Test with Inbox Preview

Use Inbox Preview to quickly see what your campaign will look like in different email clients and mobile devices, without leaving the Campaign Builder.

A limited number of email clients and mobile devices are available for preview, so if you don't see the particular email client or mobile device you want to preview, send a test email. This will help you get the best idea of how your campaign will display in certain inboxes.

In this article, you'll learn how to use Inbox Preview.

Before You Start

Here are some things to know before you begin this process.

  • The Inbox Preview tool is a paid feature that shows how your campaign might look in different email clients. MailChimp Pro accounts recieve 1,000 free Inbox Preview tokens each billing cycle, and Monthly accounts receive 25 free Inbox Preview tokens each biling cycle. All accounts can purchase Inbox Preview tokens in  Preview Mode.  
  • Both Inbox Preview and Preview Mode are accessible in the Campaign Builder and the Template Builder. The Inbox Preview top client feature is not available in the Template Builder.

About Inbox Preview

Inbox Preview is a Litmus-powered tool available in Preview Mode. Use it to see campaign screenshots from many different mobile and desktop email clients, like Apple Mail 7, Gmail in Chrome, or Outlook 2011. Test all email clients or just a few, and we'll deliver the results in Preview Mode. Inbox Preview also includes a color blind view, so you can see how your campaign should appear to color blind subscribers.

Why use it?

Every email client displays HTML a little differently. A campaign that looks perfect in Gmail might look different in Outlook 2002.

In your campaign's Inbox Preview, we'll let you know which email clients are the most popular for your list. Before you send your campaign, use Inbox Preview to avoid unpleasant surprises, and adapt your designs to work best with your list's top email clients.

How much does it cost?

Inbox Preview uses a token system. Each time you successfully create or update a preview, the cost is one token. For example, if you run an Inbox Preview for Outlook 2011, Gmail, and Apple Mail 7, the cost is three tokens.

All users can purchase Inbox Preview tokens in 25-token bundles for $3 per bundle. Each billing cycle, MailChimp Pro accounts receive 1,000 free tokens, and Monthly Plan users receive 25 free tokens. 

Unused tokens expire at the end of each billing cycle and the free token balance resets on the billing cycle renewal date. Users with valid billing information can purchase additional tokens as needed.

How do I buy more tokens?

To purchase additional Inbox Preview tokens, follow these steps.

  1. Navigate to the Design step in the Campaign Builder.
  2. Click the Preview and Test drop-down menu, and choose Enter preview mode.
  3. In Preview Mode, click the Inbox tab.
  4. Click the Tokens header.
    Cursore clicks the tokens header.
  5. Click the box containing the number of tokens you want to purchase.
    Screenshot of buy more tokens menu.
  6. Click Purchase Tokens.
    Cursor clicks purchase tokens button.

What email clients or devices are available?




Apple Mail 7 iPad AOL (Chrome)
Apple Mail 8 iPad Mini Gmail (Chrome)
Outlook 2000 iPhone 5S G Suite(Chrome)
Outlook 2002 iPhone 6 Office365 (Chrome)
Outlook 2003 iPhone 6 Plus outlook.com (Chrome)
Outlook 2007 Android (latest) Yahoo (Chrome)
Outlook 2010 Android Gmail AOL (Firefox)
Outlook 2011   Gmail (Firefox)
Outlook 2013   G Suite (Firefox)
Outlook 2015   Office 365 (Firefox)
Notes 7   outlook.com (Firefox)
Notes 8   Yahoo (Firefox)
Notes 8.5   AOL (IE)
Notes 9   Gmail (IE)
Thunderbird   G Suite (IE)
    Office 365 (IE)
    outlook.com (IE)
    Yahoo (IE)
    color blind view


Run an Inbox Preview

To run an Inbox Preview on your campaign, follow these steps.

  1. Navigate to the Design step of the Campaign Builder.
  2. Click the Preview and Test drop-down menu, and choose Enter preview mode.
  3. In Preview Mode, click the Inbox tab.
  4. Click Get Started.
  5. In the Choose clients pane, check the boxes next to the names of the email clients you want to preview. Each email client you choose will cost one token per preview.
    click boxes to choose clients
    When you run an Inbox Preview in a campaign for the first time, we'll choose the 10 most popular email clients across MailChimp. If you've previously sent to your list, click Top Client usage from your list to view your subscribers' preferred email clients.
  6. After you choose the email clients you want to preview, click the  Add Clients button.
    click add clients
    It may take a minute for your Inbox Preview to load. We'll display a processing icon next to previews that are in progress.
  7. Click an email client to view its preview.
  8. When you're done reviewing your previews, click X in the upper-right corner to exit Preview Mode.
  9. Fix any issues you saw with your campaign and run an Inbox Preview update to make sure your campaign looks the way you want. When you're done, continue through the Campaign Builder.

Update an Inbox Preview

Run an update to refresh Inbox Previews of your draft campaign in various email clients. Each email client you update will cost one token per preview.

To update an Inbox Preview, follow these steps.

  1. Navigate to the Design step of the Campaign Builder.
  2. Click the Preview and Test drop-down menu, and choose Enter preview mode.
  3. In Preview Mode, click the Inbox tab to open Inbox Preview.
  4. Check the the box next to the names of any email clients that you want to see updated previews for.
    A screenshot of choosing an email client to update.
  5. To refresh the previews, click Update.
    A screenshot of updating several Inbox Previews at once.
  6. After your update loads, click an email client to view its updated preview. To see what the preview for an email client looked like before you updated it, click View history.

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