modbender sog — Standards Ops Gadget
CLI for IMAP/SMTP/CalDAV/CardDAV/WebDAV. Open-standards alternative to gog (Google) and mog (Microsoft).
Quick Start
sog auth add you@fastmail.com --discover
sog auth test
sog mail list
Global Flags
--account, -a Account email to use ($SOG_ACCOUNT)
--json JSON output (for scripting)
--plain TSV output (parseable)
--force Skip confirmations
--no-input Never prompt (CI mode)
--verbose, -v Debug logging
--ai-help Detailed help text
Authentication
sog auth add <email> [flags]
--discover Auto-discover servers from DNS
--imap-host IMAP server hostname
--imap-port IMAP port (default: 993)
--smtp-host SMTP server hostname
--smtp-port SMTP port (default: 587)
--caldav-url CalDAV server URL
--carddav-url CardDAV server URL
--webdav-url WebDAV server URL
--password Password (stored in keychain)
sog auth list # List accounts
sog auth test [email] # Test connection
sog auth remove <email> # Remove account
sog auth password <email> # Set protocol-specific passwords
--imap, --smtp, --caldav, --carddav, --webdav
Mail (IMAP/SMTP)
sog mail list [folder]
--max N Maximum messages (default: 20)
--unseen Only unread messages
sog mail get <uid>
--headers Headers only
--raw Raw RFC822 format
sog mail search <query>
# IMAP SEARCH syntax: FROM, TO, SUBJECT, SINCE, BEFORE, etc.
# Example: sog mail search "FROM john SINCE 1-Jan-2026"
sog mail send --to <email> --subject <text> [flags]
--to Recipient(s)
--cc CC recipient(s)
--bcc BCC recipient(s)
--subject Subject line
--body Message body
--body-file Read body from file (- for stdin)
--body-html HTML body content
sog mail reply <uid> --body <text>
sog mail forward <uid> --to <email>
sog mail move <uid> <folder>
sog mail copy <uid> <folder>
sog mail flag <uid> <flag> # Flags: seen, flagged, answered, deleted
sog mail unflag <uid> <flag>
sog mail delete <uid>
Folders
sog folders list
sog folders create <name>
sog folders delete <name>
sog folders rename <old> <new>
Drafts
sog drafts list
sog drafts create [flags] # Same flags as mail send
sog drafts send <uid>
sog drafts delete <uid>
Calendar (CalDAV)
sog cal list [calendar]
--from Start date (default: today)
--to End date (default: +30d)
--max Maximum events
sog cal get <uid>
sog cal search <query> # Search in title/description/location
sog cal today [calendar]
sog cal week [calendar]
sog cal create <title> --start <datetime> [flags]
--start Start time (YYYY-MM-DDTHH:MM or YYYY-MM-DD for all-day)
--end End time
--duration Duration (1h, 30m)
--location Location
--description Description
sog cal update <uid> [flags] # Same flags as create
sog cal delete <uid>
sog cal calendars # List calendars
Contacts (CardDAV)
sog contacts list [address-book]
--max Maximum contacts
sog contacts get <uid>
sog contacts search <query> # Search name/email/phone
sog contacts create <name> [flags]
-e, --email Email address(es)
-p, --phone Phone number(s)
--org Organization
--title Job title
--note Note
sog contacts update <uid> [flags] # Same flags as create
sog contacts delete <uid>
sog contacts books # List address books
Tasks (CalDAV VTODO)
sog tasks list [list]
--all Include completed tasks
sog tasks add <title> [flags]
--due Due date (YYYY-MM-DD)
-p, --priority Priority (1-9, 1=highest)
-d, --description Description
sog tasks get <uid>
sog tasks update <uid> [flags] # Same flags as add
sog tasks done <uid> # Mark complete
sog tasks undo <uid> # Mark incomplete
sog tasks delete <uid>
sog tasks clear # Delete all completed tasks
sog tasks due <date> # Tasks due by date
sog tasks overdue # Overdue tasks
sog tasks lists # List task lists
Files (WebDAV)
sog drive ls [path]
-l Long format with details
--all Show hidden files
sog drive get <path> # Get file metadata
sog drive download <remote> [local]
sog drive upload <local> [remote]
sog drive mkdir <path>
sog drive delete <path>
sog drive move <src> <dst>
sog drive copy <src> <dst>
sog drive cat <path> # Output file to stdout
Meeting Invites (iTIP/iMIP)
sog invite send <summary> <attendees>... --start <datetime> [flags]
--start Start time
--duration Duration (default: 1h)
--location Location
--description Description
sog invite reply <file> --status <accept|decline|tentative>
--comment Optional comment
sog invite cancel <uid> <attendees>...
sog invite parse <file> # Parse .ics file
sog invite preview <summary> <attendees>... --start <datetime>
IMAP IDLE
sog idle [folder] # Watch for new mail (push notifications)
--timeout Timeout in seconds
Output Formats
- Default: Human-readable colored output
--json: One JSON object per line (JSONL)--plain: Tab-separated values (TSV)
Examples
# List recent emails
sog mail list --max 10
# Send an email
sog mail send --to user@example.com --subject "Hello" --body "Hi there"
sog mail send --to user@example.com --subject "Report" --body-file report.md
cat draft.txt | sog mail send --to user@example.com --subject "Hi" --body-file -
# Today's calendar
sog cal today
# Create a meeting with invite
sog invite send "Team Sync" alice@example.com bob@example.com \
--start "2026-01-25T14:00" --duration 30m --location "Zoom"
# Add a task
sog tasks add "Review PR" --due 2026-01-26 -p 1
# Upload a file
sog drive upload report.pdf /documents/
# Search contacts
sog contacts search "John"
Tested Providers
- Fastmail ✅ (full support)
Other standards-compliant providers should work but have not been tested yet.
Credential Storage
Passwords are stored securely in the native system credential store:
| Platform | Backend |
|---|---|
| macOS | Keychain |
| Windows | Windows Credential Manager |
| Linux/BSD | D-Bus Secret Service (GNOME Keyring, KWallet) |
Supports separate passwords per protocol (IMAP, SMTP, CalDAV, CardDAV, WebDAV).
Notes
- Set
SOG_ACCOUNT=you@example.comto avoid repeating--account - Part of the Ops Gadget family: gog (Google), mog (Microsoft), sog (Standards)