Social Icons for WooCoomerce Emails

Yes. Use the filter hook siwce_social_links.

Example:

// add this to your functions.php
add_filter( 'siwce_social_links', '__add_vk_wc_emails' );
function __add_vk_wc_emails( $icons ) {
    $icons['vk'] = 'VK';
    return $icons;
}

Use the filter hook siwce_icon_image_uri.

Example:

// add this to your functions.php
add_filter( 'siwce_icon_image_uri', 'yourprefix_change_facebook_icon', 10, 2 );
function yourprefix_change_facebook_icon( $uri, $icon_id ) {
    if ( $icon_id == 'facebook' ) {
        $uri = get_stylesheet_directory_uri() . '/path/to/your/facebook_icon.png';
    }
    return $uri;
}