sending-platforms SKILL.md skillA
sending-platforms from leadmagic/gtm-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add leadmagic/gtm-skills/sending-platforms@v1.0.0Pins v1.0.0 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- leadmagic/gtm-skills
- Path
skills/outbound/sending-platforms/SKILL.md- Versions recorded
- 6
- Latest version
- v1.0.0, committed Oct 1, 2026
- First version recorded
- Jun 8, 2026
- Size
- 18,432 bytes
- Repository stars
- 76
- License
- MIT
Compares, selects, and configures cold email sending platforms: Smartlead, Instantly, Salesforge, Apollo, and others. Use when the user asks which sending platform to use, needs to compare features or pricing, wants to migrate between platforms, or needs platform-specific setup guidance. Activates on phrases like "which email platform," "Smartlead vs Instantly," "best sending tool," "Salesforge setup," "Apollo sequences," or "migrate sending platform.".
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# Sending Platforms ## Overview Choosing a cold email sending platform is not a feature-comparison exercise. It is a business decision that determines your deliverability ceiling, your workflow efficiency, and your ability to scale. The wrong platform choice costs you thousands of emails that never reach the inbox — and you won't know it until open rates collapse. This skill compares the four major cold email sending platforms — Smartlead, Instantly, Salesforge, and Apollo — across the dimensions that matter: pricing, warmup quality, API access, CRM integration, sequence capabilities, analytics, and deliverability infrastructure. It also covers setup guidance for each platform and a decision matrix for different use cases (solo founder, SDR team, enterprise outbound). The non-obvious rule: the platform with the most features is not the best platform. The best platform is the one with the most reliable inbox placement for YOUR specific sending profile (volume, industry, email provider mix). A platform with excellent Gmail deliverability but poor Outlook deliverability is the wrong choice if 60% of your targets use Outlook. ## When to Use …
Read the whole file at its exact version.
How to install
mdr add leadmagic/gtm-skills/sending-platforms@sha256:5e1ad14f91700305The line at the top of this page pins the label v1.0.0, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_jnq5ja2ieut4po7c)
4 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 6 versions of this file, between Jun 8, 2026 and Oct 1, 2026, about one every 23 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| v1.0.0 latest | 2026-10-01 | ca0d2ec | 18,432 B | A | view · diff |
| v1.0.0 | 2026-09-02 | a19750a | 18,439 B | A | view · diff |
| v1.0.0 | 2026-06-10 | e030e67 | 18,433 B | A | view · diff |
| v1.0.0 | 2026-06-10 | 17b6e1f | 18,357 B | A | view · diff |
| v1.0.0 | 2026-06-10 | 9f00d65 | 18,358 B | A | view · diff |
| v1.0.0 | 2026-06-08 | 07ce0cd | 18,046 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (18432 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
leadmagic/gtm-skills · 76 stars · license MIT · pushed 2026-10-14 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_jnq5ja2ieut4po7c GET https://markdownregistry.com/api/v1/resolve?ref=leadmagic/gtm-skills/sending-platforms GET https://markdownregistry.com/api/v1/blob/5e1ad14f91700305ccd47a573369f2b398a48603b4b4ba8b26df428cda9fdd34
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.