Why choose this one...
• More features and options!
• More support! - and i'll add your suggestions.
• More updates! - just watch the version changes in the logs below.
• The fastest and easiest way to manage multiple email accounts
• Safer - has less permissions than the rest
• Highest rated - It's one of the highest rated Chrome extensions and continues to be in the top 10, awesome, thanks for the ratings everyone.
• See the people emailing you just like in the Gmail chat notification. Added an option to show their contact photos or your assigned photos for them.
• Voice notification: If you get an email while your busy watching a movie or cooking dinner this extension can optionally read it out load, mentioning the sender, the email subject or even the message ie. "Email from Jason" or even "Jason says, dinner at my place". It's great for the visually impaired.
• Option to monitor any Gmail or custom labels or even all mail
• Option to run in background when Google Chrome is closed and still get new email alerts
• Zoom in and out of emails which have large images
• Popup mail preview window to read, archive, mark as read or delete emails without leaving the current tab (or option to go directly to your Gmail tab)
• Can also be used as a widget for the extension "Awesome New Tab Page" (ANTP) which supports multiple accounts
• Desktop sound or voice notifications when new mail arrives (or add your own sounds)
• Support for multiple Gmail and Google Apps accounts
• Option to open "Mail to" links in your Gmail instead of your regular mail client
• This Gmail notifier has more than 10 different icon sets, choose your favorite!
• You change the generated voice by adding TTS (text to speech) voice extensions
• The fast way to inbox zero. Yes that's a thing.
Change is available at the bottom of the english description here