In my site I have it so users can upload images of themselves. After I upload a new image, it still shows the old one until I hit refresh. Is there any way to update the cache so the new image is automatically shown and you don't have to hit refresh?
Second question. In my site I have a confirmation email system. When I send the email to some mail systems, it is automatically sent to their spam folder. What measures can I take to ensure my emails aren't seen as spam?
