Amazon S3 static hosting with Namecheap DNS - How to correctly route non-www prefixed url

Question

I have been reading other posts to try to get down to the bottom of this issue... but I need some clarification.

I am able to get all of my domain requests to hit my Ama

Answer 1

So I used jremi's answer but as mentioned below had issues with email being delivered. After some time with NameCheap support, I have a working solution.

NameCheap setup

CNAME Record          www   domain.com.s3-website-us-west-1.amazonaws.com.
URL Redirect Record   @     www.domain.com  (unmasked)

S3 setup (only need 1 bucket)

[S3 Bucket] 
Bucket name: www.domain.com     <---- This must match your domain exactly
Static website hosting set to:
"Enable website hosting"

S3 bucket Policy

{
    "Version": "2012-10-17",
    "Statement": [
        {
            "Sid": "PublicReadGetObject",
            "Effect": "Allow",
            "Principal": "*",
            "Action": "s3:GetObject",
            "Resource": "arn:aws:s3:::www.domain.com/*"
        }
    ]
}

This has allowed both domain.com and www.domain.com to work and my NameCheap email works as well.