What happens when users become unreachable on a channel as defined by Unreachable Channels (MCE)?

When users become unreachable on a channel as defined by Unreachable Channels (MCE), they essentially fall out, meaning that they will not receive messages sent through that specific channel. This concept is crucial for maintaining effective communication and ensuring that messages are delivered to users via channels that are currently viable.

By identifying users as unreachable, the system helps marketers focus their efforts on users who can actively engage with messages, improving overall communication effectiveness and user experience. It also helps in managing channel health, allowing marketers to reassess their strategy or attempt to reach those users through alternative means or channels if appropriate.

The other options suggest behaviors that don’t align with the principle of managing unreachable users effectively. For instance, sending messages periodically to unreachable users could lead to frustration, while redirecting a user to another channel might not address the underlying issue of unreachability in the first channel. Keeping the channel active for a grace period without addressing the communication issue would not serve any beneficial purpose for either the marketer or the user.