Feature Request: Add option to disable YouTube subscriber notifications

[karinagiron99]

Feature Request

Add an option to control YouTube's notifySubscribers parameter when posting videos through Mixpost.

Problem

When posting videos to YouTube through Mixpost, subscribers always receive notifications because YouTube's API defaults notifySubscribers to true. There's currently no way to disable these notifications in Mixpost.

This can be problematic when:

• Posting multiple videos in a short timeframe (subscribers get overwhelmed)
• Batch uploading content that doesn't require immediate subscriber attention
• Scheduling back-to-back posts on consecutive days

Proposed Solution

Add a notify_subscribers option to YouTube post options that maps to the YouTube API's notifySubscribers parameter.

YouTube API Reference: The notifySubscribers parameter is documented in YouTube Videos: insert API:

notifySubscribers (boolean) - The notifySubscribers parameter indicates whether YouTube should send a notification about the new video to users who subscribe to the video's channel. The default value is true.

Expected Behavior

• Add a toggle/checkbox in the YouTube post options UI: "Notify subscribers"
• Default to true (current behavior, matching YouTube's default)
• When set to false, pass notifySubscribers=false to YouTube's API

Additional Context

This would give users more control over their YouTube publishing workflow and help avoid overwhelming subscribers when posting frequently.