Ready to go from day one
Sigil ships with a polished, pre-built signature template — use it as-is, or recreate your current signature exactly with the drag-and-drop designer or HTML editor.
Sigil vs Exclaimer The modern alternative to
The modern alternative to
Exclaimer for Microsoft 365
Sigil is a purpose-built replacement for Exclaimer Cloud — applied client-side in Outlook, personalised from your directory, provable per mailbox, and priced simply. Start with a polished, ready-made signature, or recreate your current one exactly.
14-day free trial · no card required · £0.70 per mailbox / month
Side by side
How Sigil compares
The differences that matter when you’re managing signatures for a whole organisation on Microsoft 365.
SigilExclaimer
How signatures are applied
Client-side, in the Outlook compose window as you write — no mail-flow rewriting.
Server-side stamping through mail flow, or a separate client add-in.
Proof it’s working
Per-mailbox adoption telemetry and a never-applied list — know exactly who’s covered.
Varies by plan; limited per-mailbox visibility.
Speed of change
Publish and it’s live in seconds — nothing to redeploy.
Changes propagate through the service.
Personalisation
Live from Microsoft Graph — 30+ attributes incl. 15 custom, with conditional sections.
Directory-based fields.
Authoring
Drag-and-drop designer and full HTML control, with drafts, line diffs and versioned rollback.
Drag-and-drop editor.
Microsoft-native
Entra sign-in, Graph personalisation, Integrated-apps deploy. No third-party directory sync.
Microsoft 365 integration; server-side option routes mail externally.
Analytics & privacy
Click counts only — no IP addresses, no recipient identities, no message content.
Campaign and engagement analytics.
Pricing
£0.70 per mailbox / month, every feature included, shared mailboxes free.
Tiered plans priced by feature set.
Free trial
14 days, all features, no card required.
Free trial available.
Highlights reflect Sigil’s approach. Exclaimer’s capabilities vary by plan — see their site for current details.
Why teams switch
Everything you’d expect — and the parts you couldn’t get before
You can prove it’s working
Most signature tools can’t tell you who’s actually covered. Sigil shows per-mailbox adoption and a never-applied list, so nothing slips through.
No mail-flow surprises
Signatures are applied in the compose window, so senders see their own signature as they write — Sigil never reroutes or stamps your outbound mail.
Change it in seconds
Rebrand, fix a disclaimer or launch a campaign and publish — the next message every user composes carries the change. No redeploy, no waiting.
One simple price
£0.70 per licensed mailbox per month with every feature included — no tiers, no feature gates, and shared mailboxes are free.
Privacy by default
Read-only directory access and click-count-only analytics — no IP addresses, no recipient identities, no message content, ever.
Ready to send
A polished signature, ready to go
Sigil comes with a professionally designed signature template, pre-packaged and ready from the start — so you’re not building from a blank page. Prefer a seamless switch? Recreate your current signature exactly with the drag-and-drop designer or full HTML editor, then modernise it whenever you like.
Readysignature included — use it as-is or tailor
Switching is simple
Move from Exclaimer in three steps
- 01
Start your trial
Grant admin consent and deploy the Sigil add-in through Microsoft 365 Integrated apps. No card required.
- 02
Set up your signature
Use Sigil’s ready-made template, or recreate your current signature exactly with the drag-and-drop designer or HTML editor — so the switch is seamless.
- 03
Switch it on
Roll out to a pilot group with assignment rules, confirm adoption in the dashboard, then turn off the old tool.
Switching questions
Moving over, answered
Will recipients notice the switch?
Only if you want them to. Sigil ships with a polished ready-made signature, and its designer and HTML editor let you recreate your current signature exactly — so you can make the switch seamless for recipients, or refresh the design at the same time.
Do I have to change my mail flow?
No. Sigil applies signatures client-side, inside Outlook as messages are composed. There are no connectors to configure and nothing rerouting your outbound mail.
Can I run both during migration?
Yes. Because Sigil is client-side and assignment rules let you pilot with a group first, you can trial it alongside your existing tool and cut over when you’re ready.
Set up Sigil for your organisation
Consistent, on-brand signatures on every mailbox — deployed in minutes, updated in seconds. Start free, and see it working across your tenant today.
14-day free trial · no card required · £0.70 per mailbox / month after
Exclaimer is a trademark of its respective owner and is not affiliated with, or an endorser of, Sigil or Tophhie Cloud. This comparison describes Sigil’s approach and publicly available information; competitor features, plans and pricing change — please check Exclaimer’s website for their current details.