It’s been a long time coming, but the day is finally here. At the end of tonight, the servers that made your Sidekick devices so great — that insanely addictive push email, one of the best AIM experiences, one of the first app stores, and more — will be shut down for good. Since the Danger Sidekick devices were tied directly to the cloud, the devices had limited memory. What this means is that since there will no longer be data on the server, the data on your Sidekick will erase if your phone loses it’s charge. T-Mobile has recommended that Sidekick users go into T-Mobile locations to help get their data backed up, but if you’ve missed the boat, you can hit up your online T-Mobile account at the link below to access and export your data for free.

Note: the T-Mobile Sidekick 4G, the company’s latest Sidekick (Android, not Danger) is not at risk of losing data or service.