How do I setup my GMail account?

You need to edit your GMail settings and activate Forward a copy of incoming mail to your appnotification e-mail and keep GMail's copy in the inbox. You will receive notifications only if you are included in the To: or Cc: headers, except if you specifically ask for receiving all emails. You won't get notified for every mails from mailing lists neither. You can see your settings for more.

This forwarding way allows us not to have to store your Google credentials (login and password) to check for new mails. We care about your privacy, and we think you should too. We also do not store anything after we sent your notification.

However this is a very efficient way to have that feature, and your notification should come very fast, within seconds.

The notification will open Safari to the GMail website, we are not able to open the Mail.app application with the current Apple SDK, but we suggested Apple to change this. If you want to open another website than GMail (for hosted google domains, or if you have your own webmail), you can specify your webmail url in your settings.

Hint: if you send yourself an e-mail from GMail, GMail does not forward it. You need to try from another e-mail address.