Example: 
- Newsletter Subscribers
- VIP Customers
- Event Attendees
- Product Updates
Mailing lists screenshot

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Contact Statuses

Contacts within lists can have different statuses that determine their engagement eligibility:
StatusEmail DeliveryDescription
Active✅ Can receive emailsConfirmed subscribers eligible for broadcasts
Pending❌ Cannot receive emailsWaiting for double opt-in confirmation
Unsubscribed❌ Cannot receive emailsOpted out of receiving communications
Bounced❌ Cannot receive emailsEmail address is invalid or unreachable
Complained❌ Cannot receive emailsMarked emails as spam
Important: Only contacts with “active” status can receive emails from broadcast campaigns.

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List Visibility

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Public Lists

  • Notification Center: ✅ Appear in the notification center
  • Subscriber Access: Users can see and subscribe to these lists through your notification center
  • Use Case: Ideal for newsletters, announcements, and general communications

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Private Lists

  • Notification Center: ❌ Do not appear in the notification center
  • Subscriber Access: Only accessible through direct management or API
  • Use Case: Perfect for internal communications, VIP segments, transactional lists, or one-time broadcasts

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Double Opt-In Configuration

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Enabling Double Opt-In

When you activate double opt-in for a list:
  • Imported Contacts: Contacts added via CSV import or API will always be “active” (they bypass double opt-in)
  • Anonymous Subscribers: Users subscribing via forms (like a newsletter signup on your website) will be “pending”
  • Confirmation Required: Pending contacts must click a confirmation link in their email to become “active”
  • Compliance: Helps ensure GDPR compliance and reduces spam complaints
Example: A visitor fills out a newsletter form on your website → they receive a confirmation email → they click the link (which renders the notification center) → status changes from “pending” to “active”

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Welcome Template (Optional)

  • Purpose: Automatically sent to contacts when they become “active”
  • Timing: Triggered after successful subscription or double opt-in confirmation
  • Content: Welcome message, onboarding information, or subscription confirmation

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Unsubscribe Template (Optional)

  • Purpose: Automatically sent when contacts unsubscribe from the list
  • Timing: Triggered immediately when a contact’s status changes to “unsubscribed”
  • Content: Confirmation of unsubscription, feedback request, or alternative communication options

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Best Practices

  1. Status Management: Regularly review contact statuses to maintain list health
  2. Double Opt-In: Enable for compliance and to ensure engaged subscribers
  3. Template Setup: Configure welcome and unsubscribe templates for better user experience
  4. List Segmentation: Use multiple lists to target specific audience segments effectively