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Get Started Free →velcrafting/email-best-practices
Use when building email features, emails going to spam, high bounce rates, setting up SPF/DKIM/DMARC authentication, implementing email capture, ensuring compliance (CAN-SPAM, GDPR, CASL), handling webhooks, retry logic, or deciding transactional vs marketing.
Passed 21 of 22 test cases with the skill, and 18 of 22 without it.
and 1 more in the full report
3 fixed18 passed either way1 still failing0 broke
Tokens, turns and time describe resource use, not a dollar price.
One of 3 test cases the skill fixed. Same model, same prompt, with and without the skill.
We have basic transactional sending working, but want to make our pipeline production-ready to handle high volumes without duplicate sends or lost delivery status. What order of technical features should we implement?
| Checked | Without skill | With skill |
|---|---|---|
| Recommends implementing idempotency and retry mechanisms before setting up webhook tracking | Passed | Passed |
| Places list management and bounce processing after webhook delivery events setup | Missed | Passed |
The instructions your model reads when the skill loads.
Guidance for building deliverable, compliant, user-friendly emails.
[User] → [Email Form] → [Validation] → [Double Opt-In]
↓
[Consent Recorded]
↓
[Suppression Check] ←──────────────[Ready to Send]
↓
[Idempotent Send + Retry] ──────→ [Email API]
↓
[Webhook Events]
↓
┌────────┬────────┬─────────────┐
↓ ↓ ↓ ↓
Delivered Bounced Complained Opened/Clicked
↓ ↓
[Suppression List Updated]
↓
[List Hygiene Jobs]
| Need to... | See |
|---|---|
| Set up SPF/DKIM/DMARC, fix spam issues | Deliverability |
| Build password reset, OTP, confirmations | Transactional Emails |
| Plan which emails your app needs | Transactional Email Catalog |
| Build newsletter signup, validate emails | Email Capture |
| Send newsletters, promotions | Marketing Emails |
| Ensure CAN-SPAM/GDPR/CASL compliance | Compliance |
| Decide transactional vs marketing | Email Types |
| Handle retries, idempotency, errors | Sending Reliability |
| Process delivery events, set up webhooks | Webhooks & Events |
| Manage bounces, complaints, suppression | List Management |
test cases passed, vs 18 / 22 without
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