Fastmail agent skills for Claude Code, Cursor and RevampKey

5 ready-made playbooks that teach an AI agent how to do real Fastmail work: which tools to call, what to check first, and when to stop and ask you.

Download RevampKey, free I have it: connect Fastmail

Connect Fastmail once and all 5 skills install themselves and stay up to date. Mac, Windows and Linux.

All 5 Fastmail skills

Each skill is one job. You ask in plain words and the agent loads the skill that matches, then follows its steps.

Start hereAsks before writing24 Fastmail tools

Use Fastmail safely with AI

A practical guide to using the Fastmail connector: confirm the account and access level, search efficiently, and get explicit approval before any change to mail, calendar, contacts or notes.

Use it when

You are starting a Fastmail task with an AI assistant for the first time
You want to know which Fastmail actions the assistant can take without asking
A Fastmail connection shows a permission or sign-in error

Tools it uses

list_identities
list_calendars
search_email
read_email
read_thread
search_contacts
search_org_contacts
search_events
search_notes
read_note
add_to_note
create_note
list_folders
archive_email
delete_email
draft_email
compose_event
create_event
delete_event
rsvp_event
create_contact
set_memo
delete_contact
delete_note

Example

Find the three most recent emails from my accountant and tell me what they need from me.

Your Fastmail account is confirmed as the address you connected, with read access. I searched your Inbox for mail from your accountant and found 3 messages from the last 30 days. The most recent asks for last year's tax receipts by Friday. I did not open attachments, and I have not changed or replied to anything.

Use in RevampKeyRead the full skill →

Read-only3 Fastmail tools

Brief your calendar week with AI, read-only

Reads your Fastmail calendars for the coming week and returns a short briefing that flags overlapping events, invitations awaiting a reply and meetings that need preparation. It changes nothing on your calendar.

Use it when

You want to see what your week looks like before Monday starts.
You suspect a double-booking and want the clashes listed in one place.
You need to know which meetings need preparation before tomorrow.

Tools it uses

list_calendars
search_events
search_email

Example

Give me a brief of my calendar for next week and flag anything that clashes.

Week of 9 June to 15 June, time zone Europe/London. Needs attention: a 40-minute overlap on Tuesday between Vendor review and Budget sync, and two invitations still awaiting your reply, one on Wednesday and one on Friday. Two meetings look like they need preparation, the Thursday client call and the Friday interview panel. Nothing has been changed on your calendar.

Use in RevampKeyRead the full skill →

Asks before writing5 Fastmail tools

Clean up your Fastmail contacts

Audits your Fastmail contacts for duplicates, missing details and stale entries, then proposes a merge and edit list. It changes nothing until you approve each item.

Use it when

Your address book has the same person under two names or two emails
Old contacts with no phone or email are cluttering search
You want a reviewed list before any contact is merged or deleted

Tools it uses

search_contacts
search_org_contacts
create_contact
set_memo
delete_contact

Example

Clean up my personal Fastmail contacts. Find duplicates and entries with missing details, and show me what you'd change before touching anything.

I read 412 contacts across 3 pages. I found 9 likely duplicate pairs, 4 of them matched on the same email, and 17 entries missing both phone and email. I have not changed anything yet. Reply with the items you approve and I'll apply them one at a time.

Use in RevampKeyRead the full skill →

Asks before writing6 Fastmail tools

Schedule meetings in Fastmail with AI

Finds workable meeting times across your Fastmail calendars, drafts the event, and checks the calendar, time zone and sending address with you. It creates or answers nothing until you approve the exact version.

Use it when

You need a 45-minute slot next week that works for three people.
An invitation arrived and you want to know if it clashes before you accept.
You want to move a recurring check-in without messing up the series.

Tools it uses

list_calendars
list_identities
search_events
compose_event
create_event
rsvp_event

Example

Find me a 45-minute slot next Tuesday or Wednesday afternoon for a call with Hannah and Sam, and draft the invite.

I found two options: Tuesday 14:00–14:45 and Wednesday 15:30–16:15, both in your time zone. Sam's calendar was only partly visible to me, so please confirm with him. The draft goes out from your work address on your Work calendar. Nothing is created until you approve the version you want.

Use in RevampKeyRead the full skill →

Read-only5 Fastmail tools

Triage your Fastmail inbox with AI

Sorts your unread or recent Fastmail mail into act-now, reply-later, file and ignore buckets, based on what each message actually asks of you. It reads selectively, drafts nothing and changes nothing until you approve a batch.

Use it when

You have a long unread list and want to see what is urgent first
You want a daily sort of the last few days of email without replying to anything yet
You need to find the messages with real deadlines hidden among newsletters and notices

Tools it uses

list_identities
search_email
read_email
read_thread
draft_email

Example

Triage my unread mail from the last three days and tell me what needs action today.

I checked 38 unread messages from the last three days on your main identity. Eleven look like act-now items; the most urgent is a contract from a client asking for a signature by Thursday. Fourteen are reply-later, nine can be filed, and four are newsletters you can ignore. Nothing has been moved or replied to; tell me which batch to act on.

Use in RevampKeyRead the full skill →

Get all 5 without copying a file

RevampKey adds the skills when you connect Fastmail, updates them for you and removes them when you disconnect.

Download RevampKey

How Fastmail skills work

Connect Fastmail
The Fastmail MCP server gives the agent its tools.
Ask in plain words
“Give me a brief of my calendar for next week and flag anything that clashes.” Each SKILL.md says when it applies, so only the one that fits is loaded.
Approve any change
The agent calls the tools in order, checks its work, and shows you any change before it makes it.

How to install Fastmail skills

In RevampKey the skills install themselves when you connect Fastmail. In other tools each skill is one folder with a SKILL.md file, and you also need the Fastmail MCP server connected there.

About 1 minute · nothing to copy

Download RevampKey for Mac, Windows or Linux and sign in.
Open Connectors and connect Fastmail. All 5 skills come with it and stay up to date; they go away when you remove the connector.
Ask in plain language, for example “Give me a brief of my calendar for next week and flag anything that clashes.”
Download RevampKeyConnect Fastmail · 1 click
Get RevampKey to connect Fastmail
RevampKey is a free desktop app for Mac, Windows and Linux. Install it, sign in, and Fastmail is one click away with its skills already attached.
Download RevampKey
Not now? Use the skills in your current tool
for s in essentials calendar-week-brief contact-cleanup meeting-scheduling-assistant triage-inbox; do curl -fsSL --create-dirs -o .claude/skills/fastmail-$s/SKILL.md https://revampkey.com/marketplace/fastmail/skills/$s/SKILL.md done
Other tools

Into this project’s .claude/skills folder

Connect the Fastmail MCP server in Claude Code.

Run this in your project folder to add all 5 skills:

for s in essentials calendar-week-brief contact-cleanup meeting-scheduling-assistant triage-inbox; do
  curl -fsSL --create-dirs -o .claude/skills/fastmail-$s/SKILL.md https://revampkey.com/marketplace/fastmail/skills/$s/SKILL.md
done

Ask in plain language, for example “Give me a brief of my calendar for next week and flag anything that clashes.”

Into the shared .agents/skills folder

Connect the Fastmail MCP server in Cursor.

Run this in your project folder to add all 5 skills:

for s in essentials calendar-week-brief contact-cleanup meeting-scheduling-assistant triage-inbox; do
  curl -fsSL --create-dirs -o .agents/skills/fastmail-$s/SKILL.md https://revampkey.com/marketplace/fastmail/skills/$s/SKILL.md
done

Ask in plain language, for example “Give me a brief of my calendar for next week and flag anything that clashes.”

Into the shared .agents/skills folder

Connect the Fastmail MCP server in Codex.

Run this in your project folder to add all 5 skills:

for s in essentials calendar-week-brief contact-cleanup meeting-scheduling-assistant triage-inbox; do
  curl -fsSL --create-dirs -o .agents/skills/fastmail-$s/SKILL.md https://revampkey.com/marketplace/fastmail/skills/$s/SKILL.md
done

Ask in plain language, for example “Give me a brief of my calendar for next week and flag anything that clashes.”

Into the shared .agents/skills folder

Connect the Fastmail MCP server in VS Code.

Run this in your project folder to add all 5 skills:

for s in essentials calendar-week-brief contact-cleanup meeting-scheduling-assistant triage-inbox; do
  curl -fsSL --create-dirs -o .agents/skills/fastmail-$s/SKILL.md https://revampkey.com/marketplace/fastmail/skills/$s/SKILL.md
done

Ask in plain language, for example “Give me a brief of my calendar for next week and flag anything that clashes.”

RevampKey or copy the files?

In RevampKey

One click when you connect Fastmail
Updated for you when a skill improves
Removed when you disconnect
The MCP server is set up for you
800+ other connectors, same way

Download free

Copy into your project

One command per project
Run it again to get updates
You connect the Fastmail MCP server yourself
Works in Claude Code, Cursor, Codex and VS Code

See the command

Fastmail skills FAQ

What is a Fastmail agent skill?

A SKILL.md file: a short playbook an AI agent loads when your request matches it. Each Fastmail skill describes one job, which Fastmail tools to use in which order, what to check first and when to stop and ask you.

Do the Fastmail skills change anything on their own?

2 of the 5 only read. The others tell the agent to show you the change and wait for a yes before it creates, edits or deletes anything in Fastmail.

Which tools can use these skills?

Any agent that reads the open Agent Skills format: Claude Code, Cursor, Codex, VS Code with Copilot and RevampKey. In RevampKey they are attached when you connect Fastmail; elsewhere you copy the folders into your project or skills directory.

Do I need the Fastmail MCP server too?

Yes. The skills tell the agent how to do the work; the Fastmail MCP server gives it the tools to do it. The Fastmail MCP setup guide covers every client.

Fastmail MCP server setup · This page as Markdown

Put Fastmail’s best workflows in your agent

Download RevampKey, connect Fastmail and ask your first question in about a minute.

Download RevampKey Connect Fastmail · 1 click

All 5 Fastmail skills

Use Fastmail safely with AI

Use it when

Tools it uses

Brief your calendar week with AI, read-only

Use it when

Tools it uses

Clean up your Fastmail contacts

Use it when

Tools it uses

Schedule meetings in Fastmail with AI

Use it when

Tools it uses

Triage your Fastmail inbox with AI

Use it when

Tools it uses

Get all 5 without copying a file

How Fastmail skills work

How to install Fastmail skills

RevampKey or copy the files?

In RevampKey

Copy into your project

Fastmail skills FAQ

Put Fastmail’s best workflows in your agent

Skills for related tools