Source value reference
You will learn
Learn about the source ($source) profile property to better understand how your subscribers signed up. Klaviyo automatically assigns a $source property for profiles added using certain methods. For example, subscribing a profile through Klaviyo’s API uses the API source (-9), unless the request supplies a custom source. Manually subscribing a profile uses Manually Initiated (-6).
Certain integrations and subscribe methods are tracked using a number, rather than a text description. The chart below outlines what these numbers mean.
Using special $source values
When creating a segment or flow filter based on $source, you may need to use these numbers to identify the sources you’d like to include.
To use a source in a segment, start creating a segment with this definition: Properties about someone > $source > equals. In the Enter a value field, select or enter the value stored in the profile’s $source property. If the value is a negative number, include the minus sign. Use the table below to identify the source associated with that code.

To check a specific profile’s source, open their profile and go to Details. Under Custom properties, locate $source and read its value. Use that value in your $source-based segment or flow filter. You don’t need to edit the property to check it.

Note that the value set for $source on a profile is overwritten when profiles take actions that set this field. For example, submitting a form would update the existing $source value on the profile to reflect the form submission.
The table identifies subscribe and unsubscribe sources, but $source does not show a profile’s current consent status. For example, unsubscribing from email does not overwrite $source on an existing profile. Check the profile’s channel consent status to see whether they’re subscribed.
$source value reference
$source Value | Profile Source |
-1 | Unknown (subscribe) |
-2 | Modal (subscribe) |
-3 | Flyout (subscribe) |
-4 | Embedded Form (subscribe) |
-5 | Subscribe Page (subscribe) |
-6 | Manually Initiated (subscribe) |
-7 | Twitter (subscribe) |
-8 | Integration (subscribe) |
-9 | API (subscribe) |
-10 | Copied from Another List (subscribe) |
-11 | Swapped Subscription (subscribe) |
-12 | Unknown (unsubscribe) |
-13 | Manually Initiated (unsubscribe) |
-14 | Unsubscribe Page (unsubscribe) |
-15 | Unknown Integration (unsubscribe) |
-16 | Swapped Subscription (unsubscribe) |
-17 | API (unsubscribe) |
-18 | Copied from Another List (unsubscribe) |
-19 | Spam Complaint (unsubscribe) |
-20 | Hard Bounce (unsubscribe) |
-21 | 3dcart (subscribe) |
-22 | BigCommerce (subscribe) |
-23 | Postmark (subscribe) |
-24 | Celery (subscribe) |
-25 | Constant Contact (subscribe) |
-26 | Zoho (subscribe) |
-27 | API (subscribe) |
-28 | ActBlue (subscribe) |
-29 | Help Scout (subscribe) |
-30 | Zendesk (subscribe) |
-31 | Olark (subscribe) |
-32 | ShopDirect (subscribe) |
-33 | Mailgun (subscribe) |
-34 | MadMimi (subscribe) |
-35 | Lightspeed (subscribe) |
-36 | Unbounce (subscribe) |
-37 | Janrain (subscribe) |
-38 | WooCommerce (subscribe) |
-39 | Magento 2 (subscribe) |
-40 | Mandrill (subscribe) |
-41 | Wufoo (subscribe) |
-42 | Sendgrid (subscribe) |
-43 | Mailchimp (subscribe) |
-44 | Commercev3 (subscribe) |
-45 | Amazon Web Services (subscribe) |
-46 | AfterShip (subscribe) |
-47 | Klaviyo (subscribe) |
-48 | Salesforce (subscribe) |
-49 | NeonCRM (subscribe) |
-50 | Shopify (subscribe) |
-51 | Volusion (subscribe) |
-52 | UserVoice (subscribe) |
-53 | Eventbrite (subscribe) |
-54 | Kickoff Labs (subscribe) |
-55 | Amazon Marketplace (subscribe) |
-56 | Magento 2 (subscribe) |
-57 | Bloomerang Fundraising (subscribe) |
-58 | StickyStreet (subscribe) |
-59 | Segment (subscribe) |
-60 | Chargebee (subscribe) |
-61 | Recurly (subscribe) |
-62 | Stripe (subscribe) |
-63 | Campaign Monitor (subscribe) |
-64 | Magento (subscribe) |
-65 | GoFundMe Pro (subscribe) |
-66 | Spree (subscribe) |
-67 | Desk.com (subscribe) |
-68 | Facebook Audiences (subscribe) |
-69 | DonorPerfect (subscribe) |
-70 | Donate.ly (subscribe) |
-71 | ExactTarget (subscribe) |
-72 | OpenCart (subscribe) |
-73 | Funraise (subscribe) |
-74 | 3dcart (unsubscribe) |
-75 | BigCommerce (unsubscribe) |
-76 | Postmark (unsubscribe) |
-77 | Celery (unsubscribe) |
-78 | Constant Contact (unsubscribe) |
-79 | Zoho (unsubscribe) |
-80 | API (unsubscribe) |
-81 | ActBlue (unsubscribe) |
-82 | Help Scout (unsubscribe) |
-83 | Zendesk (unsubscribe) |
-84 | Olark (unsubscribe) |
-85 | ShopDirect (unsubscribe) |
-86 | Mailgun (unsubscribe) |
-87 | MadMimi (unsubscribe) |
-88 | Lightspeed (unsubscribe) |
-89 | Unbounce (unsubscribe) |
-90 | Janrain (unsubscribe) |
-91 | WooCommerce (unsubscribe) |
-92 | Magento 2 (unsubscribe) |
-93 | Mandrill (unsubscribe) |
-94 | Wufoo (unsubscribe) |
-95 | Sendgrid (unsubscribe) |
-96 | Mailchimp (unsubscribe) |
-97 | Commercev3 (unsubscribe) |
-98 | Amazon Web Services (unsubscribe) |
-99 | AfterShip (unsubscribe) |
-100 | Klaviyo (unsubscribe) |
-101 | Salesforce (unsubscribe) |
-102 | NeonCRM (unsubscribe) |
-103 | Shopify (unsubscribe) |
-104 | Volusion (unsubscribe) |
-105 | UserVoice (unsubscribe) |
-106 | Eventbrite (unsubscribe) |
-107 | Kickoff Labs (unsubscribe) |
-108 | Amazon Marketplace (unsubscribe) |
-109 | Magento 2 (unsubscribe) |
-110 | Bloomerang Fundraising (unsubscribe) |
-111 | StickyStreet (unsubscribe) |
-112 | Segment (unsubscribe) |
-113 | Chargebee (unsubscribe) |
-114 | Recurly (unsubscribe) |
-115 | Stripe (unsubscribe) |
-116 | Campaign Monitor (unsubscribe) |
-117 | Magento (unsubscribe) |
-118 | GoFundMe Pro (unsubscribe) |
-119 | Spree (unsubscribe) |
-120 | Desk.com (unsubscribe) |
-121 | Facebook Audiences (unsubscribe) |
-122 | DonorPerfect (unsubscribe) |
-123 | Donate.ly (unsubscribe) |
-124 | ExactTarget (unsubscribe) |
-125 | OpenCart (unsubscribe) |
-126 | Funraise (unsubscribe) |
-127 | Facebook Lead Ad (subscribe) |
-128 | Typeform (subscribe) |
-129 | Suppressed by Flow (unsubscribe) |
-130 | Back in Stock (subscribe) |
-131 | Back in Stock (unsubscribe) |
-132 | mi9 (subscribe) |
-133 | mi9 (unsubscribe) |
-134 | Invalid Email (unsubscribe) |
-135 | Merged Profiles (unsubscribe) |
-136 | Transferred Memberships (subscribe) |
-137 | Transferred Memberships (unsubscribe) |
-138 | NetSuite (subscribe) |
-139 | Wix (subscribe) |
-140 | Square (subscribe) |
-141 | SFTP (subscribe) |
-142 | Square (unsubscribe) |
Additional resources
- How to analyze revenue by source
Learn how to analyze revenue by source to better understand and use this data in your account. Revenue is one of the most important metrics to measure the success of a marketing campaign.
- How to segment for form results
Learn how to create segments to see who submits your Klaviyo forms and how they responded. By creating and analyzing the right segments, you can glean information about who enters your account through Klaviyo forms. This information will show you which forms work best for your audience, and allow you to analyze customer behavior and properties over time.
- Message personalization reference
Learn how to use Klaviyo’s personalization variables, or tags, to customize the experience for your customers.