How do I install the Agentsmtp CLI skill?

Run npx skillmds@latest add sebastianboehler/agentsmtp-cli in your terminal (requires Node.js), paste this page's agent-chat prompt into Claude, Cursor, or any MCP-connected agent, or download the SKILL.md file and copy it into your agent's skills directory.

Is Agentsmtp CLI safe to use?

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Which AI agents work with Agentsmtp CLI?

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Is Agentsmtp CLI free to use?

Yes. Installing skills from SkillMD is free, and the skill stays under its author's original license.

Who published Agentsmtp CLI?

SebastianBoehler (@sebastianboehler) published this skill. Their other Agent Skills are listed on their SkillMD profile.

Agentsmtp CLI by sebastianboehler — Agent Skill

Name: Agentsmtp CLI
Author: SebastianBoehler

Agentsmtp CLI

Send or validate SMTP mail flows with the `agentsmtp` CLI. Use when an agent needs a small SMTP submission tool with provider presets for Gmail or Google Workspace, structured output, and configurable auth through password or app-password.

SebastianBoehler 6d77670 2 files · 2.3 KB Updated Sep 17, 2026

File contents

AgentSMTP CLI

Use agentsmtp when a workflow needs a thin SMTP client instead of a full mail app. The tool resolves provider defaults, loads config from file or environment, and keeps output machine-readable.

Invoke the Tool

Prefer the installed binary when it exists:

agentsmtp profile -provider gmail -from student@gmail.com

If working inside this repository or the binary is not installed, run:

go run ./cmd/agentsmtp -- profile -provider gmail -from student@gmail.com

Choose Commands

Use profile to inspect the resolved SMTP host, port, auth mode, and whether a secret source is configured.
Use test to open an SMTP session, authenticate, and run NOOP without sending mail.
Use send to submit a plain-text message with repeated -to, -cc, and -bcc flags.

Apply Good Defaults

Prefer -provider gmail or -provider google-workspace for Google-hosted mail because the tool fills smtp.gmail.com:587 and STARTTLS.
Keep secrets in -password-env or -password-file rather than inline flags when possible.
Pipe message text over stdin for agent workflows instead of shell-escaping large bodies.
Use -format json for downstream parsing and -format text for quick debugging.

Examples

Inspect a Google Workspace profile:

go run ./cmd/agentsmtp -- profile -provider google-workspace -from student@example.edu -password-env SMTP_PASSWORD -format text

Test Gmail SMTP with an app password:

go run ./cmd/agentsmtp -- test -provider gmail -from student@gmail.com -password-env GMAIL_APP_PASSWORD -format text

Send a plain-text message from stdin:

printf 'Hello from agentsmtp\n' | go run ./cmd/agentsmtp -- send -provider google-workspace -from student@example.edu -password-env SMTP_PASSWORD -to advisor@example.edu -subject "Status"

---name: agentsmtp-clidescription: Send or validate SMTP mail flows with the `agentsmtp` CLI. Use when an agent needs a small SMTP submission tool with provider presets for Gmail or Google Workspace, structured output, and configurable auth through password or app-password.---# AgentSMTP CLIUse `agentsmtp` when a workflow needs a thin SMTP client instead of a full mail app. The tool resolves provider defaults, loads config from file or environment, and keeps output machine-readable.## Invoke the ToolPrefer the installed binary when it exists:```bashagentsmtp profile -provider gmail -from student@gmail.com```If working inside this repository or the binary is not installed, run:```bashgo run ./cmd/agentsmtp -- profile -provider gmail -from student@gmail.com```## Choose Commands- Use `profile` to inspect the resolved SMTP host, port, auth mode, and whether a secret source is configured.- Use `test` to open an SMTP session, authenticate, and run `NOOP` without sending mail.- Use `send` to submit a plain-text message with repeated `-to`, `-cc`, and `-bcc` flags.## Apply Good Defaults- Prefer `-provider gmail` or `-provider google-workspace` for Google-hosted mail because the tool fills `smtp.gmail.com:587` and `STARTTLS`.- Keep secrets in `-password-env` or `-password-file` rather than inline flags when possible.- Pipe message text over stdin for agent workflows instead of shell-escaping large bodies.- Use `-format json` for downstream parsing and `-format text` for quick debugging.## ExamplesInspect a Google Workspace profile:```bashgo run ./cmd/agentsmtp -- profile -provider google-workspace -from student@example.edu -password-env SMTP_PASSWORD -format text```Test Gmail SMTP with an app password:```bashgo run ./cmd/agentsmtp -- test -provider gmail -from student@gmail.com -password-env GMAIL_APP_PASSWORD -format text```Send a plain-text message from stdin:```bashprintf 'Hello from agentsmtp\n' | go run ./cmd/agentsmtp -- send -provider google-workspace -from student@example.edu -password-env SMTP_PASSWORD -to advisor@example.edu -subject "Status"```

Frequently asked questions