In the time period of 92 days starting March 13, 2026, mailbox.amsterdam was checked for accessibility 1 times. All tests completed found mailbox.amsterdam to have downtime or accessibility issues as of June 13, 2026. As of June 13, 2026, there had been no instances of mailbox.amsterdam being unavailable during the checks conducted. Of the 1 error instances, the response with code 403, dated March 13, 2026, was the most recent. At 0.091 seconds, mailbox.amsterdam's March 13, 2026, response contrasted with its average of 0.091 seconds.