Matrix Synapse server hosting

What it needs

Memory

2 GB RAM or more

Disk

20 GB or more

System

Debian 13

Smallest plan

Iron, €14.99 / mo

Synapse wants at least 1 GB of free RAM. Joining large public rooms takes more, as does PostgreSQL, which the docs require for real use.

Ports to open

Set these in the free firewall in the panel, everything else stays closed.

Install Matrix

1. 1. Add the official Matrix package repository

   apt install -y lsb-release wget apt-transport-https
   wget -O /usr/share/keyrings/matrix-org-archive-keyring.gpg https://packages.matrix.org/debian/matrix-org-archive-keyring.gpg
   echo "deb [signed-by=/usr/share/keyrings/matrix-org-archive-keyring.gpg] https://packages.matrix.org/debian/ $(lsb_release -cs) main" > /etc/apt/sources.list.d/matrix-org.list

2. 2. Install Synapse, give it your server name when asked

   apt update
   apt install -y matrix-synapse-py3

3. 3. Install PostgreSQL and point Synapse at it, SQLite is not for production

   apt install -y postgresql

4. 4. Put Caddy in front for HTTPS, with this in /etc/caddy/Caddyfile

   apt install -y caddy
   
   matrix.example.com {
       reverse_proxy /_matrix/* localhost:8008
       reverse_proxy /_synapse/client/* localhost:8008
   }

5. 5. Create your first user

   register_new_matrix_user -c /etc/matrix-synapse/homeserver.yaml http://localhost:8008

Commands from the official Matrix docs, checked in November 2026. The project may change them, so look there if one fails.