Manage List and Signup Form Fields

Information about contacts is stored in list fields and can be seen in the list view and profile pages. Edit the fields to meet your needs through our Form Builder or through the list settings in your MailChimp account.

In this article, you'll learn about the different fields, how to add and delete fields, and how to add a predefined list field.

List Field Types

There are several field types available to help you collect data when a contact subscribes, or when you import existing data into your list. If you plan to import a list, make sure your data is formatted for our field types.

  • Text
    Contacts provide typed responses. This field type is good for general questions, but character limits for list fields prevent long responses.
  • Number
    Contacts provide any number, like age or an ID number. We recommend you use the Zip Code field for zip codes.
  • Radio Buttons
    Contacts choose only one of a predefined set of options. Use our presets or create your own. This field can be used to create groups.
  • Check Boxes
    Contacts select one or multiple options to select different interests. This field will always create a group in your list.
  • Drop Down
    Contacts choose only one of a predefined set of options. Use our presets or create your own. This field can be used to  create groups. There's no limit to the amount of answers in drop-down or multiple choice fields, with one exception. Checkbox fields function as groups, and there's a sixty group limit for each list.  
  • Date
    Contacts specify a date, including month, day, and year. This field supports U.S. and international date formats.
  • Birthday
    Contacts specify a date, including month and day. Choose from Month/Day or Day/Month format.
  • Address
    Contacts provide their full address, including country.
  • Zip Code
    Contacts provide 5-digit zip codes. Use an Address or Text field to collect international postal codes.
  • Phone
    Contacts provide a local or international phone number.
  • Website
    Contacts provide a full URL. This field type generates the HTML code for a link.
  • Image
    Contacts provide an image URL. This can be used to display their own image or avatar in your campaigns.
  • Language
    This field is included in your list after you enable auto-translate for your signup form. We use it to keep track of your contacts' language preferences.

Add and Delete Fields in the Form Builder

When you add or remove fields from your signup form through our Form Builder, the same fields will be added to or removed from your list database.

Add a Field in the Form Builder

To add a field in the form builder, follow these steps.

  1. Navigate to the Lists page.
  2. Click the drop-down menu next to the list you want to work with and choose Signup forms.
    click signup forms
  3. Select General forms.
    Cursor selects the General forms option.
  4. Under the Build it tab, choose a field type from the add a field menu. The new field's name, tag, and other characteristics can be customized under the field settings menu.
  5. Click Save Field to save your changes and add the field to your form.

Delete a Field in the Form Builder

When you delete a field from the Form Builder, any data that has been collected from that field is also deleted from your list. Back up your list before deleting any fields, or hide fields from appearing on the list and signup form.

To delete a field in the form builder, follow these steps.

  1. Navigate to the Lists page.
  2. Click the drop-down menu next to the list you want to work with and choose Signup forms.
    click signup forms
  3. Select General forms.
    Cursor selects the General forms option.
  4. Click the field you want to delete from your list.
  5. Click the Minus (-) icon or Delete under the field settings for the field.
  6. Type DELETE in all caps, and click Delete.

Add and Delete Fields in the List Settings

When you add or remove fields from the list database, the same fields will be added to or removed from your signup form.

Add a Field in the List Settings

To add a field in the list settings, follow these steps.

  1. Navigate to the Lists page.
  2. Click the drop-down menu next to the list you want to work with, and choose Settings.
    click stats dropdown and choose settings
  3. On the Settings page, click List fields and *|MERGE|* tags.
    Cursor selects list fields and merge tags option.
  4. Click Add A Field to see the available field types and choose the type of field you'd like to add.
  5. Type a name for the field, and click Save.

You can also set default merge tag values in the Default value column.

Delete a Field in the List Settings

When you delete a field from the list database, any data that has been collected from that field is also deleted from your list. Back up your list before deleting any fields, or hide fields from appearing on the list and signup form.

To delete a field in the list settings, follow these steps.

  1. Navigate to the Lists page.
  2. Click the drop-down menu next to the list you want to work with, and choose Settings.
    click stats dropdown and choose settings
  3. On the Settings page, click List fields and *|MERGE|* tags.
    Cursor selects list fields and merge tags option.
  4. Click the Trashcan icon next to the field you want to delete.
    Click X to delete field
  5. Type DELETE in all caps, and click Delete.
    Type DELETE in all caps and select Delete Field

Add a Predefined List Field

If you use our Drop Down or Radio Buttons field types, you can include predefined choices. Predefined choices include gender, days of the week, months of the year, U.S. states, and world countries.

Add a Predefined List Field

To add a predefined list field, follow these steps.

  1. Navigate to the  Lists page.
  2. Click the drop-down menu next to the list you want to work with, and choose Signup forms.
    click signup forms
  3. Select General forms.
    Cursor selects the General forms option.
  4. On the Build it tab, click either Drop Down or Radio Buttons from the add a field menu.
  5. Choose menu options in the field settings and  predefined choice lists menus.
  6. Add, delete, or edit the choices for the field. Use the Plus (+) icon to add an option and the Minus (-) icon to delete an option. Click any entry to make changes.
  7. Change any additional preferences, such as field label and field visibility.
  8. Click Save Field.

Limits for List Fields

  • List field values are limited to a maximum of 255 bytes of information. In many alphabets, this is equal to 255 characters. However, some alphabets or symbolic characters, like stars, use more than one byte of information per character.
  • Labels for form fields are limited to 50 bytes (usually about 50 characters).
  • After you add a field, the field type can't be changed. If you chose the wrong field type, delete the field and add a new field with the correct field type.
  • Lists are limited to a maximum of 30 data fields for each contact. If you want more than 30 fields of information about your contacts, use groups to help consolidate list fields.
  • The data field limit is higher for MailChimp Pro accounts, which can use up to 80 fields in each list. If Pro is disabled, the extra 50 list fields won't be visible.

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