Shows how a template reads, with no recipient made: a saved template (templateId) or unsaved template fields (format, subject, body and tags). Built-in tags: contact.firstName: The first word of the contact's name. (e.g. Ken); contact.name: The contact's name: the name the team gave them, else the name they gave. (e.g. Ken Lee); contact.lastName: Everything after the first word of the contact's name. (e.g. Lee); contact.email: The contact's email address. (e.g. ken@example.com); contact.company: The domain of the contact's address; empty for a webmail address such as gmail.com. (e.g. acme.com); contact.note: The team's note on the contact, as written; it goes into the email exactly as it is. (e.g. Met at the October demo day.); contact.tags: The contact's tags, comma-separated. (e.g. Investor, Seed); contact.firstSeen: When LinkDrop first saw the contact, e.g. October 22, 2026. (e.g. October 22, 2026); contact.lastSeen: When the contact was last seen, e.g. October 22, 2026. (e.g. October 22, 2026); contact.visits: How many times the contact has viewed, as a number. (e.g. 3); link.url: The recipient's own LinkDrop link to the document or project; one link per person, reused on every render. (e.g. https://lnkdrp.com/s/example); link.password: The password of the recipient's own link; empty when the link has none. Filled when the email is sent and for a member signed in to the app; a connected agent sees [password]. (e.g. chris58); document.title: The document's title (document emails only). (e.g. Q3 investor update); project.name: The project's name (project emails only). (e.g. Series A data room); sender.name: The name of the member the email is from. (e.g. Chris); sender.firstName: The first word of the sender's name. (e.g. Chris); sender.email: The sender's LinkDrop account email (not necessarily the Gmail address the email goes out from). (e.g. chris@example.com); workspace.name: The workspace's name. (e.g. LinkDrop). mode tags (the default) shows each tag as written ({{contact.firstName}}) unless values gives it one; mode examples shows each tag's example (the template's own for a custom tag, else the built-in one, else the tag as written). contactId (with templateId) shows the saved template as that contact's email: their details, the sender's and the workspace's, {{link.url}} as a placeholder (their own link is made when the email is rendered) and {{link.password}} as [password]; a contact this person cannot see is contact_not_found. dryRun true adds the dry-run band and the [Dry run] subject marker; dry runs are on Pro and up, and on Free it answers plan_limit with details.upgradeUrl. Nothing is stored, no link is made and nothing is charged. Returns subject, text, html, missingTags (required tags with no value), usedTags, errors: what saving this template would refuse, as { code, message } (unsaved fields' link-like custom tag is custom_tag_is_link), warnings: what saving it would note without refusing (body_self_centred), missing (for a contact: the tags that come out empty or as their fallback, { key, reason }), contact (the contact previewed as; name and email wrapped as untrusted content) and dryRun. html carries the template's align. A preview page with an address of its own comes from lnkdrp_render_email, which renders for a real contact and may create that contact's link.