The availability of postable.io has been tested 5 times between November 18, 2020, and the present, a span of 1 595 days. There were 5 instances of postable.io uptime that were recorded from the tests, including a code 200 result on January 27, 2021. As of April 2, 2025, there was no downtime experienced by postable.io during the inspection process. Based on the replies received as of April 2, 2025, it has been confirmed that there are no responses with error status. Postable.io's January 27, 2021, response time of 1.482 seconds differed from its 2.546 seconds average response time.