Marketo to Postgres Heroku integration — real-time, two-way sync

Yes. Stacksync provides a managed, real-time two-way integration between Marketo and Postgres Heroku: authenticate both systems, choose the objects to sync (such as Marketo's Static Lists and Programs and Program Members), map fields visually, and changes propagate both ways in milliseconds — no code required.

Common patterns for Marketo and Postgres Heroku: Build audiences from your own data; Engagement and results next to the customer; React to marketing changes as row changes. Segments computed in Postgres Heroku from product usage, orders, or account status sync into Marketo as lists or audiences, so campaigns and ads target the people your data says they should.

Marketo: Marketo REST API (JSON over HTTPS) for Leads, Companies, Opportunities, Custom Objects, Activities, Lists, Programs, and Campaigns, plus an asynchronous Bulk Import (leads) and Bulk Extract (leads/activities/program members/custom objects) API and an Asset REST API for emails, forms, and landing pages. Authentication: OAuth 2.0 client_credentials (2-legged): GET the Identity URL /oauth/token?grant_type=client_credentials with a Custom Service client_id and client_secret to receive an access token valid for 3600 seconds, then send it as Authorization: Bearer on each call. The instance base URL is https://{munchkinId}.mktorest.com; passing the token as an access_token query parameter is deprecated (removal July 31, 2026). Postgres Heroku: SQL wire protocol (standard PostgreSQL). Authentication: Database credentials from the Heroku DATABASE_URL config var; SSL required. Stacksync manages authentication, retries, and rate limits on both sides.

Postgres Heroku: Heroku Postgres is standard PostgreSQL, so any Postgres client, driver, or SQL tool connects unchanged. Marketo: Authentication is OAuth 2.0 client_credentials: GET the Identity URL /oauth/token to receive an access token valid for 3600 seconds, sent as an Authorization: Bearer header; the instance base URL is https://{munchkinId}.mktorest.com. Stacksync's field mapping accounts for these differences between Marketo and Postgres Heroku without custom code.

Stacksync is SOC 2 Type II and ISO 27001 certified with HIPAA BAA support. Data is encrypted in transit, and a zero-persistent-storage architecture means Marketo and Postgres Heroku records are not retained after a sync operation.

Stacksync pricing is usage-based and starts at $1,000/month, including the managed Marketo and Postgres Heroku connectors, real-time two-way sync, monitoring, and support. That replaces building and maintaining a custom Marketo–Postgres Heroku integration in-house.