Mailtrap agent skills for Claude Code, Cursor and RevampKey

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

Download RevampKey, free I have it: connect Mailtrap

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

All 5 Mailtrap 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 writing23 Mailtrap tools

Use Mailtrap safely with AI

Work with your Mailtrap account through AI, confirming the account and whether each action targets sandbox testing or live sending. It asks before sending mail or deleting anything.

Use it when

Before sending a test email, to make sure it goes to a sandbox inbox
When you connect Mailtrap and want to know what the assistant can safely do
When a Mailtrap request fails with a permission or rate-limit error

Tools it uses

list-sandbox-projects
create-sandbox-project
delete-sandbox-project
create-sandbox-inbox
get-sandbox-inbox
update-sandbox-inbox
delete-sandbox-inbox
clean-sandbox-inbox
get-sandbox-messages
show-sandbox-email-message
send-sandbox-email
send-email
list-templates
create-template
update-template
delete-template
list-email-logs
get-email-log-message
get-sending-stats
list-sending-domains
get-sending-domain
create-sending-domain
delete-sending-domain

Example

Send a test of the new welcome email to my QA sandbox inbox and tell me if anything fails.

I'll confirm the account and the sandbox project first. I'd send this with send-sandbox-email to the QA inbox, not live sending, so no real customer gets it. Proposed action: send one test message to the QA inbox. Awaiting your explicit yes to proceed.

Use in RevampKeyRead the full skill →

Read-only2 Mailtrap tools

Check whether a specific email was delivered

Finds one transactional email in your Mailtrap logs and tells you whether it was delivered, bounced, is still retrying, or was never sent. It asks before resending anything.

Use it when

A customer says they never got their password reset
You need to confirm a receipt or invite went out
A bounce needs explaining before you contact the user

Tools it uses

list-email-logs
get-email-log-message

Example

Did the password reset email go to maria.lopez@example.com this morning? She says it never arrived.

Found one reset email to maria.lopez@example.com at 09:14 UTC today. Its status is Bounced (hard) with the reason 'mailbox does not exist', so the address is wrong or the mailbox is gone. Sending it again will not help. Next step: confirm her correct address with her before any new reset is sent.

Use in RevampKeyRead the full skill →

Asks before writing12 Mailtrap tools

Set up and reset a Mailtrap sandbox inbox with AI

Finds or creates the right sandbox project and inbox, sends test emails into it, checks what arrived, and resets it on request. It asks before creating, changing or emptying anything.

Use it when

You are setting up a test inbox for a new staging environment
You want to send test emails and confirm they landed in the sandbox
You need to empty an inbox that is full of old test messages

Tools it uses

list-sandbox-projects
get-sandbox-inbox
send-email
send-sandbox-email
create-sandbox-inbox
update-sandbox-inbox
create-sandbox-project
delete-sandbox-project
delete-sandbox-inbox
get-sandbox-messages
show-sandbox-email-message
clean-sandbox-inbox

Example

Set up a sandbox inbox for our staging build and send a password reset test to it.

Staging already has an inbox called "staging-auth" in the Web project, with 4 messages from last week. I can reuse it, or create a new "staging-auth-2" inbox. Before I send the password reset test, tell me which one to use. I will confirm the send and then check that the reset link points to the staging host.

Use in RevampKeyRead the full skill →

Read-only4 Mailtrap tools

Check Mailtrap sending domain health

Audits your Mailtrap sending domains, reading each domain's state and sending volume trends to flag domains that need attention before mail fails. It asks for your explicit approval before changing any domain.

Use it when

Before a product launch, to confirm every sending domain is ready
When sending volume drops and you need to know whether a domain is the cause
During a periodic deliverability review across all domains

Tools it uses

list-sending-domains
get-sending-domain
get-sending-stats
list-email-logs

Example

Check whether my Mailtrap sending domains are healthy and tell me which one needs attention first.

I reviewed 4 of 4 sending domains over the last 30 days against the prior 30 days. mail.example.com has been sending steadily, while notify.example.com dropped from 12,400 messages to 310 this week and its log stops on the 9th. Verify that your sending integration for notify.example.com was not changed around that date. I have not changed any domain.

Use in RevampKeyRead the full skill →

Asks before writing5 Mailtrap tools

Audit and clean up Mailtrap email templates

Inventories your Mailtrap email templates, flags duplicates, orphans and unclear ones, and proposes updates or deletions. It asks for your explicit approval before changing or removing any template.

Use it when

A template library has grown messy and needs a review
You suspect duplicate welcome or reset emails
You want to know which templates are safe to remove before deleting anything

Tools it uses

list-templates
list-email-logs
get-sending-stats
update-template
delete-template

Example

Audit my Mailtrap templates and tell me which ones I can safely delete.

I inventoried 42 templates across the account. I flagged 3 duplicate welcome variants, 5 orphans named after a 2023 campaign, 2 unclear test templates, and left the other 32 as keepers. Nothing has been changed. Tell me which proposed actions to approve, and I will update or delete only those.

Use in RevampKeyRead the full skill →

Get all 5 without copying a file

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

Download RevampKey

How Mailtrap skills work

Connect Mailtrap
The Mailtrap MCP server gives the agent its tools.
Ask in plain words
“Did the password reset email go to maria.lopez@example.com this morning? She says it never arrived.” 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 Mailtrap skills

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

About 1 minute · nothing to copy

Download RevampKey for Mac, Windows or Linux and sign in.
Open Connectors and connect Mailtrap. 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 “Did the password reset email go to maria.lopez@example.com this morning? She says it never arrived.”
Download RevampKeyConnect Mailtrap · 1 click
Get RevampKey to connect Mailtrap
RevampKey is a free desktop app for Mac, Windows and Linux. Install it, sign in, and Mailtrap is one click away with its skills already attached.
Download RevampKey
Not now? Use the skills in your current tool
for s in essentials email-delivery-check sandbox-testing-setup sending-domain-health template-audit-and-cleanup; do curl -fsSL --create-dirs -o .claude/skills/mailtrap-$s/SKILL.md https://revampkey.com/marketplace/mailtrap/skills/$s/SKILL.md done
Other tools

Into this project’s .claude/skills folder

Connect the Mailtrap MCP server in Claude Code.

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

for s in essentials email-delivery-check sandbox-testing-setup sending-domain-health template-audit-and-cleanup; do
  curl -fsSL --create-dirs -o .claude/skills/mailtrap-$s/SKILL.md https://revampkey.com/marketplace/mailtrap/skills/$s/SKILL.md
done

Ask in plain language, for example “Did the password reset email go to maria.lopez@example.com this morning? She says it never arrived.”

Into the shared .agents/skills folder

Connect the Mailtrap MCP server in Cursor.

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

for s in essentials email-delivery-check sandbox-testing-setup sending-domain-health template-audit-and-cleanup; do
  curl -fsSL --create-dirs -o .agents/skills/mailtrap-$s/SKILL.md https://revampkey.com/marketplace/mailtrap/skills/$s/SKILL.md
done

Ask in plain language, for example “Did the password reset email go to maria.lopez@example.com this morning? She says it never arrived.”

Into the shared .agents/skills folder

Connect the Mailtrap MCP server in Codex.

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

for s in essentials email-delivery-check sandbox-testing-setup sending-domain-health template-audit-and-cleanup; do
  curl -fsSL --create-dirs -o .agents/skills/mailtrap-$s/SKILL.md https://revampkey.com/marketplace/mailtrap/skills/$s/SKILL.md
done

Ask in plain language, for example “Did the password reset email go to maria.lopez@example.com this morning? She says it never arrived.”

Into the shared .agents/skills folder

Connect the Mailtrap MCP server in VS Code.

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

for s in essentials email-delivery-check sandbox-testing-setup sending-domain-health template-audit-and-cleanup; do
  curl -fsSL --create-dirs -o .agents/skills/mailtrap-$s/SKILL.md https://revampkey.com/marketplace/mailtrap/skills/$s/SKILL.md
done

Ask in plain language, for example “Did the password reset email go to maria.lopez@example.com this morning? She says it never arrived.”

RevampKey or copy the files?

In RevampKey

One click when you connect Mailtrap
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 Mailtrap MCP server yourself
Works in Claude Code, Cursor, Codex and VS Code

See the command

Mailtrap skills FAQ

What is a Mailtrap agent skill?

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

Do the Mailtrap 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 Mailtrap.

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 Mailtrap; elsewhere you copy the folders into your project or skills directory.

Do I need the Mailtrap MCP server too?

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

Mailtrap MCP server setup · This page as Markdown

Put Mailtrap’s best workflows in your agent

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

Download RevampKey Connect Mailtrap · 1 click

All 5 Mailtrap skills

Use Mailtrap safely with AI

Use it when

Tools it uses

Check whether a specific email was delivered

Use it when

Tools it uses

Set up and reset a Mailtrap sandbox inbox with AI

Use it when

Tools it uses

Check Mailtrap sending domain health

Use it when

Tools it uses

Audit and clean up Mailtrap email templates

Use it when

Tools it uses

Get all 5 without copying a file

How Mailtrap skills work

How to install Mailtrap skills

RevampKey or copy the files?

In RevampKey

Copy into your project

Mailtrap skills FAQ

Put Mailtrap’s best workflows in your agent

Skills for related tools