fmcli 2026.4.0

Multi-account Fastmail CLI

fmcli

Multi-account Fastmail CLI for email, calendar, contacts, and files.

Features

• Email: list, search, read, send, reply
• Mailbox: list, move, mark-read/spam
• Masked Email: list, create, delete
• Calendar: list events, create, delete
• Contacts: list, search, create, delete
• Files/Drive: list, download, upload, delete
• Multi-account: configure multiple Fastmail accounts, switch with --account

Installation

git clone https://github.com/sussdorff/fmcli
cd fmcli
uv sync

Configuration

Create ~/.config/fmcli/config.toml:

[[accounts]]
name = "personal"
email = "[e-mail]"
token = "your-api-token"

[[accounts]]
name = "work"
email = "[e-mail]"
token = "your-api-token"
app_password = "your-app-password"  # required for CalDAV/CardDAV/WebDAV

Get your API token from Fastmail Settings → Privacy & Security → API Tokens.

The app_password is only needed for calendar, contacts, and files commands. Create one at Fastmail Settings → Privacy & Security → App Passwords.

Select account:

• --account <name> flag on any command
• FMC_ACCOUNT=work fmcli email list
• Default: first account in config file

Usage

# Account management
fmcli account list
fmcli account show personal

# Email
fmcli email list
fmcli email list --account work --limit 50
fmcli email search "invoice"
fmcli email read <email-id>
fmcli email send --to [e-mail] --subject "Hello" --body "Hi there"
fmcli email reply <email-id> --body "Thanks!"

# Mailbox
fmcli mailbox list
fmcli mailbox move <email-id> <mailbox-id>
fmcli mailbox mark-read <email-id>
fmcli mailbox mark-read <email-id> --unread
fmcli mailbox mark-spam <email-id>

# Masked Email
fmcli masked-email list
fmcli masked-email create --for-domain shop.example.com --description "Online shopping"
fmcli masked-email delete <masked-email-id>

# Calendar
fmcli calendar list
fmcli calendar list --days 7
fmcli calendar create --title "Team meeting" --start 2024-02-01T10:00:00 --end 2024-02-01T11:00:00
fmcli calendar delete <event-uid>

# Contacts
fmcli contacts list
fmcli contacts search "Alice"
fmcli contacts create --name "Alice Smith" --email [e-mail] --phone "[phone]"
fmcli contacts delete <contact-uid>

# Files/Drive
fmcli files list
fmcli files list --path /Documents
fmcli files download /report.pdf ./report.pdf
fmcli files upload ./local.txt /remote.txt
fmcli files delete /old-file.txt

Shell Completions

fmcli --install-completion

Development

uv sync
uv run pytest
uv run pytest --cov=fmcli --cov-report=term-missing

Stack

• Python 3.11+, UV
• jmapc — JMAP email
• caldav — CalDAV calendar
• webdavclient3 — CardDAV contacts + WebDAV files
• Typer — CLI framework
• pytest + pytest-cov + pytest-mock