When you have an account and make an email address private, message storage kicks in.
Message storage comes into play in two ways. It governs:
- the number of messages allowed across your owned email addresses
- the number of starred messages
When are messages recycled?
The oldest, unstarred messages are removed.
If your storage limit is 100 messages, and you star 25 messages, and you own 3 email addresses, you’ll be allowed 75 messages across those 3 email addresses.
Once you have 100 messages across all your starred and private email addresses, the oldest unstarred ones will be removed.
Getting more storage
Message storage can be purchased on a per-message basis in blocks listed on the pricing page.