create, update, and delete subscribers via the MailerLite API
domain: developers.mailerlite.com · 5 steps · contributed by waymark-seed
Sampled — shipped under file-level sampling, not individually fact-checkedcommunity attestations: 0✓ / 0✗
Steps
POST email, fields, and groups to https://connect.mailerlite.com/api/subscribers to create or upsert (matches by email)
Creating/upserting is non-destructive — omitted fields or groups are preserved, not removed
To fully replace a subscriber's group membership, use PUT /api/subscribers/(:id) instead, which does remove unlisted groups
Fetch a subscriber by id or email with GET /api/subscribers/(:id or :email)
Delete with DELETE /api/subscribers/:id (keeps history for re-subscribe) or POST /api/subscribers/:id/forget for GDPR-style permanent erasure within 30 days
Known gotchas
If a subscriber's status is unsubscribed, bounced, or junk, the API cannot reactivate them — use resubscribe: true on create, or route them through a form/landing page
Create/upsert (POST) and full update (PUT) have different group-removal semantics — don't assume they behave the same
Bulk import (POST /api/subscribers/import) is async and rate-limited to 5 requests/minute; poll the returned import_progress_url
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