Adding newline to base64url string

Question

I have a program that is sending a base64url encoded string, but I read in places that the '\' character isn't supported by base64. My purpose is to send emails with the Gmail API in Go. The body part consists of the following:

"Name: \n\nThis is the body of the email\n\nSincerely,\nSenderName"

When I send emails through the Gmail API, I need to pass it a base64url string. I have the following function to handle that:

func encodeWeb64String(b []byte) string {

    s := base64.URLEncoding.EncodeToString(b)

    var i = len(s) - 1
    for s[i] == '=' {
        i--
    }

    return s[0 : i+1]
}

I have already added the header information to msg following this post, and have set the content type to text/html; charset=\"utf-8\". I then create the Gmail message using this:

gmsg := gmail.Message{
    Raw: encodeWeb64String([]byte(msg)),
}

When the email comes through, it looks like this:

Name: This is the body of the email Sincerely, SenderName

But I want each '\n' to put in actual newline. Thanks for any help, I am new with the Gmail API for Go.

Answer 1

I finally fixed it. I had to change the content type from text/html to text/plain, and now the newlines show properly on the email client