No, it's better to self host xmpp, matrix and run a simplex relay. So you don't need to trust anybody and contribute to decentralize the web.
All these 3 leak your MetaData !!! Check this: SecureMessagingApps.com Rate: 🟩=3 🟨=1 🟥=0 Results (and where the money comes from) 1. Threema = 86 = most secure Messenger (User pays one-time) 2. Signal (Brian Acton / Ex-WhatsApp) = 80 3. Session (Loki Coin & suspicious Chinese) = 77 4. Wire (Janus Fries / Ex-Skype) = 68 5. SimpleX Chat *= 67 6. Wickr (Amazon) = 61 7. Element / Matrix (Amdocs / Morris Kahn) = 56 8. Apple iMessage (Hardware sales) = 37 9. WhatsApp (Meta) = 32 10. Google Messages (Ads) = 28 11. Telegram (Putin) = 27 12. Facebook Messenger (Meta) = 26 13. Microsoft Skype =10 * SimpleX Chat got 380.000 $ from VillageGlobal = Jez Bezos, Mark Zuckerberg, Bill Gates, ect.
Can one self-host a threema server?
No, xmpp and simplex do not leak metadata.
The header of XMPP-Messages are unencrpyted, A Spyserver in the net can easily collect all the data, that fly´s by! SimpleX collects IP-Adresses and is connected to Big Data Companys - see Messenger list. 85% of all Smartphone run on Google Android, which sends encrypted data to Google, everyday. So Google knows nearly every User PLUS its IP-Adress.
I don't find the funding of VillageGlobal for Simplex concerning. The founder clearly said that VG does not make any operational decisions and they are just an investor. Simplex has had plans on how to monetize corporate clients from the early days and that's what VG is interested in. Returns from that business model. Besides that: Simplex is open source and you can host your own servers, that way nobody at simplex even knows you use their app and can't get any data from you.
There are no "free" messenger in this word. They all need money to run - websides, employees, Offices, ect. If "Big"-Money is involved it won´t end good. OpenSource doesn´t help because you can´t check if the server-code really runs on all relays. A few relays with an Metadata-Collector and your privacy is gone!
For most messengers I would agree but Simplex is designed in a different way. Don't trust a relay you don't run yourself? Don't connect to it. You can chat using Simplex without ever connecting to a Server not run by you. And if you do want to connect to your recipient's relay, just use Tor and there is no evidence of where the message came from.
If the recipient is offline, the messages are sent to relay! And as a rule, only the recipient knows whether they are currently online or offline. TOR is infected by the US government It´s all about Metadata!
Always remember: "Metadata absolutely tells you everything about somebodyís life. If you have enough metadata, you donít really need content." NSA General Counsel Stewart Baker Check: "We kill people based on metadata" https://www.nybooks.com/daily/2014/05/10/we-kill-people-based-metadata/
With Simplex are always routed through relays. What metadata does the recipient relay server get then?
SimpleX collects IP-Adresses and is connected to Big Data Companys - see Messenger list above! 85% of all Smartphone run on Google Android, which sends encrypted data to Google, everyday. So Google knows nearly every User PLUS its IP-Adress.
You are not answering the question. If you argue that Google has a backdoor to all mobile phones than no messenger is safe to use. SimpleX Ltd clearly state that they do not store IP addresses. Don't trust them? Use Tor, a VPN or both. By the way you can enable private routing which routes your outgoing messages over your inbound relay which you can self host and trust. That way your device NEVER CONNECTS TO A SERVER YOU DONT CONTROLL. I don't know why you shill Threema so much they are in no aspect better than SimpleX. Your adversity to "Big money" is purely ideological and not based in fact. Threema receives money from government actors (that pay for a good messenger). Does that corrupt them? Don't just refer to some messenger tier list, do your own research.
No backdoor! Google knows the IP to nearly every User! So: TOR, VPN, it all doesn´t matter!
The traffic of Threema only visits one server - the Threema Server. And this server does NOT store metadata nor IP-Adresses.
"What is crystal clear, however, is that there will never be a Threema version that’s spying on its users in any way, shape, or form. The reason Threema was created is to provide a highly secure, completely private, and anonymous means of communication. " https://threema.ch/en/blog/posts/stop-chat-control
"Metadata absolutely tells you everything about somebodyís life. If you have enough metadata, you donít really need content." NSA General Counsel Stewart Baker Check: "We kill people based on metadata" https://www.nybooks.com/daily/2014/05/10/we-kill-people-based-metadata/