According to an official announcement from Google, the recent issues involving a number of Gmail users who lost all of their old emails has been resolved. They claimed it was fixed a few days after it came to light, but it hadn’t been completely fixed, as a number of Gmail users were still without access to their old emails.
Now however, Google’s latest statement says that all of these issues should be fixed, but if anybody still has problems with Gmail, they should contact Google. It’s a good lesson to learn about not completely relying on cloud computing. Offline backups of your email might be a good idea.