Answers and moves to HTTPS
The site answered and sent plain HTTP visitors on to HTTPS.
Free HTTP lookup for any website
Check how a site answers a plain HTTP request: the status, any redirects and how long it takes.
- Free, with no signup
- Saves nothing it checks
What your result means
Stays on HTTP
The site answers over plain HTTP without moving to HTTPS, or returns a client error.
No answer
The site did not answer, took longer than 8 seconds, or returned a server error.
Questions about the HTTP lookup
What does an HTTP lookup check?
It asks for the page over plain HTTP, follows up to five redirects, and shows each status code, the time taken and a few headers.
Why check the website of a sending domain?
Recipients often open the domain in your From address before they reply. A domain that does not load looks unfinished.
Does Arcinbox keep the pages it asks for?
No. The check reads only the status and headers, never the page itself, and saves nothing.
Found a problem? We will check the rest.
Book a deliverability audit and we will look at every domain and mailbox you send from.