Even if all three emails were properly delivered, that is not sufficient notice for a storage service. Why is there not also a reminder on the dashboard?
A financial service I use was recently purchased by another. The company has been aggressive in keeping me on the loop about what is upcoming. Maybe six months before the actual event a heads up. Again at two months. Then at one month. Then every week, along with countdowns to the deadline. "Are you ready? This is really happening. Here are relevant docs on how to ensure your transition goes smoothly."
Even the dashboard isn't really enough... if I'm running a one-off application or many, I may not log into every dashboard for every single thing regularly. A scream test would have been most appropriate, combined with a backup and at least 30 days retention for migration.
A financial service I use was recently purchased by another. The company has been aggressive in keeping me on the loop about what is upcoming. Maybe six months before the actual event a heads up. Again at two months. Then at one month. Then every week, along with countdowns to the deadline. "Are you ready? This is really happening. Here are relevant docs on how to ensure your transition goes smoothly."