Webhook events

When you configure a webhook URL, Ecomail sends HTTP POST requests with JSON payloads for each email event in real time.

Delivery

Each batch is sent as a POST request with Content-Type: application/json. Ecomail retries delivery for up to 8 hours if your endpoint does not respond with a 2xx status code. Each request has a 10-second timeout. Each batch includes the header X-MessageSystems-Batch-ID which can be used for deduplication.

Payload structure

Every webhook payload is an array of event objects wrapped in the following structure:

[
  {
    "msys": {
      "message_event": {
        "type": "delivery",
        "timestamp": "1716300000",
        ...
      }
    }
  }
]

Ecomail metadata

Every email sent through Ecomail includes the following custom metadata in the rcpt_meta field:

Field	Type	Description
`campaign_id`	string	ID of the campaign this email belongs to (bulk campaigns only).
`pipeline_id`	string	ID of the automation pipeline (automation emails only).
`pipeline_action_id`	string	ID of the specific action within the automation pipeline.
`subaccount`	string	Your Ecomail account name.

Example rcpt_meta in a payload:

{
  "msys": {
    "message_event": {
      "type": "delivery",
      "rcpt_meta": {
        "campaign_id": "123",
        "pipeline_id": "45",
        "pipeline_action_id": "67",
        "subaccount": "my-account"
      },
      ...
    }
  }
}

Event types

Delivery

Sent when a message is successfully delivered to the recipient’s mail server.

Field	Type	Description
`type`	string	`delivery`
`timestamp`	string	Unix timestamp of the event.
`event_id`	string	Unique event identifier.
`message_id`	string	Unique message identifier.
`rcpt_to`	string	Recipient email address.
`friendly_from`	string	Friendly from address.
`subject`	string	Email subject line.
`sending_ip`	string	IP address used for sending.
`sending_domain`	string	Sender domain.
`recipient_domain`	string	Recipient domain portion.
`msg_size`	string	Message size in bytes.
`rcpt_meta`	object	Custom metadata (see above).
`rcpt_tags`	array	Tags applied to the recipient.
`delv_method`	string	Delivery protocol (e.g. `esmtp`).
`campaign_id`	string	Campaign identifier.
`template_id`	string	Template identifier.
`transmission_id`	string	Transmission identifier.
`customer_id`	string	Customer identifier.

Bounce

Sent when a message is permanently rejected by the remote mail server.

Field	Type	Description
`type`	string	`bounce`
`timestamp`	string	Unix timestamp.
`event_id`	string	Unique event identifier.
`message_id`	string	Unique message identifier.
`rcpt_to`	string	Recipient email address.
`bounce_class`	string	Bounce classification code.
`error_code`	string	Remote server error code.
`raw_reason`	string	Exact response from the remote server.
`reason`	string	Canonicalized bounce reason.
`num_retries`	string	Number of delivery attempts before bounce.
`rcpt_meta`	object	Custom metadata.
`campaign_id`	string	Campaign identifier.
`template_id`	string	Template identifier.
`transmission_id`	string	Transmission identifier.

Spam complaint

Sent when a recipient marks the email as spam.

Field	Type	Description
`type`	string	`spam_complaint`
`timestamp`	string	Unix timestamp.
`event_id`	string	Unique event identifier.
`message_id`	string	Unique message identifier.
`rcpt_to`	string	Recipient email address.
`friendly_from`	string	Friendly from address.
`subject`	string	Email subject line.
`rcpt_meta`	object	Custom metadata.
`campaign_id`	string	Campaign identifier.
`template_id`	string	Template identifier.
`transmission_id`	string	Transmission identifier.

Open

Sent when a recipient opens an email (tracked via pixel).

Field	Type	Description
`type`	string	`open`
`timestamp`	string	Unix timestamp.
`event_id`	string	Unique event identifier.
`message_id`	string	Unique message identifier.
`rcpt_to`	string	Recipient email address.
`geo_ip`	object	Geographic info: `country`, `region`, `city`, `latitude`, `longitude`.
`ip_address`	string	IP address of the opener.
`user_agent`	string	Browser/client user agent string.
`rcpt_meta`	object	Custom metadata.
`campaign_id`	string	Campaign identifier.
`template_id`	string	Template identifier.
`transmission_id`	string	Transmission identifier.

Initial open

Sent only for the first open of a message (subsequent opens fire the open event). Fields are identical to the Open event with type set to initial_open.

Click

Sent when a recipient clicks a tracked link in the email.

Field	Type	Description
`type`	string	`click`
`timestamp`	string	Unix timestamp.
`event_id`	string	Unique event identifier.
`message_id`	string	Unique message identifier.
`rcpt_to`	string	Recipient email address.
`target_link_url`	string	The URL that was clicked.
`target_link_name`	string	Link identifier/name.
`geo_ip`	object	Geographic info: `country`, `region`, `city`, `latitude`, `longitude`.
`ip_address`	string	IP address of the clicker.
`user_agent`	string	Browser/client user agent string.
`rcpt_meta`	object	Custom metadata.
`campaign_id`	string	Campaign identifier.
`template_id`	string	Template identifier.
`transmission_id`	string	Transmission identifier.

Injection

Sent when a message is received by Ecomail for delivery.

Field	Type	Description
`type`	string	`injection`
`timestamp`	string	Unix timestamp.
`event_id`	string	Unique event identifier.
`message_id`	string	Unique message identifier.
`rcpt_to`	string	Recipient email address.
`msg_from`	string	Envelope sender address.
`msg_size`	string	Message size in bytes.
`rcpt_meta`	object	Custom metadata.
`campaign_id`	string	Campaign identifier.
`template_id`	string	Template identifier.
`transmission_id`	string	Transmission identifier.

Delay

Sent when a message delivery is temporarily delayed.

Field	Type	Description
`type`	string	`delay`
`timestamp`	string	Unix timestamp.
`event_id`	string	Unique event identifier.
`message_id`	string	Unique message identifier.
`rcpt_to`	string	Recipient email address.
`error_code`	string	Remote server error code.
`raw_reason`	string	Exact response from the remote server.
`reason`	string	Canonicalized delay reason.
`num_retries`	string	Number of delivery attempts so far.
`queue_time`	string	Time spent in queue (ms).
`rcpt_meta`	object	Custom metadata.
`campaign_id`	string	Campaign identifier.
`template_id`	string	Template identifier.
`transmission_id`	string	Transmission identifier.

Out of band bounce

Sent when an asynchronous bounce occurs after initial acceptance.

Field	Type	Description
`type`	string	`out_of_band`
`timestamp`	string	Unix timestamp.
`event_id`	string	Unique event identifier.
`message_id`	string	Unique message identifier.
`rcpt_to`	string	Recipient email address.
`bounce_class`	string	Bounce classification code.
`error_code`	string	Remote server error code.
`raw_reason`	string	Exact response from the remote server.
`reason`	string	Canonicalized bounce reason.
`rcpt_meta`	object	Custom metadata.
`campaign_id`	string	Campaign identifier.

Policy rejection

Sent when a message is rejected due to policy rules.

Field	Type	Description
`type`	string	`policy_rejection`
`timestamp`	string	Unix timestamp.
`event_id`	string	Unique event identifier.
`message_id`	string	Unique message identifier.
`rcpt_to`	string	Recipient email address.
`error_code`	string	Error code.
`reason`	string	Rejection reason.
`rcpt_meta`	object	Custom metadata.
`campaign_id`	string	Campaign identifier.

List unsubscribe

Sent when a recipient unsubscribes via the List-Unsubscribe email header.

Field	Type	Description
`type`	string	`list_unsubscribe`
`timestamp`	string	Unix timestamp.
`event_id`	string	Unique event identifier.
`message_id`	string	Unique message identifier.
`rcpt_to`	string	Recipient email address.
`rcpt_meta`	object	Custom metadata.
`campaign_id`	string	Campaign identifier.
`template_id`	string	Template identifier.
`transmission_id`	string	Transmission identifier.

Link unsubscribe

Sent when a recipient unsubscribes by clicking an unsubscribe link in the email body.

Field	Type	Description
`type`	string	`link_unsubscribe`
`timestamp`	string	Unix timestamp.
`event_id`	string	Unique event identifier.
`message_id`	string	Unique message identifier.
`rcpt_to`	string	Recipient email address.
`rcpt_meta`	object	Custom metadata.
`campaign_id`	string	Campaign identifier.
`template_id`	string	Template identifier.
`transmission_id`	string	Transmission identifier.

Generation failure

Sent when email generation (template rendering) fails.

Field	Type	Description
`type`	string	`generation_failure`
`timestamp`	string	Unix timestamp.
`event_id`	string	Unique event identifier.
`rcpt_to`	string	Recipient email address.
`error_code`	string	Error code.
`reason`	string	Failure reason.
`rcpt_meta`	object	Custom metadata.
`template_id`	string	Template identifier.
`transmission_id`	string	Transmission identifier.

Generation rejection

Sent when email generation is rejected due to policy.

Field	Type	Description
`type`	string	`generation_rejection`
`timestamp`	string	Unix timestamp.
`event_id`	string	Unique event identifier.
`rcpt_to`	string	Recipient email address.
`error_code`	string	Error code.
`reason`	string	Rejection reason.
`rcpt_meta`	object	Custom metadata.
`template_id`	string	Template identifier.
`transmission_id`	string	Transmission identifier.

Getting started

Automations

Campaigns

Discount coupons

Domains

Feeds

Lists

Recommenders

Search

Subscribers

Templates

Tracker events

Transactional emails

Transactions

Webhooks

Delivery

Payload structure

Ecomail metadata

Event types

Delivery

Bounce

Spam complaint

Open

Initial open

Click

Injection

Delay

Out of band bounce

Policy rejection

List unsubscribe

Link unsubscribe

Generation failure

Generation rejection

Getting started

Automations

Campaigns

Discount coupons

Domains

Feeds

Lists

Recommenders

Search

Subscribers

Templates

Tracker events

Transactional emails

Transactions

Webhooks

​Delivery

​Payload structure

​Ecomail metadata

​Event types

​Delivery

​Bounce

​Spam complaint

​Open

​Initial open

​Click

​Injection

​Delay

​Out of band bounce

​Policy rejection

​List unsubscribe

​Link unsubscribe

​Generation failure

​Generation rejection

Delivery

Payload structure

Ecomail metadata

Event types

Delivery

Bounce

Spam complaint

Open

Initial open

Click

Injection

Delay

Out of band bounce

Policy rejection

List unsubscribe

Link unsubscribe

Generation failure

Generation rejection