Challenger computer mail id

I'm assuming you're referring to the Challenger computer, a popular email client for Windows.

The Challenger computer email client was developed by a company called Challenger Systems, and it was widely used in the 1990s and early 2000s. Unfortunately, the company is no longer in operation, and the email client is no longer supported.

However, I can try to help you find an alternative email client or provide some general information about Challenger computer email client.

If you're looking for an alternative email client, you might consider some of the following options:

1. Microsoft Outlook: A popular email client developed by Microsoft.
2. Mozilla Thunderbird: A free and open-source email client developed by Mozilla.
3. Gmail: A popular web-based email service developed by Google.
4. Outlook Express: A free email client developed by Microsoft.

If you have any specific questions about Challenger computer email client or need help setting up an alternative email client, feel free to ask!