Implemented

Marketing & advertising

MailerLite

Read and upsert MailerLite subscribers; manage groups, group membership, fields and segments; read campaigns with stats, automations and forms.

Keep MailerLite audiences in step with sign-ups, CRMs and shops while preserving each subscriber's consent status, and report campaign engagement.

Build a flow with MailerLite Provider API documentation

Source actions

Destination actions

Data types

Validation status

Implemented · fixture tested.

Implementation is checked against provider-shaped fixtures for every action, authentication failures, rate limits, pagination and duplicate safety. Provider sandbox and authorised account validation are recorded separately when credential-backed runs are completed.

What you can map

automation activity

List automation subscriber activity
Source
Subscribers in an automation by queue status.
automation_activity.list

automations

Get automation
Source
An automation with steps, email stats and triggers.
automations.get
List automations
Source
Automations with enabled state, steps and stats.
automations.list

campaign subscriber activity

List campaign recipient activity
Source
Per-recipient opens and clicks for a sent campaign.
campaign_subscriber_activity.list

campaigns

Create draft campaign
Destination
Not retried automatically
Approval before production
Creates a regular campaign as a draft; it is not scheduled or sent.
campaigns.create
Get campaign
Source
A campaign with emails and delivery stats.
campaigns.get
List campaigns
Source
Campaigns with status, sender, audience and delivery stats.
campaigns.list

fields

Create field
Destination
Not retried automatically
Approval before production
Creates a custom subscriber field.
fields.create
List fields
Source
Default and custom subscriber fields with key and type.
fields.list
Rename field
Destination
Provider duplicate protection
Approval before production
Renames a custom field (the key does not change).
fields.update

form subscribers

List form sign-ups
Source
Subscribers who signed up through a form.
form_subscribers.list

forms

Get form
Source
A form with conversion stats.
forms.get
List forms
Source
Pop-up, embedded or promotion forms with conversion stats.
forms.list

group memberships

Add subscriber to group
Destination
Provider duplicate protection
Approval before production
Assigns an existing subscriber to a group; repeating it has no further effect.
group_memberships.create

group subscribers

List group subscribers
Source
Subscribers in a group (active by default).
group_subscribers.list

groups

Create group
Destination
Not retried automatically
Approval before production
Creates a subscriber group.
groups.create
List groups
Source
Groups with subscriber counts and engagement rates.
groups.list
Rename group
Destination
Provider duplicate protection
Approval before production
Renames a subscriber group.
groups.update

segment subscribers

List segment subscribers
Source
Subscribers in a segment (active by default).
segment_subscribers.list

segments

List segments
Source
Segments with size and engagement rates.
segments.list
Rename segment
Destination
Provider duplicate protection
Approval before production
Renames a segment.
segments.update

subscriber activity

List subscriber activity
Source
A subscriber's activity log (sends, opens, clicks, unsubscribes, preference changes).
subscriber_activity.list

subscribers

Get subscriber
Source
A subscriber by ID or email address.
subscribers.get
List subscribers
Source
Subscribers with fields, engagement counts and consent timestamps.
subscribers.list
Update subscriber
Destination
Provider duplicate protection
Approval before production
Updates a subscriber by ID. Group IDs, when given, replace the subscriber's group membership.
subscribers.update
Create or update subscriber
Destination
Provider duplicate protection
Approval before production
Creates a subscriber or updates the one with this email; fields and groups are only added, never removed.
subscribers.upsert

Authentication

API token (bearer)

Plans and access

All MailerLite plans (new MailerLite) include the API; custom HTML campaign content needs the Advanced plan. API tokens have full account access; create a dedicated token per integration.

Test environment

A free MailerLite account works for testing.

Rate limits

120 requests per minute per account; HTTP 429 when exceeded.

Pagination

Subscriber lists use cursors (meta.next_cursor); groups, segments, fields, campaigns, automations and forms use page numbers.

Provider events

Webhooks for subscriber, campaign and automation events. Nexra event triggers are not yet available; flows run on demand or on a schedule.

Before you build a flow

Deleting or forgetting subscribers, unassigning groups and deleting groups, fields, segments, campaigns and forms are not implemented.
Campaigns can be created as drafts only; scheduling or sending campaigns to audiences is not implemented.
Subscriber status, resubscribe and opt-in timestamps change only when a flow maps them explicitly.
Updating a subscriber with group IDs replaces their group membership (unlisted groups are removed); use the add-to-group operation for additive changes.
Group and campaign creation have no idempotency key; uncertain writes are not repeated automatically.

Developer reference

Create the MailerLite credentials described above with the narrowest permissions your flows need.
In Nexra, open Connect, then Connections, then New connection, choose MailerLite, enter its settings and credentials, and tick only the write actions you need. Connection guide
Test the connection, then use its actions as flow sources and destinations. Flow guide

MailerLite docsAPI reference MailerLite docsAuthentication MailerLite docsRate limits MailerLite docsWebhooks

Machine-readable detail: GET /api/public/connect/connectors/mailerlite and the Connections API.