On Wed, Dec 27, 2017 at 1:52 PM, Dianne Skoll <d...@roaringpenguin.com> wrote: > On Wed, 27 Dec 2017 19:21:32 +0100 > Reindl Harald <h.rei...@thelounge.net> wrote: > >> > At most, I would do a HEAD on a URL and not a GET. HEAD is >> > probably safer and will usually tell you if the link is a redirect > >> no, for the web application it's typically transparent because the >> whole purpose of HEAD is that you get the whole headers as you would >> do with a GET request without the body > > That's true. I was mistaken about "safer".
I think also what many of the antispam vendors do is wrap each URL in their own redirect, which is then expanded and evaluated at click time.
