Marketing & Growth

How to launch an email marketing campaign as Solo Media and Creator Founders

Marketing & GrowthFor Solo Media and Creator Founders3 apps11 steps~22 min to set up

You write the newsletter, record the pod, edit the clips, and somewhere in there you're supposed to send a campaign to 12,000 subscribers that feels personal, tracks who opened it, and ties back to the sponsor deal you negotiated over DMs three weeks ago. Your campaign process looks like this: draft in Beehiiv or ConvertKit, copy sponsor details from a Google Sheet you haven't updated since last month, check whether the last issue hit the 40% open rate you promised the sponsor, dig through Gmail for the brand contact's name, send, then manually update the Sheet with results two days later when you remember. That's three tools, four manual copy-paste steps, and it still doesn't tell you which subscriber segment actually converts on sponsor CTAs.

Build this on Starch → See the apps used

Marketing & GrowthFor Solo Media and Creator Founders3 apps11 steps~22 min to set up

Outcome

What you'll set up

A sponsor-aware email campaign workflow that pulls your deal terms, audience segments, and past open rate data into one place before you write a single word

An automated post-send digest that reports campaign performance — opens, clicks, segment breakdowns — back to you and into your sponsor tracker without manual data entry

A living CRM for brand partners that logs every campaign you've sent them, every open rate you've delivered, and every follow-up you owe them

The Starch recipe

Apps, data, and prompts

The combination of Starch apps, the data sources they pull from, and the prompts you use to drive them.

Apps used

CRM Email Agent Growth Analyst

Data sources & config

Starch syncs your Gmail data on a schedule so the CRM captures full sponsor thread history and the Email Agent has live context for drafting replies. Connect ConvertKit from Starch's integration catalog — the agent queries it live when the Growth Analyst runs its weekly digest. Starch syncs your Stripe data on a schedule to track invoice status per sponsor deal. Notion (your editorial calendar) is connected from Starch's integration catalog and queried live when you're planning which campaigns map to which issue dates.

Prompts to copy

Build me a sponsor CRM with fields for: brand name, contact name and Gmail thread, campaign date, promised open rate, delivered open rate, invoice status from Stripe, and next follow-up date. Pull in my Gmail threads so I can see the full conversation history per sponsor.

Every Monday, pull last week's campaign results from ConvertKit — open rate, click rate, top-clicked link — and cross-reference with my sponsor CRM to flag any sponsors where I delivered below the promised open rate. Email me a summary.

Triage my inbox and surface any unread messages from brands in my sponsor CRM. Draft replies to the ones that are campaign performance check-ins or new sponsorship pitches, and set follow-up reminders for anything I haven't replied to in 5 days.

Run these in Starch → or paste them into your favorite agent

Walkthrough

Step-by-step

1 Connect Gmail — Starch syncs your Gmail data on a schedule, pulling in every thread with a sponsor or brand contact so you have full history without forwarding or copy-pasting.

2 Connect Stripe — Starch syncs your Stripe data on a schedule so invoice status per sponsor deal is always current in your CRM without you logging into another dashboard.

3 Connect ConvertKit (or Mailchimp, ActiveCampaign, or whichever ESP you use) from Starch's integration catalog; the agent queries it live when it needs campaign stats.

4 Open the CRM starter app and tell Starch: 'Add fields for promised open rate, delivered open rate, campaign date, and Stripe invoice status. Pull in my Gmail threads and tag any thread where the subject line contains a brand name from my contact list as a sponsor conversation.'

5 Starch builds the sponsor CRM. Review the schema, add any niche fields you track (e.g., 'exclusivity window,' 'content category'), and tell Starch to adjust — no rebuilding from scratch.

6 Before writing your next campaign, open the CRM and ask: 'Which sponsors have a campaign due in the next 14 days, and what open rate did I deliver on their last two campaigns?' Get the answer in seconds, not after checking a Sheet.

7 Draft your campaign copy in Beehiiv or ConvertKit as normal — Starch isn't replacing your ESP's editor. But use the Email Agent to draft the sponsor confirmation email: 'Draft a reply to [brand contact] confirming next Tuesday's send, the placement details, and the 42% average open rate I've delivered them over the last three campaigns.'

8 After your campaign sends, the Growth Analyst automation runs: it queries ConvertKit live for open rate, click rate, and top-clicked link, then writes those results back to the sponsor's CRM record and emails you a one-paragraph summary.

9 If open rate came in below your promised floor, the Growth Analyst flags it in the digest and the Email Agent drafts a proactive note to the sponsor — you review and send with one click.

10 At the end of each month, ask your CRM: 'Show me all sponsors with unpaid Stripe invoices older than 14 days and draft a polite follow-up email for each one.' Starch cross-references Stripe and Gmail, drafts the emails, and queues them for your review.

11 Publish your own version of the sponsor CRM app to the Starch marketplace if you want — other creator founders running the same workflow can install it and customize it for their stack.

See this running on Starch

Connect your tools, describe what you want, and the agent builds it. Closed beta is free.

Try it on Starch →

Worked example

April 2026 Sponsorship Campaign — 'The Riff' Newsletter (14,200 subscribers)

Sample numbers from a real run

AG1 (Athletic Greens) — April Issue #1 sponsor	3,200
Riverside.fm — April Issue #3 sponsor	2,800
AG1 — delivered open rate	44
Riverside.fm — delivered open rate	38
Promised open rate floor (both deals)	40
Riverside.fm make-good credit owed	700

Before sending Issue #3 to 14,200 subscribers, you open your Starch sponsor CRM and ask it what you promised Riverside.fm. It surfaces the DM thread from February, the 40% open rate floor you committed to, and the fact that AG1's campaign in Issue #1 hit 44% — a useful data point to mention in your pre-send confirmation email. The Email Agent drafts that confirmation in under a minute. Issue #3 goes out; open rate comes in at 38%. The Growth Analyst's Monday digest flags the shortfall automatically: 'Riverside.fm campaign delivered 38% against a 40% floor — $700 make-good credit may be owed per your February agreement.' The Email Agent drafts a note to your Riverside contact acknowledging it and proposing a bonus placement in Issue #5. You review, tweak one sentence, send. The make-good is logged back to the CRM record. Stripe shows the $2,800 invoice is still unpaid — the automated follow-up reminder fires at day 14, draft already written. Total active time spent on sponsor ops for two campaigns: about 40 minutes, down from most of a day.

Measurement

How you'll know it's working

Delivered open rate vs. promised open rate per sponsor (tracked per campaign in your CRM)

Days from campaign send to sponsor invoice paid (Stripe data synced into CRM)

Sponsor follow-up response rate and average days to close a new deal (Gmail thread history in CRM)

Subscriber segment click-through rate on sponsor CTAs vs. editorial links (ConvertKit queried live by Growth Analyst)

Make-good credits owed vs. cleared across active sponsor deals (flagged automatically by Growth Analyst digest)

Comparison

What this replaces

The other ways teams handle this today, and how the Starch version compares.

Beehiiv + a Google Sheet sponsor tracker

Beehiiv is a better email editor and publisher; it doesn't connect to your Gmail thread history, Stripe invoices, or past campaign data, so your sponsor tracker is always one manual update behind.

ConvertKit + Notion CRM

ConvertKit handles list segmentation well, and Notion is flexible, but you're still manually copying open rates into Notion after every send — there's no live data bridge between the two.

HubSpot Sales Starter

HubSpot has deep email tracking but it's built for B2B sales teams, costs $15–$90/month per seat, requires meaningful setup time, and doesn't know what a 'promised open rate' or 'make-good credit' is without custom fields and admin configuration.

Mailchimp

Mailchimp covers the send layer fine but has no sponsor management concept, no Stripe invoice awareness, and its reporting doesn't surface the specific segment-level numbers you'd quote to a brand partner.

Zapier + Airtable sponsor tracker

Zapier can move data between ConvertKit and Airtable on a trigger, but you're building and maintaining the Zaps yourself, and Airtable still can't draft your sponsor emails or flag below-floor open rates without additional tooling.

On Starch RECOMMENDED

One platform — crm, email agent, growth analyst all running on connected data. Setup in plain English; numbers stay current via scheduled syncs and live agent queries.

Try it on Starch →

FAQ

Frequently asked questions

I use Beehiiv, not ConvertKit. Does this work?

Beehiiv is web-based, so Starch can automate it through your browser — no API needed. You'd use browser automation to pull campaign stats rather than a live integration catalog connection. It works; just tell Starch 'pull my last campaign's open and click rates from my Beehiiv account' and it navigates the dashboard for you. If you're on ConvertKit, Mailchimp, ActiveCampaign, or Klaviyo, those are all reachable from Starch's integration catalog and queried live.

Will Starch actually send emails on my behalf or does it just draft them?

Both, depending on what you set up. For sponsor follow-ups and post-campaign notes, the Email Agent drafts replies in Gmail that you review and send with one click — you stay in control. For automated reminders (like the day-14 unpaid invoice nudge), you can configure the automation to send directly or to queue drafts for your approval. Your call.

I promised a sponsor a 40% open rate and I'm not sure I can deliver it. Can Starch help me catch that before the campaign goes out?

Yes. Ask your sponsor CRM: 'What's my rolling 30-day average open rate across the last five issues, and which sponsors have a campaign scheduled where that average is below my promised floor?' Starch pulls the ConvertKit data live and cross-references it with your CRM deal terms. You get the answer before the send, not after.

Is my Gmail data stored in Starch? I have sensitive sponsor conversations in there.

Starch syncs Gmail on a schedule and stores message metadata and content in Starch's database to power the CRM thread history and Email Agent features. Starch is not SOC 2 Type II certified today — that's worth knowing if you're handling particularly sensitive brand contracts or NDA-covered conversations. For most newsletter and podcast operators, the productivity gain is worth the tradeoff, but we'd rather you know the honest state of the certification than discover it later.

Can Starch help me repurpose a podcast episode into newsletter content or LinkedIn posts?

Starch can pull a transcript or show notes from a web-based tool through browser automation, and you can build a custom app that takes that content and drafts newsletter sections or social posts from it. Connect LinkedIn from Starch's integration catalog for enrichment; Starch automates posting through your browser — no LinkedIn API needed. It won't replace Descript for editing audio, but the 'transcript in, repurposed content out' workflow is something you can describe in natural language and have Starch build for you.

What if my sponsor tracking needs are really specific — like I track exclusivity windows, content categories, and multi-issue deal structures?

That's exactly what the CRM is built for. Tell Starch: 'Add fields for exclusivity window start and end date, content category (tech, wellness, creator tools), and whether this is a single-issue or multi-issue deal. Flag any active sponsors whose exclusivity window overlaps with a competing brand in my pipeline.' Starch builds the schema around how you actually work, not around how a generic CRM vendor thinks sales pipelines look.