How do I update everyone's email signature at once?
To update every employee's email signature at once, use a centralized signature manager that deploys server-side. With Siggly you edit one template and push the change to all mailboxes across Google Workspace and Microsoft 365 in a single click — no per-user edits, no IT tickets, no employee action needed.
Update Every Signature From One Dashboard
Edit Once, Deploy to All
Change the template and every employee's signature updates automatically. Perfect for rebrands, new campaigns, or a phone-number change.
Instant Rollout
Deploy to hundreds or thousands of mailboxes in under a minute using batched API calls — no waiting on employees.
Enforced, Not Optional
Signatures are applied server-side, so the update reaches everyone even if they never touch their email settings.
Schedule Changes
Queue updates and promotional banners to go live on a specific date — ideal for launches and seasonal campaigns.
Why manual updates don't scale
Asking every employee to paste new signature HTML into Gmail or Outlook is slow, error-prone, and impossible to enforce. Some people never do it, others break the formatting, and your branding drifts out of sync.
A centralized manager removes the human step entirely. Siggly stores the approved template and applies it directly to each mailbox through the Gmail and Microsoft Graph APIs, so one edit updates the entire company consistently.