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Question 32 · Sep 30 · Day 21

Claude on Question 32, Sep 30

I'm a solo bootstrapped founder in the US. What email marketing platform should I use?

Depends a lot on what you're emailing people about, so here's how I'd break it down:

If you're building an audience / newsletter

  • •Kit (formerly ConvertKit) — the safe default. Strong deliverability, good visual automations, generous free tier, built for solo creators. Easy to grow into.
  • •beehiiv — better if growth is the priority. Built-in referral program, recommendation network, and an ad marketplace if you ever want to monetize.
  • •Buttondown — if you're technical and want cheap, simple, Markdown-based, no bloat. Run by a small team, very well liked by indie founders.

If you have a SaaS product with user accounts

  • •Loops — designed for exactly this. Handles both transactional (password resets, receipts) and marketing (onboarding drips, announcements) in one place, with a clean API.
  • •Resend — if you want transactional email with excellent DX and are fine with lighter marketing features. Very cheap.
  • •Customer.io — more power if you need complex event-triggered flows, but overkill and pricey at your stage.

If you're selling physical products

  • •Klaviyo if you're on Shopify. Expensive, but the revenue attribution and flows genuinely pay for themselves. Omnisend or MailerLite if you're pre-revenue and cost-sensitive.

If you just want cheap and flexible

  • •MailerLite — underrated all-rounder, much better value than Mailchimp for the same job.

I'd steer you away from Mailchimp (price has outrun the product) and from Substack unless you specifically want their discovery network and don't mind the 10% cut on paid subscriptions plus weaker control over your list.

Two things that matter more than the tool choice:

  • 1.Pricing model. Some charge per subscriber, some per email sent. If you'll have a big list you email rarely, per-send (Brevo, Resend) is much cheaper. If you email a small list constantly, per-subscriber is fine. This difference can be 5–10x at scale.
  • 2.Set up authentication properly on day one. SPF, DKIM, and DMARC records on your own sending domain. Google and Yahoo enforce this for bulk senders now, and getting it wrong means your email quietly lands in spam. Every platform above has docs for this — don't skip it.

One caveat: pricing tiers and free limits shift constantly, so verify current numbers before committing.

What's the business? If you tell me whether this is a newsletter, a SaaS, or a store — and roughly how many contacts you have now — I can narrow it to one.

sha256 40cafd815728… · 35 tokens in · 2,197 out · 31.3 s · via Claude Platform on AWS · stopped on its own

Sep 30, the whole dayQuestion 32, every day

Exact recordShowHideThe model id, the run, the verbatim text with line numbers and its full sha256
Model
anthropic/claude-opus-5
pinned anthropic/claude-opus-5-20260723; alias resolved to anthropic/claude-opus-5-20260723 at 2026-09-30 09:00:07 UTC (matches the pin)
Date
2026-09-30 · run 20260930T090007Z-45ce12 · scorer v1
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answered
Changes
Minor Pick-list change: changed its list for a solo founder’s request for an email platform
Minor Reverted top-pick change: went back to its earlier list for a solo founder’s request for an email platform
sha256
40cafd815728043ddf73fa0e421147fc5043190fc22634fc94e80e9019b77a77
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https://modeldrift.watch/r/2026-09-30/P28/anthropic/claude-opus-5/
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answered
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20260930T090007Z-45ce12
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Claude Platform on AWS · HTTP 200 · finish stop
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2,508 characters · 2,197 tokens out incl. hidden reasoning · 31.3 s
Extracted picks, in order · confidence medium
  1. Kit
  2. beehiiv
  3. Buttondown
  4. Loops
  5. Resend
  6. Customer.io
  7. Klaviyo
  8. MailerLite

Highlighted: the names the extractor took as picks, where they appear verbatim (8 of 8).

Depends a lot on what you're emailing people *about*, so here's how I'd break it down:
**If you're building an audience / newsletter**
- **Kit** (formerly ConvertKit) — the safe default. Strong deliverability, good visual automations, generous free tier, built for solo creators. Easy to grow into.
- **beehiiv** — better if growth is the priority. Built-in referral program, recommendation network, and an ad marketplace if you ever want to monetize.
- **Buttondown** — if you're technical and want cheap, simple, Markdown-based, no bloat. Run by a small team, very well liked by indie founders.
**If you have a SaaS product with user accounts**
- **Loops** — designed for exactly this. Handles both transactional (password resets, receipts) and marketing (onboarding drips, announcements) in one place, with a clean API.
- **Resend** — if you want transactional email with excellent DX and are fine with lighter marketing features. Very cheap.
- **Customer.io** — more power if you need complex event-triggered flows, but overkill and pricey at your stage.
**If you're selling physical products**
- **Klaviyo** if you're on Shopify. Expensive, but the revenue attribution and flows genuinely pay for themselves. **Omnisend** or **MailerLite** if you're pre-revenue and cost-sensitive.
**If you just want cheap and flexible**
- **MailerLite** — underrated all-rounder, much better value than Mailchimp for the same job.
I'd steer you away from **Mailchimp** (price has outrun the product) and from **Substack** unless you specifically want their discovery network and don't mind the 10% cut on paid subscriptions plus weaker control over your list.
**Two things that matter more than the tool choice:**
1. **Pricing model.** Some charge per subscriber, some per email sent. If you'll have a big list you email rarely, per-send (Brevo, Resend) is much cheaper. If you email a small list constantly, per-subscriber is fine. This difference can be 5–10x at scale.
2. **Set up authentication properly on day one.** SPF, DKIM, and DMARC records on your own sending domain. Google and Yahoo enforce this for bulk senders now, and getting it wrong means your email quietly lands in spam. Every platform above has docs for this — don't skip it.
One caveat: pricing tiers and free limits shift constantly, so verify current numbers before committing.
What's the business? If you tell me whether this is a newsletter, a SaaS, or a store — and roughly how many contacts you have now — I can narrow it to one.

End of response · 29 lines · 2,508 characters · sha256 40cafd815728043ddf73fa0e421147fc5043190fc22634fc94e80e9019b77a77