GetResponse API
Provides a REST API and OAuth2 access to GetResponse's email marketing platform including contact management, campaign sending, autoresponders, landing page creation, and webinar scheduling.
Score Breakdown
⚙ Agent Friendliness
🔒 Security
OAuth2 scope model provides reasonable granularity for third-party apps. API key auth has no scope restrictions — prefer OAuth2 in multi-tenant agent deployments.
⚡ Reliability
Best When
You need a single API to manage the full email marketing lifecycle — list management, automation sequences, and landing pages — for a marketing-led growth workflow.
Avoid When
You only need basic transactional email sending and don't need the marketing automation, landing page, or webinar features, as simpler ESPs will be cheaper and easier to integrate.
Use Cases
- • Subscribe new users from a product sign-up flow into a targeted email list and trigger a welcome autoresponder sequence automatically
- • Sync contact tags and custom field data from a CRM into GetResponse to power behavioral segmentation for campaigns
- • Create and schedule a broadcast email campaign programmatically after a product announcement is approved in an internal workflow
- • Pull campaign performance metrics (opens, clicks, bounces) into a reporting dashboard via scheduled API calls
- • Add webinar registrants fetched from an event platform into a GetResponse contact list for post-event follow-up sequences
Not For
- • Transactional email delivery for triggered system notifications (use a transactional ESP like SendGrid or Postmark instead)
- • Real-time bidirectional chat or conversational messaging
- • Large-scale data warehouse ingestion of marketing events (no streaming export)
Interface
Authentication
Simple API key via X-Auth-Token header for personal integrations; OAuth2 with scopes required for third-party applications acting on behalf of users.
Pricing
API access is available on all tiers including free. Advanced automation workflows require paid tiers.
Agent Metadata
Known Gotchas
- ⚠ OAuth2 access tokens expire after one hour — agents on long-running workflows must implement token refresh logic proactively
- ⚠ Contact creation will silently deduplicate by email but field updates on existing contacts require a separate PATCH call, not just re-POSTing
- ⚠ The API uses both singular and plural resource names inconsistently across endpoints, which can confuse code generators
- ⚠ Sending a campaign via API schedules it but does not guarantee immediate delivery — agents should not assume sent == delivered
- ⚠ Webhooks for campaign events (opens, clicks) require subscribing to each list separately, not at the account level, making large multi-list setups tedious to configure
Alternatives
Full Evaluation Report
Detailed scoring breakdown, competitive positioning, security analysis, and improvement recommendations for GetResponse API.
Scores are editorial opinions as of 2026-03-06.