How can you customize Slack notifications?

Customizing Slack notifications is primarily done through the "Notification settings" found within the preferences. This section provides users with comprehensive control over their notification experience, including the ability to adjust how and when they receive alerts for messages, mentions, and other activities. Users can set preferences for channels, direct messages, and even customize the sound and appearance of notifications, ensuring that they only receive the alerts that matter most to them.

The other options do not provide the necessary flexibility or access for comprehensive customization. For instance, solely changing settings in the phone app limits the user's ability to manage notifications elsewhere, while emailing Slack support is not a practical or valid method for personal notification adjustments. Additionally, while keyboard shortcuts may enhance navigation and efficiency within Slack, they do not relate directly to the customization of notifications. Thus, utilizing the preferences in "Notification settings" is the correct approach for achieving tailored notification management in Slack.