Data Overview

BigMailer exposes ten entities through Coupler.io, covering everything from your brand structure and contact database to campaign performance and suppression management. Here's a breakdown of what each entity contains and how you can use the data.

Entities summary

Entity	Best used for
Brands	Understanding your account structure and brand-level organization
Contacts	Analyzing your subscriber base, segmentation, and custom attributes
Lists	Auditing list sizes, growth, and organization
Fields	Mapping your contact data model and available personalization variables
Message types	Distinguishing transactional from marketing sends in reporting
Segments	Reviewing dynamic audience definitions and segment criteria
Bulk campaigns	Tracking mass email campaign metadata and send history
Transactional campaigns	Monitoring trigger-based email setups and automation activity
Suppression lists	Managing deliverability by auditing opt-outs and bounces
Users	Reviewing team access and account user management

Contacts

Contact fields

Field	Description
Email	The subscriber's email address
First name	Contact's first name
Last name	Contact's last name
Status	Subscription status (active, unsubscribed, etc.)
Created at	Date the contact was added
Updated at	Date the contact record was last modified
Custom fields	Any additional fields defined in your Fields entity

Lists

List fields

Field	Description
List ID	Unique identifier for the list
Name	List name
Contact count	Number of contacts in the list
Created at	Date the list was created
Brand ID	The brand this list belongs to

Bulk campaigns

Campaign fields

Field	Description
Campaign ID	Unique identifier
Name	Campaign name
Subject	Email subject line
Status	Draft, scheduled, sent, etc.
Send date	When the campaign was or will be sent
List/segment	The audience targeted
Brand ID	The brand the campaign belongs to

Transactional campaigns

Transactional campaign fields

Field	Description
Campaign ID	Unique identifier
Name	Campaign name
Message type	The message type associated with this campaign
Status	Active or inactive
Brand ID	The brand this campaign belongs to

Suppression lists

Suppression fields

Field	Description
Email	The suppressed email address
Reason	Reason for suppression (bounce, unsubscribe, complaint)
Created at	Date the address was added to the suppression list
Brand ID	The brand this suppression applies to

Common data combinations

• Contacts + Lists — Join these two entities to see which lists each contact belongs to and analyze list composition

• Bulk campaigns + Brands — Join to enrich campaign data with brand-level context for cross-brand reporting

• Contacts + Suppression lists — Compare to identify overlap and keep your active contact counts accurate

• Bulk campaigns + Transactional campaigns — Append both into a single table for a unified send history view

Use cases by role

Email marketers

• Pull Bulk campaigns into Google Sheets or Looker Studio to track send history and campaign metadata across brands

• Use Segments data to audit your audience definitions and ensure targeting criteria are up to date

• Send Contacts data to ChatGPT or Claude to identify patterns in subscriber attributes and suggest segmentation strategies

Agency managers

Deliverability & ops

Platform-specific notes

• BigMailer organizes everything under Brands — most other entities include a Brand ID field you can use to filter or join data

• Custom fields defined in the Fields entity appear as columns in the Contacts entity, so expanding your field set will add columns to contact exports

• Suppression lists are brand-specific in BigMailer — make sure you're pulling the right brand's suppression data when auditing deliverability

• Transactional campaigns are tied to Message types — pull both entities if you need to understand the full context of your automated sends