Checked against the vendor's own page, and dated.

Claim the Justworks listing

For someone who works at Justworks. A verified owner can suggest corrections to this file. Suggestions are reviewed like any other correction.

What claiming does not do. It does not let anyone edit this page directly, change its position, or remove a figure. Every suggestion goes into the same queue a reader's correction goes into.

It has to be an address at justworks.com. A free mail account cannot show that you work there, so those are refused.