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/tools · verified 2026-05-13

Threema

B

Swiss paid one-time messenger. Phone-number optional, anonymous IDs, no metadata.

At a glance

Grade
B ()
KYC posture
light kyc
Fees
$5 one-time · Swiss · audited · no phone required
Last verified
2026-05-13
Operating since
2012 · 14y — Threema messenger launched 2012 (Swiss-based encrypted messaging). Hand-set by curator.
B Why grade B?

Solid pick. Verified working but with a meaningful caveat (UX rough, smaller market, intermediate trust step, partial coverage). Listed because the trade-off is sometimes worth it.

Full rubric + 7-step verification walkthrough at /methodology.

Review

Swiss-based commercial messenger that's privacy-first. One-time purchase (no subscription, no ads). Identifier is a random 8-character Threema ID, NOT a phone number — they offer optional phone+email linking but it's not required. E2EE, perfect forward secrecy. Audited multiple times. Used by Swiss government and EU for sensitive comms.

Fees

$5 one-time · Swiss · audited · no phone required

Links

Sourced from operator pages — verify identity via more than one channel before trusting time-sensitive instructions.

Audit trail — receipts for the editorial claim

  • UPSTREAM Up · HTTP 200 · 192ms · checked 2h ago
  • ONION No .onion mirror listed
  • MANUAL Last manual verification 2026-05-13 (<90d)

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