# Add Subscribers
### Add Manually
To manually add a subscriber or referral to your campaign:
1. Go to your campaign dashboard > Subscribers
2. Click the **Add Subscriber** button in the top right corner
3. In the modal, enter the subscriber’s information, such as email address and name
4. Click **Add Subscriber**
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**Note:** Click **Customize Fields** in the modal to control which fields are visible when adding a subscriber.
{% endhint %}
To add a referral, make sure to enter the advocate’s unique identifier or referral code in the Advocate field. (For example, if you're adding **, who was referred by **, enter ** in the Advocate field.)
### Upload CSV File
To import your existing users/subscribers in ReferralHero, go to your Campaign Builder > Add Subscribers > Upload CSV File.
On that page, you can upload a CSV file containing the data of your existing users.
#### File Formatting
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Your CSV file must have headers, and they must be **lowercase**. The only required header is **email.** We highly recommend using our [example file](https://app.referralhero.com/maitre_import_example.csv) as a starting point, and please delete all blank rows/columns in your file before uploading.
{% endhint %}
Here are all the fields that you can use with your import:
| column | description |
| ----------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| **email** | (Required if campaign's primary identifier) Subscriber's email |
| **domain** |
Default referral link (e.g: ). \* If left blank, the default referral link set in the GOAL campaign builder will be used
Subscriber's phone number (eg: +141234xxx34) Country code must be present.
|
| **extra field** | Subscriber's extra field (e.g: age) |
| **extra field 2** | Subscriber's extra field 2 (eg: country) |
| **date** | Subscriber's sign up date (DD/MM/YYYY or DD/MM/YYYY HH:MM) |
| **referrals** | Subscriber's number of referrals. Useful if you're importing people who have already accumulated referrals from a previous referral program |
| **referrer** | Use this column to indicate the referrer (or advocate) of a subscriber. The value is the email address of the referrer |
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**Good to know**
* All imported subscribers will have *Imported from csv* as their source.
* You can choose to send a Welcome email to imported subscribers by enabling it in the **Automations** section. The Welcome email will only be sent if one has been created and is currently active.
* If you’ve enabled integration with your CRM, imported contacts will also be synced to your connected CRM list. If a contact already exists in your CRM list, their name and custom fields will be updated.
* You can navigate to another page while the import is in progress. The **Upload** button will become active again once the import is complete.
{% endhint %}
### Import via Integration
You can also import contacts, users, or customers directly from your connected integrations.
To do this, go to your Campaign Builder > Add Subscribers > Import via Integration, and select from the available integration sources.
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If your **Welcome Email** automation is active, imported subscribers will receive this email—just like those added manually or via CSV upload.
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