Resolve woocommerce hook woocommerce_email_footer function causing recursion - recursion

Question

I'm using Woocommerce hook woocommerce_email_footer() and inside my function, I need to call $email->get_content() which causes recursion and PHP memory error and WordPress exits with system error
Tried to remove the hook before calling the $email->get_content() and adding the hook back right after this call. However, this may not be a foolproof solution since some other session which hits exactly at the time when my function has removed the action might totally miss the hook custom action
I've written the following code in functions.php of my theme to capture the mail contents (mail body) into a local file just before it is being sent whenever a new order is received
//
// Capture the contents of the Emails sent and save into local files
// These Local files are used for further messaging through different channels
//
function Save_Email_Contents_into_Local_File ( $email ) {
if ( $email->id == 'customer_processing_order' ) {
// Remove the action temporarily so as not to cause Recursion while we refer to $email functions
remove_action( 'woocommerce_email_footer', 'Save_Email_Contents_into_Local_File', 20, 1 );
$TargetFilename = '/home/users/....../Sent_Mail.html' ;
$html_message = $email->get_content();
$formatted_message = $email->style_inline($html_message);
file_put_contents($TargetFilename, $formatted_message);
}
// Put the action back to original state
add_action( 'woocommerce_email_footer', 'Save_Email_Contents_into_Local_File', 20, 1 );
};
// add the action
add_action( 'woocommerce_email_footer', 'Save_Email_Contents_into_Local_File', 20, 1 );
Please note in the above function, I'm referring the $email->get_content() public function.
If I do not do the remove_action( 'woocommerce_email_footer', 'Save_Email_Contents_into_Local_File', 20, 1 ); this function becomes recursive and fails with a PHP memory error.
Although this is a workable solution, Removing the action can potentially cause another instance of the customer_processing_order from another user to miss the action and not come to this function if that session hits exactly at the time when this current session has removed the action and before adding the action again.
I'm sure I'm not doing it right! Is there any better way to accomplish what I need - basically I need the exact formatted mail content to be stored in a local file whenever the order is received. Similarly, I will need local file stored for Order completion and order hold, etc. but at later point of time.
Want to achieve storing formatted email into a local file a) without causing recursion / PHP memory errors b) without having to miss some instances of the execution missing the custom code attached to the hook.