fastmail

Automate Fastmail account management using the fm CLI.

Updated Apr 1, 2026
One-click install
npx skills add https://github.com/vicyap/fastmail-cli --skill fastmail-vicyap
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: fastmail
Source: https://github.com/vicyap/fastmail-cli/tree/main/.agents/skills/fastmail
Command: npx skills add https://github.com/vicyap/fastmail-cli --skill fastmail-vicyap

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

Enable fast, scriptable management of Fastmail accounts from the command line, replacing tedious manual steps with automation.

Core Features & Use Cases

  • Email operations: read, send, thread, move, flag, and delete across mailboxes.
  • Mailboxes and identities: manage mailboxes, identities, and organization workflows.
  • Masked Email, Sieve Filters, and Vacation: create disposable addresses, upload sieve scripts, and configure auto-replies for travel or absence.

Quick Start

Authenticate with fm auth login and start managing emails using commands like fm inbox, fm read, and fm mailbox list.

Frequently Asked Questions about fastmail

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I automate Fastmail email management from the command line?

Fastmail email management is automated via the fm CLI, enabling scriptable reading, sending, organizing, and deleting of emails across mailboxes without manual web interface interaction.

How do I create and manage Fastmail masked emails using a CLI?

Fastmail masked emails are managed using fm CLI commands to create disposable email addresses, allowing you to generate and control masked identities directly from the terminal.

Can I configure Fastmail vacation replies and Sieve filters without using the web interface?

Fastmail vacation replies and Sieve filters can be configured entirely via the fm CLI, allowing you to upload sieve scripts and set up auto-replies for absence directly from the command line.

Do I need an API token to manage Fastmail mailboxes with the fm CLI?

Yes, an API token is required to manage Fastmail mailboxes with the fm CLI. You must install the fm binary, authenticate with fm auth login, and provide a valid Fastmail API token.

What is the best way to script Fastmail mailbox organization and identity workflows?

The best way to script Fastmail mailbox organization is using the fm CLI, which provides dedicated commands to manage mailboxes, identities, and organizational workflows programmatically.

Why does my fm CLI authentication fail when connecting to Fastmail?

Fastmail fm CLI authentication fails if the binary is missing, the fm auth login step is incomplete, or the provided Fastmail API token is invalid or lacks required permissions.