How to Integrate OptinMonster with Marketo
Emel DalabasmazAdobe Marketo Engage still issues REST credentials from Admin → Integration → LaunchPoint. That path is current as of Adobe's REST authentication docs (updated 4 August 2026).
OptinMonster's public pricing grid on 23 August 2026 names HubSpot, Klaviyo, Zapier and webhooks as Pro integrations. It does not name Marketo. If Marketo is missing from your Integrations search, you are on the wrong plan or the native connector has been pulled. The Form Embed block can still host a Marketo form. We could not load a live OptinMonster Marketo doc URL (older /docs/connect-optinmonster-marketo/ 404s).
If the native card is there:
1. In Marketo, create a custom LaunchPoint service (Custom, API-only user).
2. Admin → Integration → LaunchPoint → View Details on that service. Copy Client ID and Client Secret.
3. Admin → Integration → Web Services. Copy the REST API subdomain (the host, not the full URL).
4. In OptinMonster, open Integrations, search for Marketo, paste Client ID, Client Secret and subdomain.
5. Connect, pick a partition, pick a list, save.
Attach MonsterLeads as a backup. Custom Marketo forms still need their embed code adjusted if you want OptinMonster to count conversions. More connectors: OptinMonster integrations.
Written and reviewed by
SEO Executive at Flatart
Emel Dalabasmaz graduated in Advertising and Public Relations from Anadolu University. She began in social media and carried that grounding — content, brand communication and performance — into SEO. For more than ten years she has worked on growth for brands across a range of industries, pairing a communications perspective with data and technical analysis to build a digital presence that holds up over time.
- Education
- Advertising and Public Relations, Anadolu University
- Writes about
- Popup builders, Conversion rate optimization, On-site messaging, SaaS pricing research, SEO, Technical SEO, Content strategy, Digital marketing