Outbox mail means service

I think there may be a bit of confusion here!

"Outbox" and "outbox mail" are actually related to email, not a service.

In email, the "outbox" is a folder or area where emails that you have composed and are ready to send are stored temporarily before they are sent to their recipients. It's like a holding area where your emails wait to be dispatched.

When you send an email, it is moved from the outbox to the "sent items" folder, which is another folder where you can view emails that you have already sent.

So, "outbox mail" simply refers to the emails that are waiting to be sent from your outbox folder. It's not a service, but rather a feature of email clients and providers.

If you're looking for a service that helps you manage your email, there are many options available, such as email clients like Microsoft Outlook, Mozilla Thunderbird, or web-based email services like Gmail, Yahoo Mail, or Outlook.com. These services can help you organize your emails, filter spam, and more!