Mail bundling and processing performance improvements

app/Classes/File/Mail.php

@@ -44,9 +44,6 @@ final class Mail extends Send
 			case 'mtime':
 				return $this->youngest()->timestamp;
 
-			case 'size':
-				return strlen($this->f);
-
 			case 'type':
 				return ($this->ftype&0xff00)>>8;
 
@@ -99,6 +96,7 @@ final class Mail extends Send
 	public function open(string $compress=''): bool
 	{
 		$this->content = (string)$this->f;
+		$this->size = strlen($this->content);
 		return TRUE;
 	}