Design and write email campaigns and sequences including onboarding flows, lifecycle campaigns, transactional emails, newsletters, broadcast sends, and launch and announcement emails.
SkillScore86Maintained
Automatic
◆Marketing & Content pack
Last verified 8/20/2026
What it changes
Passed 19 of 22 test cases with the skill, and 15 of 22 without it.
Without skill68%
With skill86%
Checks it passed that the model alone missed
The body copy of Email 1 is kept under 100 words.
The re-engagement sequence consists of exactly 3 emails.
The output begins with the header line `# Sequence: [Name]`.
and 6 more in the full report
5 fixed14 passed either way2 still failing1 broke
Pass-rate lift
+18 pp
Tokens
+107%
Agent turns
0%
Response time
-14%
Model gemini-3.6-flashMeasured 8/20/2026v119 of 22 cases passed with skill
Tokens, turns and time describe resource use, not a dollar price.
See it in action
One of 5 test cases the skill fixed. Same model, same prompt, with and without the skill.
1 of 5
Prompt
Our online specialty coffee store wants to win back retail customers who haven't placed an order in the last 3 months. Create a re-engagement flow for this inactive segment. I need the response formatted as a structured sequence breakdown starting with the trigger event, campaign objective, and audience details, followed by each individual message in order. Each message should detail its delivery timing, subject, preheader text, email body, and call to action.
What was checked, without and with the skill
Checked
Without skill
With skill
The output begins with the header line `# Sequence: [Name]`.
Missed
Passed
The metadata section explicitly includes `**Trigger:**`, `**Goal:**`, `**Audience:**`, and `**Length:**` fields.
Missed
Passed
The re-engagement sequence consists of exactly 3 emails.
Missed
Passed
case-01 · gemini-3.6-flash · 8/20/2026 · answers are capped and redacted
What's inside
The instructions your model reads when the skill loads.
SKILL.md274 lines3 files
Email Sequences
Plan and write email campaigns. Sequences (multi-message flows triggered by events) and broadcasts (one-off sends). Stack-agnostic. Works with any email service provider.
When the user wants to create or optimize an email sequence, drip campaign, automated email flow, or lifecycle email program. Also use when the user mentions "email sequence," "drip campaign," "nurture sequence," "onboarding emails," "welcome sequence," "re-engagement emails," "email automation," or "lifecycle emails." For in-app onboarding, see onboarding-cro.