email-warmup SKILL.md skillA
email-warmup from chunkydotdev/email-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add chunkydotdev/email-skills/email-warmup@git:20260330.4128460Pins git:20260330.4128460 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- chunkydotdev/email-skills
- Path
skills/deliverability/email-warmup/SKILL.md- Versions recorded
- 2
- Latest version
- git:20260330.4128460, committed Mar 30, 2026
- First version recorded
- Mar 30, 2026
- Size
- 18,502 bytes
- Repository stars
- 7
- License
- MIT
Ramp sending volume on new domains and IPs. Use when launching a new sending domain, switching providers, moving to a dedicated IP, or resuming sends after a pause.
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
# Email Warmup Gradually ramp sending volume on new domains and IPs so mailbox providers trust you before you need to send at scale. ## When to use this skill - Setting up a new sending domain or subdomain - Switching to a dedicated IP address - Moving to a new email service provider (even with an existing domain) - Resuming sending after a long period of inactivity (30+ days) - Scaling up from low volume to high volume sending - Seeing deferrals, throttling, or spam folder placement on a new domain - An AI agent needs to send email and you haven't established sending history yet ## Related skills - `domain-authentication` - SPF, DKIM, and DMARC must be in place before you start warming up - `sender-reputation` - warmup builds initial reputation; this skill covers maintaining and recovering it - `rate-limiting` - volume controls that protect reputation during and after warmup - `inbox-placement` - factors beyond warmup that determine inbox vs spam - `bounce-handling` - processing delivery failures during warmup without compounding damage --- ## Why warmup matters …
Read the whole file at its exact version.
How to install
mdr add chunkydotdev/email-skills/email-warmup@sha256:6d6b0fda21908b3aThe line at the top of this page pins the label git:20260330.4128460, 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_7zcjhdmzht6otxue)
3 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 2 versions of this file, all committed on Mar 30, 2026. Its first recorded version is graded C and its latest A.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260330.4128460 latest | 2026-03-30 | 4128460 | 18,502 B | A | view · diff |
| git:20260330.038155b | 2026-03-30 | 038155b | 18,283 B | C | 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 (18502 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
chunkydotdev/email-skills · 7 stars · license MIT · pushed 2026-10-04 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_7zcjhdmzht6otxue GET https://markdownregistry.com/api/v1/resolve?ref=chunkydotdev/email-skills/email-warmup GET https://markdownregistry.com/api/v1/blob/6d6b0fda21908b3a805dd0871a1f3efda89b5235b1724efa88e32916cb6d6c9d
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.