> ## Documentation Index
> Fetch the complete documentation index at: https://docs.vortexiq.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Audience Count, Mailchimp

> Audience Count: total subscribed members across all audiences. The 2,000 free-tier ceiling is the most common silent-failure trigger in Mailchimp.

**Metrics type:** [Key Metrics](/nerve-centre/overview#metrics-types-explained)  •  **Category:** [Email Marketing](/nerve-centre/connectors#connectors-by-type)

> Total subscribed members across all audiences. The 2,000 free-tier ceiling is the most common silent-failure trigger in Mailchimp.

## At a glance

> The total count of subscribed contacts across every audience in the Mailchimp account. Computed as `SUM(stats.member_count)` where status = "subscribed" across `GET /3.0/lists`. **The 2,000-contact ceiling on Mailchimp's free plan is the single most common silent-failure trigger we see, sends quietly stop billing-paused without an obvious dashboard alert.** Audit MC02 fires here. Mailchimp's audience-based model means contacts in multiple audiences count once per audience (not deduped across audiences for billing purposes), this matters when assessing plan cap.

|                                      |                                                                                                                                                                                                                                                                                                                                                                                          |
| ------------------------------------ | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| **What it counts**                   | `SUM(stats.member_count)` for every audience returned by `GET /3.0/lists?fields=lists.id,lists.name,lists.stats.member_count`. Counts only `status: subscribed`. Excludes unsubscribed, cleaned (hard-bounced), and pending contacts.                                                                                                                                                    |
| **API endpoint**                     | Marketing API v3, `GET /3.0/lists`. Real-time read; no caching beyond the 60-second window the engine uses.                                                                                                                                                                                                                                                                              |
| **Audience-based scope**             | Mailchimp organises subscribers in **audiences** (formerly "lists"). Each audience is a separately-counted contact set. **Contacts in multiple audiences are counted multiple times in this card AND in Mailchimp's billing.** This is a hard-learned lesson; merchants who duplicate consumer subscribers into a B2B audience discover their billing tier crosses over without warning. |
| **Channel scope**                    | Email-subscribed contacts. SMS-only subscribers (where Mailchimp Studio is enabled) are tracked separately and NOT pulled here.                                                                                                                                                                                                                                                          |
| **Bounce categorisation**            | Cleaned contacts (Mailchimp's term for hard-bounced auto-suppressed) are excluded. Soft-bounced but not yet auto-suppressed contacts are still in `subscribed` and counted here.                                                                                                                                                                                                         |
| **MPP impact**                       | None on size. MPP affects open rate, not subscriber count.                                                                                                                                                                                                                                                                                                                               |
| **Pending / double opt-in contacts** | Excluded. Mailchimp uses `pending` for double-opt-in awaiting confirmation; only `subscribed` counts here.                                                                                                                                                                                                                                                                               |
| **Free-tier 2,000 cap**              | The free Mailchimp plan caps contacts (across all audiences) at 2,000. **Crossing this cap pauses sends silently**, the dashboard shows a banner but Customer Journey emails and scheduled campaigns simply don't fire. Audit MC02 surfaces this exactly.                                                                                                                                |
| **Currency**                         | Not applicable.                                                                                                                                                                                                                                                                                                                                                                          |
| **Time window**                      | `RT` (real-time, point-in-time read at the moment the card refreshes)                                                                                                                                                                                                                                                                                                                    |
| **Alert trigger**                    | `>2000 on free plan` (audit MC02). Drives the silent-fail prevention alert.                                                                                                                                                                                                                                                                                                              |
| **Roles**                            | owner, marketing                                                                                                                                                                                                                                                                                                                                                                         |

## Calculation

Calculated automatically from your Mailchimp data. See the At a glance summary above for what the metric tracks and the worked example below for a typical reading.

## Worked example

A small DTC sustainable-skincare brand on Mailchimp Standard plan, three audiences, all created over time as the brand grew:

| Audience                                | Subscribed | Cleaned (hard-bounced) | Unsubscribed | Pending |
| --------------------------------------- | ---------- | ---------------------- | ------------ | ------- |
| Main consumer list                      | 14,200     | 480                    | 1,120        | 30      |
| Trade / B2B retailer list               | 380        | 12                     | 22           | 4       |
| Abandoned-cart-only segment-as-audience | 1,840      | 60                     | 95           | 0       |
| **This card (Audience Size)**           | **16,420** |                        |              |         |

Five observations:

1. **Mailchimp bills on 16,420, not on the unique-contact count.** Roughly 1,200 of the abandoned-cart audience are duplicates of the main consumer list (same email address). Mailchimp's billing aggregates across audiences as separate contacts. **The merchant could shrink the bill 7% by collapsing the abandoned-cart audience into a segment of the main list**, no engagement impact, just billing optimisation. This is a classic Mailchimp tax that experienced merchants know to avoid.
2. **Trade list size of 380 contacts looks tiny but isn't.** B2B audiences with high engagement and high per-recipient revenue beat consumer lists 5-10x on revenue per contact. Don't measure "audience health" by size alone, pair with per-audience revenue.
3. **The 2,000 free-tier cap would have hit at month 4 of growth.** Looking back at the merchant's growth curve, they crossed 2,000 around month 4 and would have triggered Audit MC02 at that point. They upgraded to Standard pre-emptively, the alert is for merchants who don't.
4. **Cleaned contact count of 552 across all audiences is healthy.** Cleaned is Mailchimp's permanent suppression bucket (hard bounces, role-based addresses Mailchimp deems unsendable, manual cleans). 3.4% cleaned-rate over the audience lifetime is normal; >10% suggests a list-quality problem and would warrant a re-engagement audit.
5. **Pending count of 34 across all audiences indicates double opt-in is enabled.** Pending = signed up but hasn't clicked the confirm-link yet. If pending stays high (>5% of subscribed), the welcome confirmation email isn't landing in inboxes, check deliverability of the transactional sender.

## Sibling cards merchants should reference together

Audience Size means little without engagement context. Pair with these:

| Card                                                                                                                 | Why pair it with Audience Size                                                                                                                                                                |
| -------------------------------------------------------------------------------------------------------------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| [Mailchimp Audience Growth Rate](/nerve-centre/kpi-cards/mailchimp/audience-growth-rate)                             | The trend view, are subscribers growing, plateauing, or shrinking? Stagnation is the canary for retention problems.                                                                           |
| [Mailchimp Audiences Overview](/nerve-centre/kpi-cards/mailchimp/audiences-overview)                                 | The per-audience split, by-audience health metrics that the blended size hides.                                                                                                               |
| [Mailchimp Suppressed Members](/nerve-centre/kpi-cards/mailchimp/suppressed-cleaned-members)                         | Cleaned + unsubscribed counts. A growing audience with a parallel growing suppression count means churn is accelerating.                                                                      |
| [Mailchimp Email-Attributed Revenue](/nerve-centre/kpi-cards/mailchimp/email-attributed-revenue)                     | Revenue per contact = the efficiency view. A small engaged list often beats a large dormant one.                                                                                              |
| [Mailchimp Open Rate](/nerve-centre/kpi-cards/mailchimp/email-open-rate)                                             | Open rate falls as audience grows because new subscribers dilute the engaged base. Watch them together.                                                                                       |
| [Mailchimp Bounce Rate](/nerve-centre/kpi-cards/mailchimp/bounce-rate)                                               | Larger audiences from low-quality acquisition sources bounce more. Bounces predict deliverability problems.                                                                                   |
| [Shopify / BigCommerce Customer Count](/nerve-centre/kpi-cards/shopify/unique-customers)                             | The denominator for [Audience Coverage of Customer Base](/nerve-centre/kpi-cards/mailchimp/audience-coverage-of-customer-base). Tells you what fraction of buyers you've captured into email. |
| [Mailchimp Audience Coverage of Customer Base](/nerve-centre/kpi-cards/mailchimp/audience-coverage-of-customer-base) | The cross-platform view. Coverage \<70% indicates a missed acquisition opportunity at checkout.                                                                                               |

## Reconciling against the vendor's own dashboard

**Where to look in Mailchimp's own dashboard:**

[Mailchimp → Audience → All Contacts](https://us1.admin.mailchimp.com/audience/) shows a "Total contacts" header which includes subscribed + unsubscribed + cleaned + pending. **That figure does NOT match this card** because this card counts only `subscribed`. The closest direct match is [Audience → All Contacts → filter by Status = Subscribed](https://us1.admin.mailchimp.com/audience/), which should match this card to within a handful of contacts (real-time signups within the last few seconds account for the noise).

For the billing-tier check, the authoritative view is [Account → Billing → Plans](https://us1.admin.mailchimp.com/account/billing/plans/). The contact-count Mailchimp uses for billing is shown there explicitly with the cap.

Other Mailchimp views that *look* like the same number but aren't:

* **Audience Overview homepage**: shows total contacts including unsubscribed and cleaned. Larger than this card.
* **Lists & Audiences → individual audience → Contacts tab**: per-audience subscribed count. Per-audience subset only.
* **Reports → Audience Performance**: aggregated audience growth report, time-windowed. Different shape.

**Why our number may legitimately differ from Mailchimp's dashboard:**

| Reason                                                                                                                                                                                                        | Direction of divergence                               |
| ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ----------------------------------------------------- |
| **Real-time read latency**. Mailchimp dashboard signups can take 30-60 seconds to appear. This card reads with similar timing but the snapshot windows can offset.                                            | ±a few contacts at any moment                         |
| **Audience visibility**. Mailchimp accounts with audience-level access controls (Premium plan) may hide audiences from this card if the API key has restricted scope. Check Account → API Keys → permissions. | This card lower than dashboard if scope is restricted |
| **Account region**. The us1/us2/us3/etc subdomain matters; the engine reads from whichever data centre the account lives in. The dashboard URL above defaults to us1; substitute your actual DC.              | None on the number; URL only                          |
| **Pending vs subscribed transition**. A contact who confirmed double-opt-in 30 seconds ago may show as `pending` in Mailchimp's dashboard for a brief window before flipping to `subscribed`.                 | Up to ±dozens during high-signup periods              |

**Cross-connector reconciliation:**

Audience size is a Mailchimp-internal contact-count. The closest cross-references:

| Card                                                                                 | Expected relationship                                                                                                                                                                    | What causes legitimate divergence                                                                                                                 |
| ------------------------------------------------------------------------------------ | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------- |
| [`shopify.customer_count`](/nerve-centre/kpi-cards/shopify/unique-customers)         | Mailchimp Audience Size is typically 60-120% of Shopify customer count, depending on signup mechanism. Pop-ups and pre-purchase signups drive >100%; checkout-only opt-in drives \<100%. | Customers who unsubscribed but still buy show up in Shopify and not Mailchimp. Subscribers who never bought show up in Mailchimp and not Shopify. |
| [`bigcommerce.customer_count`](/nerve-centre/kpi-cards/bigcommerce/unique-customers) | Same shape.                                                                                                                                                                              | Same reasons.                                                                                                                                     |
| [`klaviyo.profile_count`](/nerve-centre/klaviyo/profile_count)                       | Klaviyo's profile count is typically larger than Mailchimp's audience size on the same store, Klaviyo retains anonymous browser-only profiles that never gave email consent.             | Klaviyo's "active profiles" (consent-given) is a closer match.                                                                                    |

***

<details>
  <summary><em>Documentation cross-reference (for agencies running multiple email platforms)</em></summary>

  Audience/list size exists on every email platform. This is **not** a reconciliation, your Mailchimp account doesn't have a parallel Klaviyo account to compare against. References for cross-doc linking only.

  * [`klaviyo.profile_count`](/nerve-centre/klaviyo/profile_count)
</details>

## Known limitations / merchant FAQs

**What's the difference between a Mailchimp "list" and an "audience"?**
They are the same thing, renamed. Mailchimp rebranded "lists" to "audiences" in 2019. The API endpoint is still `/3.0/lists`; the UI calls them audiences. This card aggregates `member_count` across every audience.

**My audience count looks larger than my actual subscriber count, why?**
Two likely reasons. First, **contacts in multiple audiences are counted multiple times**. If you have a "main list" of 5,000 and a "VIP segment" of 800 set up as a separate audience (rather than a segment of the main list), the 800 VIPs are duplicates and counted twice. Second, **Mailchimp counts all subscribed contacts in audience size including dormant ones**, contacts who haven't opened in 12+ months are still "subscribed" and still counted, both here and on your billing tier.

**I'm on the free plan, what happens when I cross 2,000?**
Mailchimp pauses sends. Customer Journey emails stop firing, scheduled campaigns sit unsent, and the dashboard shows a banner asking you to upgrade. **There is no email alert from Mailchimp warning you, the failure is silent unless you log in.** Audit MC02 surfaces this from the Vortex IQ side. Plan your upgrade ahead of crossing the cap; signup-form-driven growth often lifts you over the cap in a single weekend.

**How do I shrink my audience size without losing engagement?**
Three legitimate cleanup techniques: (a) archive contacts who haven't opened in 180+ days, freeing the slot; (b) collapse duplicate audiences into segments of one master audience (saves the most billing); (c) move SMS-only opt-ins out of email audiences if you've been double-storing.

**Do unsubscribed and cleaned contacts count here?**
**No.** Only `subscribed` is counted. Unsubscribed (opted-out) and cleaned (auto-suppressed hard-bouncers) are excluded. They still count toward Mailchimp's *total* contact count for billing on some plans, check [Account → Billing](https://us1.admin.mailchimp.com/account/billing/plans/) for the authoritative billing figure.

**Why is my Mailchimp audience size smaller than my Shopify customer count?**
Most stores get 50-80% capture: customers can opt out at checkout, and SMS-only or guest checkouts often skip the email-marketing tickbox. Coverage \<70% is normal but improvable, see [Audience Coverage of Customer Base](/nerve-centre/kpi-cards/mailchimp/audience-coverage-of-customer-base). Coverage >100% means you're acquiring email-only subscribers from non-customer sources (lead magnets, popups, social), which is a healthy signal.

**Does this card include subscribers from the e-commerce checkout integration?**
Yes, every contact with `status: subscribed` in any audience counts, regardless of acquisition source (signup form, popup, checkout integration, manual import, API). Mailchimp doesn't separate them at the audience-level count.

**Is the today value volatile for new audiences?**
For established accounts, no, audience size moves slowly (dozens per day for typical SMB stores). For brand-new accounts in their first acquisition push, the figure can move by hundreds per hour. The 60-second engine cache means you'll see lag on hot audiences; refresh after a campaign launch to see real-time growth.

**Can I exclude a specific audience from this card?**
Not from the card itself. The aggregate is total-account. Use [Audiences Overview](/nerve-centre/kpi-cards/mailchimp/audiences-overview) for the per-audience split and exclude audiences from your own analysis manually. Common case: agencies separate "internal staff" or "test" audiences from real subscriber counts.

***

### Tracked live in Vortex IQ Nerve Centre

*Audience Size* is one of hundreds of KPI pulses Vortex IQ tracks across Mailchimp and 70+ other ecommerce connectors. Nerve Centre runs the detection layer; Vortex Mind investigates the cause when something moves; Ask Viq lets you interrogate any number in plain English.

[Start for free](https://app.vortexiq.ai/login) or [book a demo](https://www.vortexiq.ai/contact-us) to see this metric running on your own data.
