Email Studio Performance & Subscriber Experience Improvements

• Improved campaign email delivery performance for faster, more consistent sending.
• Enhanced background email processing to reduce the impact of campaign sending on website speed and responsiveness.
• Improved campaign queue handling so scheduled email batches are processed more efficiently.
• Optimised email connection handling to reduce unnecessary processing during larger campaigns.
• Reduced repeated database activity during campaign delivery to improve overall performance.
• Improved campaign scheduling behaviour to allow queued emails to progress more smoothly.
• Added additional safeguards around campaign processing to help maintain reliable website performance during email delivery.
• Improved the campaign start process so sending can continue independently without requiring the administration page to remain actively involved.
• Improved campaign status handling and progress monitoring within the administration area.
• Added a new unsubscribe confirmation banner for newsletter subscribers.
• Subscribers who successfully unsubscribe are now redirected to the newsletter page with a clear green confirmation message.
• Added a dismiss button to the unsubscribe confirmation banner, allowing visitors to close the message when they have read it.
• The unsubscribe confirmation is only displayed following a genuine unsubscribe action and will not repeatedly appear on page refresh.
• Previously used unsubscribe links will no longer repeatedly trigger the confirmation message.
• If a subscriber later joins the newsletter again, the confirmation state is reset so a future unsubscribe can display the notification normally.
• Improved subscriber status handling when users re-subscribe after previously unsubscribing.
• Added general reliability and code improvements across campaign sending and subscriber management.