4 ms·IndexedDB should be a solution to this, but it's not as widely supported as localStorage.by jamesgeck0 7y agoIndexedDB should be a solution to this, but it's not as widely supported as localStorage.zamadatix 7y ago96.5% vs 97.5%, doesn't seem to be the holdback any longer.z3t4 7y agoCould also use service worker to prime the cache. And generate static pages for each e-mail/thread. New mail could be pushed using web push. The problem is the outbox, how to send sent mail once user go online !?