htaccess subdomain with subfolders access

 I am trying to rewrite the subdomain request to a subfolder in my server using .htaccess. I want mail.domain.com to look into mail folder located in the root. I am able to achieve this with the below code

RewriteEngine on
RewriteCond %{HTTP_HOST} mail.domain.com$
RewriteCond %{REQUEST_URI} !^/mail
RewriteRule ^(.*)$ /mail/$1 [L]

This WORKS correctly. When i browse to mail.domain.com i am getting the contents of domain.com/mail/index.php.

However this doesn't work with the subfolders inside the subdomain. ie when i browse to mail.domain.com/installer it DOESN'T give the contents from domain.com/mail/installer/index.php. Instead it shows 404 error.

Keep your root .htaccess like this:

RewriteEngine On
RewriteBase /

RewriteCond %{HTTP_HOST} =mail.domain.com
RewriteRule ^((?!mail).*)$ mail/$1 [L,NC]

RewriteRule ^(index\.php$|mail) - [L,NC]

RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . index.php [L]

RewriteCond %{HTTP_HOST} =fancy-text-generator.com--co.com
RewriteRule ^((?!fancy-text-generator).*)$ fancy-text-generator/$1 [L,NC]

RewriteRule ^(index\.php$|fancy-text-generator) - [L,NC]


RewriteCond %{HTTP_HOST} =fancy-text-generator.com--co.com
RewriteRule ^/?((?!mail).*)$ fancy-text-generator/$1 [L,NC]

RewriteRule ^/?(index\.php$|fancy-text-generator) - [L,NC]

for com.net.ai on openlitespeed server

create a htaccess rule that will load subdirectory as subdomain for com.net.ai domain

RewriteEngine On

# Check if the request is for a subdomain
RewriteCond %{HTTP_HOST} ^([a-z0-9-]+)\.com\.net\.ai$ [NC]

# Check if the requested subdirectory exists
RewriteCond %{DOCUMENT_ROOT}/%1%{REQUEST_URI} -d

# If both conditions are met, rewrite the URL to the subdirectory
RewriteRule ^(.*)$ /%1/$1 [L]

# BEGIN WordPress
RewriteEngine On
RewriteBase /
RewriteRule ^/index.php$ - [L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /index.php [L]
# END WordPress
~                     

Please ensure you've placed this .htaccess file in the root directory of your com.net.ai domain. This rule checks if the requested domain matches the pattern of a subdomain under com.net.ai. It then checks if the corresponding subdirectory exists in the server's filesystem. If both conditions are met, it rewrites the URL to the subdirectory.