email-lifecycle

The saved excerpt is a snapshot from review. The external source remains the complete and most current version.

---
name: email-lifecycle
description: Plan, build, and run lifecycle email programs through the Hyper MCP — welcome / onboarding, nurture, re-engagement, win-back, and abandoned-cart sequences across whichever provider fits (Klaviyo for ecommerce, Resend for SaaS / dev tools, Beehiiv for newsletters, Gmail for low-volume ops). Use when the user wants to build an email sequence, set up a welcome flow, recover lapsed users, send a broadcast, manage a list / audience / segment, or asks about lifecycle / drip / nurture campaigns.
requires_toolkits:
  - klaviyo
icon: klaviyo
short_description: Welcome, nurture, win-back, and cart sequences across Klaviyo, Resend, Beehiiv, and Gmail.
---

# Email Lifecycle

End-to-end lifecycle email — pick the right provider for the job, build the audience, draft the sequence, launch, and measure. Cross-provider patterns at the top; provider-specific tool calls below.

## Out of scope — defer to other skills

| Request | Send them to |
| --- | --- |
| Cold outbound to people who haven't opted in | `cold-email-outreach` |
| Generating images for email creatives | `image-generation` |
| Generating ad creatives that run alongside the lifecycle program | `ad-creative-generation` |
| SEO research / blog content for the newsletter | `seo-research` |

## Requirements

- **Hyper MCP installed and connected.** [https://app.hyperfx.ai/mcp](https://app.hyperfx.ai/mcp)
- **At least one of these providers** connected at [https://app.hyperfx.ai/apps](https://app.hyperfx.ai/apps):
  - **Klaviyo** — ecommerce, Shopify-heavy lists, behavioral triggers off purchase / browse data
  - **Resend** — product-led / SaaS / dev tools, transactional + lifecycle on the same domain
  - **Beehiiv** — newsletters, paid-tier subscriptions, content-driven lists
  - **Gmail** — small / personal lists, founder-mode broadcasts, ops emails

If none of those tool prefixes (`klaviyo_*`, `resend_*`, `beehiiv_*`, `gmail_*`) appear in the agent's tool list, stop and tell the user to enable the Hyper MCP and connect the provider they intend to use.

## Provider selection

The wrong provider is the most common reason a lifecycle program fails. Pick first.

| You are… | Use | Why |
| --- | --- | --- |
| An ecommerce / DTC brand on Shopify, BigCommerce, WooCommerce | **Klaviyo** | Native ecom event listeners (Placed Order, Started Checkout, Browsed Product), mature flow editor, tight Shopify sync. |
| A SaaS / dev tool / API product sending product + lifecycle on the same domain | **Resend** | Same API for transactional + marketing, audience management, broadcasts, automation runs. Excellent deliverability for product mail. |
| Running a content-led newsletter (free + paid tiers) | **Beehiiv** | Built around the newsletter-as-product model — segments, automations, paid tiers, referral program, post stats. |
| Running a small ops list (≤500 contacts), founder-mode broadcasts | **Gmail** | Zero new infra, label-based segmentation, easy templating. Don't scale beyond ~500 — see [`cold-email-outreach`](../cold-email-outreach) for sender deliverability if you do. |

You can run more than one. The pattern is: Klaviyo for marketing, Resend for transactional + product onboarding (when the brand also runs ecom). Or Beehiiv for the newsletter and Resend for the product. Decide once per program, not per email.

## Tool surface

| Phase | Klaviyo | Resend | Beehiiv | Gmail |
| --- | --- | --- | --- | --- |
| Audience setup | `klaviyo_create_list`, `klaviyo_add_member_to_list`, `klaviyo_create_segment`, `klaviyo_create_profile`, `klaviyo_update_profile` | `resend_create_audience`, `resend_create_contact`, `resend_list_contacts`, `resend_update_contact` | `beehiiv_create_subscription`, `beehiiv_create_segment`, `beehiiv_add_tags`, `beehiiv_list_subscriptions` | `gmail_labels_create`, `gmail_labels_add`, `gmail_labels_remove` |
| Sequence build | `klaviyo_create_campaign`, `klaviyo_update_campaign_message` | `resend_create_automation`, `resend_update_automa