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A main technical and economic difference to #matrix servers/clients:
The family of #deltachat apps uses #chatmail servers as ephemeral message transports that know nothing and forget everything: Servers don't store group metadata or cryptographic identities and delete messages after download by default. In effect, a 30EUR/month #chatmail server with 10K's of active users hums along with 2% IO and CPU pressure, 1GB RAM and negligible disk usage. No Pro-version or Kubernetes needed to scale ;)
#matrix #chatmail #deltachat
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Ander
just to know, what would you say is the average hardware specs you'll need for an instance of 100-150 active chatmail users?
Delta Chat
the cheapest you can get should suffice. SSD disc is always good but even without should be fine. A friend runs it on a raspberry pi for a housing project.
Oriol Piera
if this service scale, how can we prevent SPAM accounts?
Delta Chat
By not having a central directory of users which you can search to spam them :) Delta Chat addresses are typically not public in any way, contact is initiated by invite links or by scanning a QR code in person.
Mikalai
Shorter description is,
delta chat keeps all social concepts (and metadata) on app level of protocol stack, not on transport's one, i.e. smtp.
Hence servers/service providers can know less.
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