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OpenBack joined Twitter on April 19, 2022
We are excited to announce that OpenBack has joined Twitter! We are so grateful to all of our customers and supporters along the way as we've worked to make push notifications truly user first. With Twitter's positive impact on the world, we are very excited to become part of the Twitter team and continuing building the future of notifications there. OpenBack shut down on April 19, 2022.
For now, David, Christian, Nic & Team.