Sigil by Tophhie Cloud

Sigil gives your organisation one place to design, manage and enforce Outlook email signatures — applied automatically to every message your people send.

Signatures are rendered centrally from your Microsoft 365 directory and personalised per user, so job titles, phone numbers and offices are always current without anyone editing their own signature. An Outlook add-in applies the right signature on every new message and reply, across desktop, web and mobile.

What you can do

• Design without code — build signatures in a drag-and-drop designer, or edit Outlook-safe HTML directly. Keep a library of templates and choose which is live.
• Personalise from your directory — pull name, title, department, phone, address, manager and custom attributes straight from Microsoft 365. Empty fields disappear cleanly.
• Target the right people — assignment rules give different templates by department, office, email domain or Entra group membership.
• Run campaigns — schedule time-boxed marketing banners above or below signatures, with click analytics, and no template edits.
• Stay compliant — append legal footers per domain so no signature can omit them.
• Separate replies — use a lighter signature for replies and forwards, with automatic fallback.
• See what's working — activity reporting shows which mailboxes the add-in is actually reaching, and directory attribute coverage flags gaps before you rely on a field.

Built for Microsoft 365

• Sign in with your existing Microsoft Entra work accounts — single sign-on, no separate credentials.
• Self-serve setup: an administrator grants consent and the organisation is live in minutes.
• Signatures render as Outlook-safe HTML with inline images — no broken remote images, no blocked content.
• Role-based portal access for admins, template editors and marketing.

Start free. Every plan begins with a 14-day free trial of all features — no payment details required to start.