Introduction
Contacts are the people you send emails to in AutoSend. Each contact has a unique email address and associated data like name, location, or any other information you’ve added through fields.
Contacts can be organized using Lists or Segments for better targeting.
All Contacts
The All Contacts list shows every contact you’ve ever added to your account.
Contacts can come from:
- Manual additions
 - Imported via CSV
 - API integrations
 - Sign-ups or form submissions
 
You can filter and search contacts, and view detailed insights for each.
Contact Details
Clicking on any contact opens their Contact Details page, where you can view:
- Details: Basic information (email, name, etc.), Reserved and Custom Fields.
 - Lists & Segments: All the lists and segments the contact belongs to
 - Unsubscribes: The kind of emails a particular user has unsubscribed from.
 - Email Activity: The email history of a particular user.
 
Reserved Fields
Reserved fields are system-defined fields that AutoSend uses to store core contact information. You can’t rename or delete them.
| Field | Description | 
|---|---|
| The contact’s primary email address. This field is required and unique for each contact. | |
| firstName | The contact’s first name. Often used for personalizing emails (e.g., Hey {{firstName}}). | 
| first_name | The contact’s first name. Often used for personalizing emails (e.g., Hey {{firstName}}). | 
| lastName | The contact’s last name. | 
| last_name | The contact’s last name. | 
| mobile | The contact’s mobile phone number. | 
| unsubscribe | Boolean indicating if the contact has unsubscribed from all emails. | 
| unsubscribed | Boolean indicating if the contact has unsubscribed from all emails. | 
| unsubscribe_groups | Array of specific email groups/categories the contact has unsubscribed from. | 
| unsubscribe_preferences | Object containing detailed unsubscribe preferences for different email types. | 
| userId | Your internal user ID for tracking contacts across your systems. | 
| externalId | External identifier from third-party integrations or CRM systems. | 
| createdAt | Timestamp when the contact was first added to AutoSend. | 
| updatedAt | Timestamp when the contact was last modified. | 
| contactLists | Array of list IDs that this contact belongs to. | 
| address | The contact’s full address (single field). | 
| address_line_1 | First line of the contact’s address (street address). | 
| address_line_2 | Second line of the contact’s address (apartment, suite, etc.). | 
| city | The contact’s city. | 
| state | The contact’s state or province. | 
| zip | The contact’s postal or ZIP code. | 
| country | The contact’s country. | 
Custom Fields
Custom fields let you store additional information beyond the reserved ones — for example, “Company,” “Plan Type,” or “Signup Date.”
They can be text, number, or date fields
You can use these in both marketing campaigns and transactional emails to personalize your content using variables like {{custom_field_name}}.