Subscription management for newsletters and updates

**Purpose**

1.1. Automatically manage opt-ins, opt-outs, and segmented lists for newsletters/updates related to acrobatic diving events, schedules, facility changes, promotions, emergency alerts, and community engagement efforts.
1.2. Ensure compliance with consent regulations, maintain up-to-date contact records, personalize engagement, and streamline delivery of relevant content to diverse aquatic audience segments (athletes, coaches, parents, spectators).

**Trigger Conditions**

2.1. Web form submissions for newsletter signup or update preferences.
2.2. Manual entry by staff at event registration kiosks or during phone inquiries.
2.3. Confirmation of participant registration for an event, class, or workshop.
2.4. Receipt of opt-out/unsubscribe requests via email, SMS, or website link.
2.5. Periodic re-consent campaigns or regulatory updates.
2.6. Automated list imports from partner organizations or related aquatic activities.

**Platform Variants**

3.1. **Mailchimp**
• Feature: List Management API – configure POST/PUT /lists/{list_id}/members for subscription updates.
3.2. **Constant Contact**
• Feature: Contacts API – use POST /contacts for new opt-ins, DELETE for opt-outs.
3.3. **ActiveCampaign**
• Feature: Subscribe/Unsubscribe Contact endpoint – set up automation with triggers on /api/3/contacts.
3.4. **SendGrid**
• Feature: Marketing Campaigns Contacts API – PATCH /marketing/contacts to add/remove recipients.
3.5. **Mailjet**
• Feature: Contact Management API – use /contact and /listrecipient endpoints to update lists.
3.6. **Klaviyo**
• Feature: Subscribe Profiles API – POST /api/v2/list/{list_id}/members to modify mailing list.
3.7. **HubSpot**
• Feature: Email Subscription API – PATCH /subscriptions/v3/status/email to set preferences.
3.8. **Salesforce Marketing Cloud**
• Feature: REST API DataExtensionRow – POST/DELETE to manage subscriber status.
3.9. **Brevo (ex-Sendinblue)**
• Feature: Contacts API – POST /contacts, PUT/DELETE for modifying or removing entries.
3.10. **AWeber**
• Feature: Subscriber Management API – add/remove with /accounts/{accountId}/lists/{listId}/subscribers.
3.11. **ConvertKit**
• Feature: Subscribe/Unsubscribe endpoints – POST /subscribe, POST /unsubscribe API functions.
3.12. **Moosend**
• Feature: Subscribers API – add via POST /subscribers/{mailingListId}/subscribe.
3.13. **Emma**
• Feature: Members API – use /groups/{group_id}/members endpoints for subscription flow.
3.14. **Campaign Monitor**
• Feature: Subscribers API – POST/DELETE /subscribers/{listid}.
3.15. **Benchmark Email**
• Feature: Contact Lists API – use /contacts/add and /contacts/delete for real-time changes.
3.16. **Twilio SendGrid (Email only)**
• Feature: API v3 Marketing Campaigns Lists – PATCH /lists/{list_id}/contacts.
3.17. **Zoho Campaigns**
• Feature: Contact Management API – POST /contacts to import, PUT for updates, DELETE for removals.
3.18. **GetResponse**
• Feature: Contacts API – POST /contacts to add, DELETE for unsubscribes.
3.19. **Elastic Email**
• Feature: Contacts API – PUT/DELETE /contacts for data sync operations.
3.20. **Mailgun**
• Feature: Mailing List API – POST /lists/{address}/members to add, DELETE to remove.
3.21. **Infusionsoft (Keap)**
• Feature: REST API – POST /contacts for new subs, PATCH to update, POST /emails/unsubscribe.
3.22. **Intercom (for user updates)**
• Feature: Contacts API – PUT /contacts for communication preferences.
3.23. **Pabbly Email Marketing**
• Feature: Subscribers API – POST /api/subscribers/add, /delete for maintenance.

**Benefits**

4.1. Eliminates manual list work, reducing errors and delays.
4.2. Ensures audiences receive only relevant aquatic content, fostering higher engagement.
4.3. Maintains regulatory compliance (e.g., GDPR, CAN-SPAM, CASL) automatically.
4.4. Supports granular targeting and segmentation for events, age groups, skill levels.
4.5. Allows emergency notifications or last-minute updates with accuracy and speed.
4.6. Builds participant loyalty through tailored, timely communication at every engagement point.