The Stalwart Command Line Interface (CLI) allows system administrators to perform tasks such as managing queues or pending DMARC and TLS reports. Future versions of Stalwart SMTP will include a web-based management interface, but for the time being the CLI is the main tool to manage Stalwart SMTP.


The CLI tool should be already installed on the server where Stalwart SMTP is running at /usr/local/stalwart-smtp/bin/stalwart-cli. If you would like to install the CLI on a different computer, follow the instructions for your platform below:

  • Linux / MacOS:

    curl --proto '=https' --tlsv1.2 -sSf | sh

    Once the installation is completed, the CLI tool will be available in your home directory at $HOME/.stalwart/stalwart-cli. You may add the $HOME/.stalwart directory to your PATH environment variable or move the stalwart-cli binary to a location that is already on your PATH variable.

  • Windows:

    Download the CLI tool directly from here.


The default location of the Stalwart CLI is /usr/local/stalwart-smtp/bin/stalwart-cli (or $HOME/.stalwart/stalwart-cli when installed manually). When executed without any parameters, the CLI tool prints a brief help page such as this one:

$ stalwart-cli

Stalwart Mail Server CLI

Usage: stalwart-cli [OPTIONS] --url <URL> <COMMAND>

  account  Manage user accounts
  domain   Manage domains
  list     Manage mailing lists
  group    Manage groups
  import   Import accounts and domains
  queue    Manage SMTP message queue
  report   Manage SMTP DMARC/TLS report queue
  help     Print this message or the help of the given subcommand(s)

  -u, --url <URL>                  JMAP or SMTP server base URL
  -c, --credentials <CREDENTIALS>  Authentication credentials
  -h, --help                       Print help
  -V, --version                    Print version

The CLI tool expects two required arguments: the URL of your Stalwart SMTP management interface (which is specified with the -u option) server and the authentication credentials (which may be specified with the -c option or at the prompt).

For example, to list all messages queued for delivery:

$ stalwart-cli -u -c PASSWORD queue list


Stalwart SMTP requires that requests for management tasks to be authenticated. The authentication credentials can be provided either through the command line using the -c argument or through a prompt that will appear if the argument is not provided. The credentials should be entered in the format of account_name:password. If the account name is not specified, the default system administrator account, admin, will be used.

For example, to authenticate with postmaster and password secret_pass:

$ stalwart-cli -u -c postmaster:secret_pass queue list

However, using the -c argument to provide the authentication credentials should be avoided as these will be recorded in the terminal’s history. Instead, type the password at the prompt:

$ stalwart-cli -u queue list

Enter SMTP admin credentials:  ******