> ## Documentation Index
> Fetch the complete documentation index at: https://docs.mailofly.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Introduction

> Overview of managing contacts, subscriber lists, custom attributes, and segments.

# Audience Introduction

The **Contacts** system in Mailofly is your central database for subscribers, customer profiles, custom attributes, and dynamic segments.

***

## Core Primitives

```mermaid theme={null}
flowchart TD
    ContactsHub[Contacts Hub]
    ContactsHub --> Contacts[Contacts]
    ContactsHub --> Segments[Segments]
    ContactsHub --> Suppressions[Suppression List]

    Contacts --> Props[Custom Properties\ne.g. plan, company, signup_date]
    Segments --> Rules[Dynamic Filters\ne.g. plan == 'pro' AND status == 'active']
```

1. **Contacts**: Individual email recipients with first/last names, subscription status, and arbitrary custom key-value properties.
2. **Segments**: Dynamic or static cohorts of contacts filtered by specific criteria for targeted campaigns.
3. **Suppressions**: Unsubscribes, hard bounces, and spam complaints kept separated to protect deliverability.

***

## Next Steps

* [Managing Contacts](contacts.md)
* [Custom Properties & Metadata](properties.md)
* [Creating & Using Segments](segments.md)
* [Importing via CSV & Google Sheets](importing.md)
* [Unsubscribes & Compliance](unsubscribes.md)


## Related topics

- [Introduction](/introduction.md)