.env.example

# ---------- identity ----------
MAIL_DOMAIN=mail.example.com
MAIL_HOSTNAME=mail.example.com
APP_URL=https://mail.example.com

# ---------- stalwart admin ----------
# Set by the bootstrap; Stalwart generates the permanent admin on first setup.
STALWART_ADMIN_USER=admin@mail.example.com
STALWART_ADMIN_PASSWORD=

# ---------- outbound smarthost relay ----------
# Outbound :25 is BLOCKED by Hostinger on this VPS — direct MX delivery is
# impossible. All remote mail must egress through a relay on 587/STARTTLS.
# Examples: smtp.resend.com | smtp.sendgrid.net | smtp.mailgun.org | smtp.titan.email
RELAY_HOST=
RELAY_PORT=587
RELAY_USERNAME=
RELAY_PASSWORD=
# The relay's own SPF include, folded into the generated SPF record.
# e.g. _spf.resend.com | sendgrid.net | mailgun.org
RELAY_SPF_INCLUDE=

# ---------- telemetry ----------
# Signing secret for tracking-pixel / click-redirect tokens. Prevents forged
# open+click events from anyone who can read a message body.
TELEMETRY_SECRET=

# ---------- AI assistant (DeepSeek) ----------
# Used for compose/reply drafting, message summaries and the inbox overview.
# Leave blank to ship without AI: the UI hides those affordances entirely
# rather than offering buttons that fail.
DEEPSEEK_API_KEY=
DEEPSEEK_MODEL=deepseek-chat