Inquiries
Our team will assist you with all your questions and concerns. Every conversation is confidential.
Secure communication
If you prefer encrypted communication, we're also available through a variety of secure channels.
A free phone app for calls and messages. Communications are end-to-end encrypted, so only your intended recipients can read them. Signal's servers keep your profile information but do not access or store your messages.
Reach us at +1 (209) 788-9235
We highly recommend encrypted mail. If you don't already use a service that encrypts message contents, Mailvelope is a free browser extension that adds end-to-end encryption to your existing email address. It encrypts the message content, but not the sender, recipient, subject line, or send time.
PGP fingerprint80A1 1F81 CC52 4AB2 B27E 0A40 42C1 D497 4C24 A354
We recommend using a public mailbox, not a post office, to mail a letter or package to UpStream.
UpStream Intelligence (USA)