Nexra
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Messaging, collaboration & support
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Mailgun

Send transactional email with Mailgun and read events, domains, tags, suppressions and stats; manage templates, mailing lists and list members.

Send notifications from business events, keep mailing list membership aligned with CRM records and feed delivery and bounce data back to source systems.

Build a flow with MailgunProvider API documentation

Source actions

14

Destination actions

8

Data types

12

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

bounces
  • List bounces
    Source

    Addresses suppressed after a bounce.

complaints
  • List complaints
    Source

    Addresses that reported mail as spam.

domains
  • Get domain
    Source

    One domain with its sending and receiving DNS records and verification state.

  • List domains
    Source

    Sending domains on the account with their state.

events
  • List events
    Source
    Incremental

    Accepted, delivered, failed, opened, clicked, unsubscribed and complained events for the domain.

list members
  • Get mailing list member
    Source

    One member with subscription status and variables.

  • List mailing list members
    Source

    Members of one mailing list, optionally only subscribed or unsubscribed.

  • Update mailing list member
    Destination
    Duplicate protected

    Updates a member's name, variables or address. Subscription changes only when subscribed is given.

  • Add or update mailing list member
    Destination
    Duplicate protected

    Adds a member or updates an existing one (upsert=yes). The subscribed value must be given explicitly.

mailing lists
  • Create mailing list
    Destination
    Duplicate protected

    Creates a mailing list with a unique list address.

  • Get mailing list
    Source

    One mailing list.

  • List mailing lists
    Source

    Mailing lists on the account with member counts.

  • Update mailing list
    Destination
    Duplicate protected

    Changes a list's name, description, access level, reply preference or address.

messages
  • Send email
    Destination
    Not retried automatically

    Sends one transactional email (up to 50 recipients) from the configured domain, with raw content or a stored template.

stats
  • Get domain statistics
    Source

    Totals for one event type over a period, by hour, day or month.

tags
  • List tags
    Source

    Message tags used on the domain.

template versions
  • Create template version
    Destination
    Duplicate protected

    Adds a new version to a template and optionally makes it active.

templates
  • Create template
    Destination
    Duplicate protected

    Creates a template, optionally with its first version content.

  • Get template
    Source

    One template with its active version content.

  • List templates
    Source

    Stored templates on the domain.

  • Update template description
    Destination
    Duplicate protected

    Changes a template's description.

unsubscribes
  • List unsubscribes
    Source

    Addresses that unsubscribed from the domain, all mail or specific tags (consent withdrawn).

Authentication

Private API key

Plans and access

All Mailgun plans. Free and trial accounts can only send to authorised recipients on the sandbox domain. Domain sending keys can only send; use a primary account API key (or a key with the needed role) for lists, templates, events and suppressions.

Test environment

Every account has a sandbox domain; o:testmode accepts messages without delivering them.

Rate limits

Account-level limits that depend on plan; HTTP 429 when exceeded. Events and logs are retained for at least 3 days (longer on paid plans).

Provider events

Domain webhooks for delivered, opened, clicked, unsubscribed, complained and failed events. Nexra event triggers are not yet available; flows run on demand or on a schedule.

Before you build a flow

  • Mailgun marks the Events and Stats APIs as deprecated in favour of the Logs and Metrics APIs; they still operate and are used here because their request and response fields are fully documented.
  • Messages are limited to 50 recipients in Nexra, and sending to a mailing list address is refused, so this operation cannot broadcast to audiences.
  • Sends have no idempotency key; uncertain sends are not repeated automatically.
  • Mailing list member upserts require an explicit subscribed value so Nexra never changes consent implicitly.
  • Suppression changes, bulk member uploads, attachments, template version edits and all deletes are not implemented.