AWS account creation was stucked and email address reserved.

I understand you're facing an issue with creating a new AWS account because your email address is already reserved. This is a common problem when account creation is interrupted. Unfortunately, there isn't a direct way to "release" an email address that has been associated with an AWS account, even if the account creation process wasn't completed.

However, there are a few options you can try:

1. Wait for some time (usually 24-48 hours) and attempt to create the account again. Sometimes, the system automatically releases email addresses that weren't fully associated with completed accounts.

2. If you really need to use the same email address, you can try a simple workaround. Many email providers allow you to use a "+" symbol in your email address. For example, if your email is "example@email.com", you could try using "example+aws@email.com". AWS will treat this as a different email address, but emails sent to it will still arrive in your inbox.

3. If the above options don't work, you may need to use a different email address to create your AWS account.

If you continue to experience issues or if it's crucial for you to use the specific email address, it's recommended to contact AWS Support. They may be able to assist you further or provide additional options based on your specific situation.

Remember, the email address you use becomes the username for the root user of the account, so it's important to use an email address you have long-term access to.
Sources
Resolve the error “EMAIL_ALREADY_EXISTS” when creating an account | AWS re:Post
Troubleshooting issues with AWS account creation - AWS Account Management
Troubleshoot issues with the root user - AWS Identity and Access Management