Encrypted, and only yours.
An on-device encrypted backup file you export and restore yourself — domain-separated keys derived from your wallet, never a Weesper server, and a format that states plainly what it does and does not contain.
This feature runs on-device — install the app to use it. Payments, Wallet, Username and Connect are usable right here on the web.
More: Messaging · Wallet · Payments · Identity · Username · Contacts