Stripe Projects
fossasia/eventyay
A skill your agent uses when the user wants to provision infrastructure or third-party services using Stripe Projects.
Configure or troubleshoot Mailtrap live email sending with Email API, SMTP, transactional streams, bulk streams, or batches.
Install Mailtrap Sending Emails
$ npx skills add sickn33/agentic-awesome-skills --skill mailtrap-sending-emails -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install sickn33/agentic-awesome-skills mailtrap-sending-emails --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/sickn33/agentic-awesome-skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/mailtrap-sending-emails .claude/skills/mailtrap-sending-emails && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "mailtrap-sending-emails" agent skill from https://github.com/sickn33/agentic-awesome-skills/tree/main/skills/mailtrap-sending-emails into .claude/skills/mailtrap-sending-emails/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "mailtrap-sending-emails", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/sickn33/agentic-awesome-skills/tree/main/skills/mailtrap-sending-emailsType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add sickn33/agentic-awesome-skills --skill mailtrap-sending-emails -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install sickn33/agentic-awesome-skills mailtrap-sending-emails --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/sickn33/agentic-awesome-skills.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/mailtrap-sending-emails .agents/skills/mailtrap-sending-emails && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "mailtrap-sending-emails" agent skill from https://github.com/sickn33/agentic-awesome-skills/tree/main/skills/mailtrap-sending-emails into .agents/skills/mailtrap-sending-emails/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "mailtrap-sending-emails", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add sickn33/agentic-awesome-skills --skill mailtrap-sending-emails -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install sickn33/agentic-awesome-skills mailtrap-sending-emails --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/sickn33/agentic-awesome-skills.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/mailtrap-sending-emails .cursor/skills/mailtrap-sending-emails && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "mailtrap-sending-emails" agent skill from https://github.com/sickn33/agentic-awesome-skills/tree/main/skills/mailtrap-sending-emails into .cursor/skills/mailtrap-sending-emails/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "mailtrap-sending-emails", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/sickn33/agentic-awesome-skills.git --path skills/mailtrap-sending-emails--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add sickn33/agentic-awesome-skills --skill mailtrap-sending-emails -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install sickn33/agentic-awesome-skills mailtrap-sending-emails --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/sickn33/agentic-awesome-skills.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/mailtrap-sending-emails .gemini/skills/mailtrap-sending-emails && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "mailtrap-sending-emails" agent skill from https://github.com/sickn33/agentic-awesome-skills/tree/main/skills/mailtrap-sending-emails into .gemini/skills/mailtrap-sending-emails/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "mailtrap-sending-emails", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install sickn33/agentic-awesome-skills mailtrap-sending-emailsInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add sickn33/agentic-awesome-skills --skill mailtrap-sending-emails -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/sickn33/agentic-awesome-skills.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/mailtrap-sending-emails .github/skills/mailtrap-sending-emails && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "mailtrap-sending-emails" agent skill from https://github.com/sickn33/agentic-awesome-skills/tree/main/skills/mailtrap-sending-emails into .github/skills/mailtrap-sending-emails/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "mailtrap-sending-emails", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add sickn33/agentic-awesome-skills --skill mailtrap-sending-emails -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install sickn33/agentic-awesome-skills mailtrap-sending-emails --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/sickn33/agentic-awesome-skills.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/mailtrap-sending-emails .opencode/skills/mailtrap-sending-emails && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "mailtrap-sending-emails" agent skill from https://github.com/sickn33/agentic-awesome-skills/tree/main/skills/mailtrap-sending-emails into .opencode/skills/mailtrap-sending-emails/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "mailtrap-sending-emails", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
mailtrap-sending-emails- GitHub stars
- 47k
- Used in
- 1 other repo
- Token cost
- ~2.8k tokens
- SKILL.md length
- 803 words
- Files
- 1
- Skills in repo
- 1,497
- Repo updated
- First seen
- Licence
- MIT
At a glance
Configure or troubleshoot Mailtrap live email sending with Email API, SMTP, transactional streams, bulk streams, or batches.
- Works in 4 steps: Plugin or integration for the user's… → Official SDK for your language when one… → HTTP Email API when there is no SDK or… → …
- Tasks that involve Transactional email
- SKILL.md covers Overview, When to Use, How to integrate (preference… and Choosing how to send, plus 5 more sections
- Calls curl; reaches send.api.mailtrap.io and bulk.api.mailtrap.io; needs MAILTRAP_API_TOKEN
What it does
Mailtrap Sending Emails is an agent skill from sickn33/agentic-awesome-skills. Configure or troubleshoot Mailtrap live email sending with Email API, SMTP, transactional streams, bulk streams, or batches.
Its SKILL.md is about 2.8k tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.
It sits in Backend & APIs, covering Transactional email. The repository describes itself as: AAS Core is the local, agent-first control plane for complete catalog discovery, agent-owned selection, stack validation, and planning, backed by 2,400+ agentic skills. Includes… The licence is MIT.
When your agent uses it
- Tasks that involve Transactional email
Example prompts
- “/mailtrap-sending-emails”
Requirements
- Node.js
- A credential in MAILTRAP_API_TOKEN
Workflow steps
4 steps, taken from the first numbered list in SKILL.md.
- Plugin or integration for the user's platform (no-code or minimal-config) where available
- Official SDK for your language when one exists (maintained clients, typed helpers, less room for URL/auth mistakes).
- HTTP Email API when there is no SDK or the SDK does not fit (direct POST to /api/send or /api/batch with JSON).
- SMTP only when you really need it (legacy stack, host/platform that only speaks SMTP, or hard constraints that rule out HTTP).
What it can do on your machine
Read from SKILL.md and the folder at commit b84d35a. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
Shell commands in SKILL.md call:
curl
From the folder's file list and the shell code blocks in SKILL.md.
Network
Hosts in commands or code, which the agent is likely to contact:
send.api.mailtrap.iobulk.api.mailtrap.io
Also links to:
github.comdocs.mailtrap.io
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names these keys or tokens, usually read from environment variables:
MAILTRAP_API_TOKEN
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
Mailtrap Sending Emails loads about 2.8k tokens when it runs. Until then it costs about 37 tokens; SKILL.md has 803 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
Safety
Auto-check passed
The automated check found no risky patterns in SKILL.md.
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.
SKILL.md
The full file from sickn33/agentic-awesome-skills at commit b84d35a, republished under its MIT licence (© sickn33). 803 words, ~2,806 tokens.
Download SKILL.mdSave it as
.claude/skills/mailtrap-sending-emails/SKILL.md (or your agent's skills folder).- name
- mailtrap-sending-emails
- description
- Configure or troubleshoot Mailtrap live email sending with Email API, SMTP, transactional streams, bulk streams, or batches.
- risk
- critical
- source
- community
- date_added
- 2026-06-19
Sending emails (Mailtrap)
Overview
Mailtrap sends live email over Email API (REST) or SMTP. Two streams apply for API/SMTP: Transactional (non-promotional, app-generated) and Bulk (promotional / marketing volume). Batch is not a third stream: it is how you submit many messages in one request on whichever stream matches the content. Campaigns are a separate product path for promotional mail to Mailtrap contacts. Pair this sheet with the Transactional / Bulk developer pages when building or debugging integrations (including with AI-assisted coding).
When to Use
Use when integrating, configuring, or troubleshooting Mailtrap live email sending with Email API, SMTP, transactional streams, bulk streams, or batch requests.
How to integrate (preference order)
Preferred order:
- Plugin or integration for the user's platform (no-code or minimal-config) where available
- Official SDK for your language when one exists (maintained clients, typed helpers, less room for URL/auth mistakes).
- HTTP Email API when there is no SDK or the SDK does not fit (direct
POSTto/api/sendor/api/batchwith JSON). - SMTP only when you really need it (legacy stack, host/platform that only speaks SMTP, or hard constraints that rule out HTTP).
Choosing how to send
| Approach | Use when |
|---|---|
| Transactional, single message | Email generated by your app (password resets, receipts, notifications, alerts). One logical message per POST https://send.api.mailtrap.io/api/send |
| Bulk | Promotional email to contacts that you manage on your side and send at volume through Mailtrap. Not the same as "batch": bulk is the stream, not the batch endpoint. |
| Batch | You have multiple different messages to hand off at the same time (up to 500 per request). Cuts HTTP overhead; can be applied to both transactional and bulk |
| Campaigns | Promotional email to recipients stored as Mailtrap contacts, using Mailtrap Campaigns (audiences, scheduling, reporting in the product). Recommended to avoid implementing contact management and email sending logic; requires UI setup before sends flow—this skill does not replace that workflow. |
Before generating SDK code: read the README of the relevant SDK repository linked in the SDKs section below for current method signatures, constructor options, and examples. Do not rely on memory.
Related skills: mailtrap-testing-with-sandbox (safe testing) and mailtrap-setting-up-sending-domain (verification before send).
When not to use
- Sandbox only—capturing mail without delivery, reading messages in a sandbox (
mailtrap-testing-with-sandbox). - The main ask is webhooks, step-by-step Campaigns UI setup, or deliverability deep-dives.
- Exhaustive API reference—once the user's path is clear, link the official send docs for full schemas, optional fields, and edge cases.
Quick reference
Email API
| Stream | Send Endpoint | Batch Endpoint | Authorization Header |
|---|---|---|---|
| Transactional | POST https://send.api.mailtrap.io/api/send | POST https://send.api.mailtrap.io/api/batch | Authorization: Bearer $MAILTRAP_API_TOKEN |
| Bulk (promotional / marketing volume) | POST https://bulk.api.mailtrap.io/api/send | POST https://bulk.api.mailtrap.io/api/batch | Authorization: Bearer $MAILTRAP_API_TOKEN |
SMTP
| Setting | Transactional | Bulk |
|---|---|---|
| Host | live.smtp.mailtrap.io | bulk.smtp.mailtrap.io |
| Port | 587 (also 25, 2525, 465 with SSL) | 587 (also 25, 2525, 465 with SSL) |
| Username | api | api |
| Password | API token ($MAILTRAP_API_TOKEN) | API token ($MAILTRAP_API_TOKEN) |
Show full SKILL.md (341 more words)Show less
Tokens
Use $MAILTRAP_API_TOKEN in either Authorization: Bearer ... or Api-Token: .... The same token works on both send.api.mailtrap.io and bulk.api.mailtrap.io as long as its scope covers the stream. Store tokens in environment variables or a secrets manager and rotate them when access changes.
Rate limits
| Scope | Limit | Window |
|---|---|---|
| Sending API (per token) | 150 requests | 10 seconds |
Use backoff on 429.
JSON body (non-template)
Typical fields include from, to, subject, and text and/or html. Optional: category, custom_variables. Exact request bodies: Transactional send and Bulk send.
Examples (curl)
Transactional send (send.api.mailtrap.io):
curl -X POST https://send.api.mailtrap.io/api/send \
-H "Authorization: Bearer $MAILTRAP_API_TOKEN" \
-H "Content-Type: application/json" \
-d '{
"from": {"email": "hello@yourdomain.com", "name": "Your App"},
"to": [{"email": "user@example.com"}],
"subject": "Hello",
"text": "Plain text body"
}'Bulk stream uses the same path and JSON shape on the bulk host (same env var; the token only needs bulk-stream scope):
curl -X POST https://bulk.api.mailtrap.io/api/send \
-H "Authorization: Bearer $MAILTRAP_API_TOKEN" \
-H "Content-Type: application/json" \
-d '{
"from": {"email": "hello@yourdomain.com", "name": "Your App"},
"to": [{"email": "user@example.com"}],
"subject": "Promotional",
"html": "<p>HTML body</p>"
}'Batch (array of messages; up to 500 per request — see API docs for full schema):
curl -X POST https://send.api.mailtrap.io/api/batch \
-H "Authorization: Bearer $MAILTRAP_API_TOKEN" \
-H "Content-Type: application/json" \
-d '{"messages":[{"from":{"email":"a@example.com"},"to":[{"email":"b@example.com"}],"subject":"One","text":"..."}]}'JSON body (template)
Use template_uuid and template_variables instead of raw text/html to use a template hosted by Mailtrap. Minimal example:
curl -X POST https://send.api.mailtrap.io/api/send \
-H "Authorization: Bearer $MAILTRAP_API_TOKEN" \
-H "Content-Type: application/json" \
-d '{
"from": {"email": "hello@yourdomain.com", "name": "Your App"},
"to": [{"email": "user@example.com"}],
"template_uuid": "your-template-uuid",
"template_variables": {"user_name": "Jane"}
}'Use the same API operations as non-template sends.
SDKs
Suppressions
Mailtrap automatically manages suppressions for addresses that hard bounce, report spam, or unsubscribe, and will not send emails to these suppressed recipients again. For details, see the Suppressions documentation.
Common mistakes
| Mistake | Fix |
|---|---|
| Confusing batch with bulk | Batch = many messages in one /api/batch request. Bulk = promotional stream/host and token |
| Promotional API mail on transactional host | Use bulk base URL and bulk token for promotional content you generate in code |
Bulk traffic on send.api.mailtrap.io | Promotional/bulk stream uses bulk.api.mailtrap.io |
| Using sandbox SMTP host for live sending | Live sending uses live.smtp.mailtrap.io or bulk.smtp.mailtrap.io |
| SMTP username is an email address | Username is api; password is the API token |
| Sending before domain is verified | Complete Sending Domains setup and compliance (see mailtrap-setting-up-sending-domain) |
| Guessing SDK API from memory | Read the SDK README and OpenAPI-linked examples; do not invent constructors or method names |
| Choosing SMTP first for a greenfield app | Prefer platform integration if one exists, then SDK, then HTTP API; SMTP only when necessary (see How to integrate) |
Limitations
- This skill summarizes Mailtrap sending choices; use Mailtrap's current API docs for exhaustive schemas and product limits.
© sickn33, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
Just SKILL.md in skills/mailtrap-sending-emails of sickn33/agentic-awesome-skills.
Open the folder on GitHubat commit b84d35a
Used in 1 other repository
We found 5 copies of this SKILL.md (exact, near-identical or edited) in other folders, from 1 other GitHub owner. This page covers the copy in sickn33/agentic-awesome-skills, which our catalogue first saw on October 7, 2026.
Compare with similar skills
Mailtrap Sending Emails next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Mailtrap Sending Emails this skillsickn33/agentic-awesome-skills | 47k | 1 repos | ~2.8k | Automated safety check: Pass | MIT | |
| Stripe Projectsfossasia/eventyay | 1.7k | 5 repos | ~2k | Automated safety check: Notes | Apache-2.0 | |
| WooCommerce Email Editor Developmentwoocommerce/woocommerce | 11k | — | ~893 | Automated safety check: Pass | Custom licence | |
| Email Best Practicesviclafouch/meme-studio | 110 | 7 repos | ~787 | Automated safety check: Pass | None | |
| React Emailviclafouch/meme-studio | 110 | 2 repos | ~3.6k | Automated safety check: Pass | MIT | |
| Pinme Emailglitternetwork/pinme | 3.8k | — | ~1.2k | Automated safety check: Pass | MIT |
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Categories
Questions about Mailtrap Sending Emails
What does Mailtrap Sending Emails do?
Configure or troubleshoot Mailtrap live email sending with Email API, SMTP, transactional streams, bulk streams, or batches. Mailtrap Sending Emails is an agent skill from sickn33/agentic-awesome-skills. Configure or troubleshoot Mailtrap live email sending with Email API, SMTP, transactional streams, bulk streams, or batches.
When should I use Mailtrap Sending Emails?
Mailtrap Sending Emails fits situations like: tasks that involve Transactional email.
How do I install Mailtrap Sending Emails in Claude Code?
Run `npx skills add sickn33/agentic-awesome-skills --skill mailtrap-sending-emails -a claude-code`. Or copy the skill folder (skills/mailtrap-sending-emails in sickn33/agentic-awesome-skills) into .claude/skills/mailtrap-sending-emails in your project. Claude Code loads it when a task matches its description.
How do I install Mailtrap Sending Emails in Codex?
Run `npx skills add sickn33/agentic-awesome-skills --skill mailtrap-sending-emails -a codex`. Or copy the skill folder (skills/mailtrap-sending-emails in sickn33/agentic-awesome-skills) into .agents/skills/mailtrap-sending-emails in your project. Codex loads it when a task matches its description.
Can I use Mailtrap Sending Emails in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add sickn33/agentic-awesome-skills --skill mailtrap-sending-emails -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/mailtrap-sending-emails, .gemini/skills/mailtrap-sending-emails, .github/skills/mailtrap-sending-emails and .opencode/skills/mailtrap-sending-emails in your project.
What does Mailtrap Sending Emails need to run?
Going by SKILL.md and its folder, Mailtrap Sending Emails needs the command-line tools its instructions call (curl) and credentials named MAILTRAP_API_TOKEN. Our summary lists: Node.js; A credential in MAILTRAP_API_TOKEN.
Does Mailtrap Sending Emails access the network?
SKILL.md names 4 domains. In commands or code: send.api.mailtrap.io and bulk.api.mailtrap.io; the agent is likely to contact these when it follows the instructions. As links in the text: github.com and docs.mailtrap.io. This is read from the text; nothing was executed.
Is Mailtrap Sending Emails safe to install?
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.
What licence does Mailtrap Sending Emails use?
Mailtrap Sending Emails is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does Mailtrap Sending Emails use?
About 2.8k tokens (SKILL.md is roughly 11k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.
What are the alternatives to Mailtrap Sending Emails?
Skills that share tags, products or a category with Mailtrap Sending Emails: Stripe Projects (fossasia/eventyay, 1.7k stars), WooCommerce Email Editor Development (woocommerce/woocommerce, 11k stars), Email Best Practices (viclafouch/meme-studio, 110 stars) and React Email (viclafouch/meme-studio, 110 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Mailtrap Sending Emails?
sickn33 (a GitHub user) maintains it in sickn33/agentic-awesome-skills, which has 47,405 GitHub stars. The repository holds 1,497 skills in this directory. The repository was last updated on October 9, 2026.
Source: sickn33/agentic-awesome-skills on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.