diff --git a/env.example b/env.example
index b6a0afd..cf5d952 100644
--- a/env.example
+++ b/env.example
@@ -5,16 +5,16 @@
 API_KEY=
 
 # Logging
-LOG_LEVEL=DEBUG
+LOG_LEVEL=INFO
 
-# IMAP (incoming mail)
+# IMAP (incoming mail) - used only if ACCOUNTS_JSON/ACCOUNTS_CONFIG_PATH not set
 IMAP_HOST=imap.example.com
 IMAP_PORT=993
 IMAP_USE_SSL=true
 IMAP_USERNAME=
 IMAP_PASSWORD=
 
-# SMTP (outgoing mail)
+# SMTP (outgoing mail) - used only if ACCOUNTS_JSON/ACCOUNTS_CONFIG_PATH not set
 SMTP_HOST=smtp.example.com
 SMTP_PORT=587
 SMTP_USE_TLS=true
@@ -23,6 +23,23 @@ SMTP_USERNAME=
 SMTP_PASSWORD=
 SMTP_FROM=
 
+# Multi-account configuration (optional; overrides single-account IMAP/SMTP above)
+# Either:
+# - ACCOUNTS_JSON: inline JSON array of accounts
+# - ACCOUNTS_CONFIG_PATH: path to JSON file mounted in the container
+ACCOUNTS_JSON=
+ACCOUNTS_CONFIG_PATH=
+
+# Default account ID (used when tools are called without specifying "account")
+# If blank:
+# - If only one account exists, it is default.
+# - Otherwise, an account with id "default" is preferred, or the first one is used.
+DEFAULT_ACCOUNT=
+
+# Time and timezone (for get_current_time tool)
+# IANA timezone (e.g. "America/New_York", "Europe/London", "UTC")
+TIMEZONE=UTC
+
 # Optional default CC/BCC (comma-separated)
 DEFAULT_CC=
 DEFAULT_BCC=
@@ -31,10 +48,31 @@ DEFAULT_BCC=
 BUSINESS_DESCRIPTION=
 PERSONNEL_JSON=[]
 
-# Scheduled send (seconds between checks)
+# Scheduled send (seconds between checks for scheduled emails)
 SCHEDULED_SEND_INTERVAL=10
 
-# CalDAV / CardDAV (e.g., Nextcloud)
+# HTML email signature (optional)
+# Can be:
+# - Inline HTML string, or
+# - A file path inside the container (e.g. /etc/mcp-email/signature.html)
+EMAIL_HTML_SIGNATURE=
+
+# LLM identity defaults (fallback for signature placeholders)
+# These are used if signature_vars is not provided in a send_email call.
+LLM_NAME=
+LLM_TITLE=
+LLM_PHONE=
+LLM_ADDRESS=
+LLM_EMAIL=
+
+# External summary model (optional) for summarize_email tool
+# If set, emails can be summarized via an external LLM to save context.
+EXTERNAL_SUMMARY_MODEL_ENDPOINT=
+EXTERNAL_SUMMARY_MODEL_API_KEY=
+EXTERNAL_SUMMARY_MODEL_NAME=gpt-4o-mini
+EXTERNAL_SUMMARY_MAX_TOKENS=400
+
+# CalDAV / CardDAV (e.g., Nextcloud) - if used by integrations
 DAV_BASE_URL=
 DAV_USERNAME=
 DAV_PASSWORD=