Campaign Monitor Data Extractor

Vern's Campaign Monitor extractor imports a new user's email data — admins, client details, clients, and draft campaigns — into your product through a single managed migration, handling Campaign Monitor's auth, pagination, and rate limits for you. It's built for teams onboarding customers off Campaign Monitor who want their data in your app from day one.

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Campaign Monitor

SaaS API (REST)

Managed auth, retries, and throttling

Normalized JSON, CSV, and DB-ready output

Cleaned JSON, CSV, and DB-ready output

Export coverage

Know exactly what Vern pulls before you migrate.

Objects Vern extracts

Vern extracts the full set of queryable Campaign Monitor objects (12 total), including: Admins, Client Details, Clients, Draft Campaigns, People, Scheduled Campaigns, Segments, Sent Campaigns, Subscriber Lists, Suppression Lists, Tags, and Templates. 1 of these support incremental change tracking, so syncs pull only what changed.

Output schema

Normalized JSON per object with referential keys preserved, so the relationships between your user's records survive the import. Timestamps are returned in ISO 8601. Delivered as JSON or CSV, or loaded straight into your own application database or pushed to your API — whatever your product expects.

Where it can land

Your own application database (Postgres, MySQL), a direct push to your API or webhook, or JSON/CSV files, plus another email system (BigMailer, Campayn, Elasticemail) when a user is switching tools.

Source details

Built for the source type shown above, with extractor content refreshed from the collection record.

Managed by Vern

The details you normally have to build yourself.

Authentication

Basic authentication (username + password / secret). Your user connects their Campaign Monitor account once; Vern stores the credential encrypted and signs each request. See Campaign Monitor's authentication guide.

Pagination

Vern detects and handles Campaign Monitor's paging model (cursor, page-number, or offset) internally and returns one consistent, de-duplicated result set — so you import a user's complete data without ever managing page tokens.

Rate limits and gotchas

Campaign Monitor enforces its own API rate limits (see Campaign Monitor's rate-limit docs). Vern queues and throttles requests internally so importing a new user's data never trips a 429 — even on a large account.

Basic-auth sources transmit credentials on every call and often lack granular scopes, so have your user connect a read-only account where possible. Vern stores the credential encrypted and never logs it.

API quickstart

1. Create a migration for Campaign Monitor
curl -X POST https://app.vern.so/api/v1/migrations \
  -H "x-api-key: $VERN_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{ "name": "Campaign Monitor → Postgres", "source": "Campaign Monitor" }'
→ { "migration_id": "mig_..." }
2. Generate the extraction recipe (pulls live via the Campaign Monitor API)
curl -X POST https://app.vern.so/api/v1/migrations/$MIGRATION_ID/runs \
  -H "x-api-key: $VERN_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{ "kind": "generate", "extract_via_api": true }'
3. Run the approved extraction
curl -X POST https://app.vern.so/api/v1/migrations/$MIGRATION_ID/runs \
  -H "x-api-key: $VERN_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{ "kind": "execute" }'
4. Download the normalized CSV export
curl https://app.vern.so/api/v1/migrations/$MIGRATION_ID/exports/{template} \
  -H "x-api-key: $VERN_API_KEY" -o campaign-monitor_export.csv

A cleaner way to extract without rebuilding source-specific plumbing.

View docs

Common questions

Can I keep a user's Campaign Monitor data in sync after the first import? Yes — 1 Campaign Monitor objects support incremental change tracking, so after the first full import Vern pulls only what changed on re-run.

Can I move a user from Campaign Monitor to BigMailer? Yes — Vern normalizes the Campaign Monitor data model into typed tables that map cleanly onto BigMailer and into your own product.

What does it cost to read the Campaign Monitor API? Campaign Monitor's own API access follows Campaign Monitor's pricing/plan; Vern is billed separately per import. Check Campaign Monitor's developer docs for their current limits.