Autocomplete for Previously Emailed Addresses

[jiron2000]

I've done a search for this topic, but came up empty.

I like how the Web OS mail app auto completes the names of recipients when that contact is in my address book. However, I would also like the autocomplete choices to include address which are not in my contacts, but I have previously emailed.

Is this something currently available and I am just stupid? Any news about future implementations of this feature, official or homebrew?