Pricing
Payment overseer pricing for SMEs
Sentra is not general email security — Microsoft already helps with that. Sentra is a payment overseer: it watches your invoice and accounts mailboxes and checks messages against your verified supplier list from Xero before you approve payment. From £29/month for one monitored mailbox.
| Item | Price (ex VAT) | Notes |
|---|---|---|
| Base platform + 1 mailbox | £29/mo | Payment overseer + one monitored mailbox |
| Extra mailbox (2–3 total) | £8/mo each | Typical invoices@ + accounts@ setup |
| Extra mailbox (4–6 total) | £6/mo each | Volume discount |
| Extra mailbox (7+ total) | £5/mo each | Contact us for larger deployments |
| Annual base | £290/yr | About two months free on the platform fee |
| Pilot programme | £0 or £15/mo | 90-day pilot — contact us for terms |
Estimate your monthly cost
Base includes one monitored payment mailbox. Extra mailboxes are priced with volume discounts.
Monthly billing
£29
per month ex VAT
- Platform + 1 mailbox: £29
Annual base
£290
per year ex VAT (~2 months free)
What is included
- Payment-risk monitoring for selected mailboxes (not whole-company email security)
- Supplier register sync from Xero payees
- Risk inbox, cases, and verification workflows
- Audit trail for payment-risk decisions
- Volume discounts as you add monitored mailboxes
Pilot programme
Selected customers may qualify for a 90-day pilot at £0 or reduced pricing. Contact us and we will confirm pilot terms before checkout.