 of 72 answers did not name Customer.io (Customer.io is #10 of 12 at 2%).

- OneSignal: first choice in 15 of those 67
- Crisp: first choice in 6 of those 67
- Intercom: first choice in 6 of those 67
- Userpilot: first choice in 4 of those 67
- Gleap: first choice in 3 of those 67
- Slack: first choice in 3 of those 67
- tawk.to: first choice in 3 of those 67
- Appcues: first choice in 2 of those 67

**Mid-market**: 60 of 72 answers did not name Customer.io (Customer.io is #4 of 15 at 5%).

- Intercom: first choice in 5 of those 60
- OneSignal: first choice in 5 of those 60
- Signal: first choice in 4 of those 60
- Userpilot: first choice in 4 of those 60
- Front: first choice in 3 of those 60
- Tencent RTC Chat: first choice in 3 of those 60
- Appcues: first choice in 2 of those 60
- Braze: first choice in 2 of those 60

**Enterprise**: 67 of 72 answers did not name Customer.io.

- Braze: first choice in 14 of those 67
- Intercom: first choice in 12 of those 67
- Pendo: first choice in 5 of those 67
- Sendbird: first choice in 5 of those 67
- Stream: first choice in 3 of those 67
- Microsoft Teams: first choice in 2 of those 67
- OneSignal: first choice in 2 of those 67
- Pylon: first choice in 2 of those 67

## Marketing automation and campaign management

**Small business**: 67 of 72 answers did not name Customer.io.

- ActiveCampaign: first choice in 37 of those 67
- HubSpot Marketing Hub: first choice in 14 of those 67
- Brevo: first choice in 9 of those 67
- MailerLite: first choice in 3 of those 67
- Mailchimp: first choice in 1 of those 67
- Sender: first choice in 1 of those 67

**Mid-market**: 63 of 72 answers did not name Customer.io (Customer.io is #7 of 11 at 0%).

- HubSpot Marketing Hub: first choice in 26 of those 63
- Brevo: first choice in 13 of those 63
- ActiveCampaign: first choice in 10 of those 63
- Adobe Marketo Engage: first choice in 3 of those 63
- HubSpot Marketing Hub Professional or Enterprise: first choice in 1 of those 63
- MailerLite: first choice in 1 of those 63

**Enterprise**: 68 of 72 answers did not name Customer.io.

- Adobe Marketo Engage: first choice in 30 of those 68
- Salesforce Marketing Cloud: first choice in 11 of those 68
- HubSpot Marketing Hub: first choice in 8 of those 68
- Salesforce Marketing Cloud Account Engagement: first choice in 2 of those 68
- Adobe Campaign: first choice in 1 of those 68
- Braze: first choice in 1 of those 68
- Mautic: first choice in 1 of those 68
- Oracle Eloqua: first choice in 1 of those 68

Published under CC BY 4.0. The output is the models' output; nothing here is a recommendation by the index.