Billing and subscription
Sigil costs £0.70 per licensed mailbox per month, billed monthly, with every feature included. There is a 14 day free trial.
Billing runs on Stripe. Your organisation is a Stripe customer with one per-seat subscription.
What counts as a seat
Section titled “What counts as a seat”A seat is a licensed member mailbox.
| Mailbox type | Billed |
|---|---|
| Licensed member mailbox | Yes |
| Shared or resource mailbox | No, unlicensed and therefore free |
| Guest account | No |
| Disabled account | No |
Shared mailboxes still get signatures. They just do not cost anything.
Note that attribute coverage counts shared mailboxes, because they still need a signature. Its total will not match your seat count, and that is expected.
A daily job syncs your seat count to the subscription. Quantity changes do not trigger a mid-cycle invoice, so drift never produces a surprise charge partway through a month.
The trial
Section titled “The trial”The trial gives you real seats from day one. Nothing is charged until it ends.
At the end of the trial, Stripe converts the subscription itself:
With a card on file, it charges the card and the subscription becomes active.
With no card on file, it cancels the subscription. An organisation that never adds a card simply stops rather than being billed by surprise.
What happens if billing lapses
Section titled “What happens if billing lapses”Once a trial ends without an active subscription, signatures stop. The add-in receives a 402 and applies nothing.
The same applies to a subscription that becomes past due or is cancelled.
This is the first thing to check when an entire organisation loses its signatures at once. See troubleshooting.
Nothing is deleted when billing lapses. Templates, images, rules, banners and footers all remain. Restoring an active subscription restores signatures.
Adding and managing a card
Section titled “Adding and managing a card”Both are self-serve from the Billing view.
Add a card through Stripe Checkout. The card you add is promoted to the default payment method for invoices automatically.
Manage cards and download invoices through the Stripe customer portal, also linked from the Billing view.
What the Billing view shows
Section titled “What the Billing view shows”Subscription status, seats in use, the card on file, and your most recent invoice.
The per-seat price is shown for reference. The authoritative rate is the one held in Stripe.
Billing profile
Section titled “Billing profile”The company details that appear on the invoice are held separately and pushed to Stripe whenever you save them. See billing profile.
Cancelling
Section titled “Cancelling”Cancel through the Stripe customer portal, linked from the Billing view.
Signatures stop when the subscription is no longer active. To remove Sigil properly, also withdraw admin consent in Entra and remove the add-in from Integrated apps.
If you want your data deleted rather than left dormant, ask support to deprovision the tenant. That cancels billing and purges every record, asset and cached entry belonging to your organisation.
Managed by a partner
Section titled “Managed by a partner”If a managed service provider runs Sigil for you, your organisation has no subscription of its own. Your seats are counted into your partner’s consolidated subscription and your partner bills you through their own arrangement.
The Billing view reflects that rather than offering you a card to add. See partner billing.
Who can see billing
Section titled “Who can see billing”Admins only. Editors and the Marketing role do not reach it.