Teardowns › Pricing & paywalls › Default effect / status quo bias

Mailchimp preselects a free trial of its Standard plan

Mailchimp · Pricing · Small businesses evaluating email tools · mailchimp.com · captured 16 Oct 2026

Honest nudgeDefault effect / status quo bias Zero-price effect Social proof

Step by step

1
The side card is headed "Standard" with "Try for free / Free for 14 days, then starts at $20/month".
2
That option's radio button is preselected; the alternative, "Save 15% on 10,000+ contacts", isn't.
3
The main headline reads "Try our Standard plan for free!".
4
Under the button: "4.5 ... Based on 33,000+ reviews across G2 · Capterra · TrustRadius".

Prices quoted in dollars ($), exactly as shown on the page we captured. Prices vary by region and change over time.

The psychology

Why it nudges

Mailchimp uses a default: the Standard trial is preselected, so the easiest path is to start that trial. "Free" is underlined in yellow, using the zero-price effect, and the review rating adds social proof. The plan recommender we noted earlier wasn't part of what we checked. Results are not public.

● Strong evidence · More on default effect / status quo bias, with sources →

Context

An email marketing platform selling to small businesses, with prices in US dollars on the page we saw. Standard is likely the plan it wants trials to start on.

Honest nudge or dark pattern?

Honest nudge

Honest nudge as captured: the post-trial price is shown on the card. It would be a dark pattern if the trial converted to paid without clear notice. See deceptive.design/preselection.

Steal this, honestly

Preselect the plan most new users should trial, with the price after the trial on the same card.
Show the review score from third-party sites next to the main button.
Keep the alternative option visible and equally easy to choose.

What to test: Preselected vs no preselection. Measure trial starts, trial-to-paid conversion and downgrades.

Next: run it on your product

Apply this with your agent

Take the steps above into your own flow. The prompt carries this teardown, the honest-vs-dark line and the steps.

You are helping me apply a behavioural-design pattern ethically.

Pattern: Mailchimp: Mailchimp preselects a free trial of its Standard plan
Bias: Default effect / status quo bias: People tend to stick with whatever is preselected or already happening.
Why it nudges: Mailchimp uses a default: the Standard trial is preselected, so the easiest path is to start that trial. "Free" is underlined in yellow, using the zero-price effect, and the review rating adds social proof. The plan recommender we noted earlier wasn't part of what we checked. Results are not public.
Our verdict: Honest nudge. Honest nudge as captured: the post-trial price is shown on the card. It would be a dark pattern if the trial converted to paid without clear notice.
Source page: https://nudgeswipe.com/examples/mailchimp-preselected-free-trial/ (JSON: https://nudgeswipe.com/api/teardowns/mailchimp-preselected-free-trial.json)

Rules: say a brand "uses" a tactic, never that it "worked"; outcomes are not public unless the company published them; no invented uplift estimates; flag mixed evidence. Honest nudge = true, visible, easy to reverse, and in the user's interest. Dark pattern = hides costs, fakes scarcity or popularity, shames, or makes leaving harder than joining. Quote company-published results as "X reports", with the source link, and don’t generalise them. Don’t cite retracted or failed-to-replicate studies as support (e.g. Ariely & Wertenbroch 2002). Don’t state study figures unless they’re on this page or in a source you can link. If an idea crosses the line, link the matching deceptive.design pattern.

Tasks:
1. Ask me for my product, the flow (URL or screenshots) and the goal.
2. Audit where this pattern already appears, or could, in that flow.
3. Propose 2-3 ethical experiments: hypothesis, variant copy or UI, primary metric, and a guardrail metric (refunds, complaints, cancellations).
4. Flag every dark-pattern risk and say how to stay on the honest side.

Open in ChatGPT Open in Claude Open in Grok Open in Cursor

ChatGPT, Claude, Grok and Cursor open with the prompt filled in (it is also copied, in case the prefill doesn't load). Gemini and Codex don't support prefilled links, so the prompt is copied and the app opens; paste it in.

Sources

Our capture of mailchimp.com, 16 Oct 2026
Johnson & Goldstein (2003), Do defaults save lives? Meta-analysis: Jachimowicz et al. (2019). Status quo: Samuelson & Zeckhauser (1988). doi.org/10.1126/science.1091721
deceptive.design: preselection

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