| AI action | One AI suggestion or check, counted against the workspace’s monthly allowance. See Using AI help. |
| Campaign | One email built from a template version: a name, subject, preheader and the modules added to it, with their content. |
| Choice | A field that offers approved options, each setting styles or attributes, such as alignment or a dark style. |
| Colour | A field that sets a hex colour on one or more style properties or attributes. |
| Draft | A template’s working copy, which developers edit. Also the first status of a campaign. |
| Editor | Anyone who builds templates or campaigns: Owners, Admins, Developers and Marketers. Plans are priced by editors. |
| ESP | Email service provider: the platform that sends your campaigns, such as Klaviyo, Mailchimp, Braze or Salesforce Marketing Cloud. |
| Export | Turning a campaign into one complete HTML file to import into your ESP. |
| Field | One control in a part’s form, which fills or changes one or more markers. |
| Footer | The part of a template after the last module, which closes the email. |
| Form | The fields for one part, as marketers fill them in. |
| Group | A named, collapsible set of fields in a form. |
| Header | The part of a template from <!doctype html> to where the first module goes. |
| Marker | The data-mm="name" attribute on an element that a field fills or changes. |
| Media library | The workspace’s uploaded images, available in every image field. |
| Module | A reusable block in a template’s library, such as a hero or a product card. Marketers add modules to campaigns. |
| Module instance | One module added to a campaign. The same module can be added several times, each with its own content. |
| Part | The header, the footer or one module. |
| Pick | Filling a module or repeater item from a product or post. |
| Preheader | The short line inboxes show after the subject. Hidden in the email itself. |
| Problem | Something to fix. In templates, errors block publishing and warnings don’t. In campaigns, problems are shown but never block export. |
| Publish | Turning a template’s draft into a new version marketers can use. |
| Repeater | A field that repeats an element once per item, each with its own fields. |
| Restricted terms | Words and phrases AI suggestions never use. |
| Review request | Asking someone to review a campaign. Reviewers comment and approve. |
| Rich text | A field for formatted paragraphs, with bold, italic, lists and links. |
| Status | Where a campaign stands: Draft, In review, Approved or Completed. |
| Team only | A conversation Viewers can’t see. |
| Template | A header, a footer and a library of modules, each with a form. |
| Toggle | A switch that removes elements from the email and hides fields while it’s off. |
| Try-it preview | A public link to a campaign that anyone can edit in their browser without an account, used for the free templates on modular-mail.com. |
| Version | An immutable, numbered copy of a template, created by publishing. |
| Viewer | A free role for reviewers, clients and stakeholders, who can see campaigns, comment and approve but not edit. |
| Workspace | A team’s space, holding its templates, campaigns, images, integrations and people. |
