Sync guest phone numbers to Mailchimp via integration

Problem statement:

• The current Mailchimp integration only syncs email addresses, not phone numbers
• 99% of guests come from Airbnb and Booking.com, which don't reliably share emails
• This makes the integration largely ineffective for building a usable contact list

Current workaround:

• Exporting guest data (including phone numbers) as CSV from Hospitable Metrics
• Manually importing phone numbers into Mailchimp

Impact:

• Time-consuming manual work to maintain contact lists
• Inability to leverage phone numbers for marketing campaigns
• Limited effectiveness of the Mailchimp integration for this use case

Proposed solution:

• Extend the Mailchimp integration to sync guest phone numbers in addition to email addresses

Unlock:

• Automatic syncing of both emails and phone numbers to Mailchimp
• Ability to build and use a reliable contact list for marketing campaigns
• Full utilization of the Mailchimp integration for this business