Enterprise email signature management, instantly.
Create, control, and automate professional email signatures, campaign banners, and disclaimers across Microsoft 365 and Google Workspace — without asking users to update anything manually.
Free trial · No credit card to start
Signature Builder
Sarah Mitchell
Head of Marketing
Domain Verified
DNS & SPF aligned
The console
Design, target, and publish — from one admin console.
Build signatures next to a live email preview, attach campaign banners and disclaimers, and watch connector status and analytics in the same place.
The problem
Email signatures break down at scale.
Every employee sends email all day, every day. Without central control, your most-used channel quietly drifts off-brand and out of compliance.
Inconsistent employee signatures
Ten teams, ten fonts, three old logos. Every mailbox formats its own version of your brand.
Manual updates across teams
A rebrand means begging hundreds of people to paste HTML into settings.
No visibility on campaign banners
Banners go out — then nothing. No impressions, no clicks, no learning.
Disclaimers are hard to control
Legal text is copy-pasted, outdated, or simply missing where it matters.
IT depends on users to make changes
Every tweak becomes a ticket queue and a week of follow-ups.
Marketing can't manage email branding centrally
The brand team owns every channel except the one used most. Email branding sits locked inside individual mail clients.
Brand controls
The platform
One platform to control every employee email signature.
Everything IT, marketing, and compliance need to run email identity as a managed, measurable channel.
Signature Builder
Design pixel-perfect templates with dynamic directory fields.
Campaign Banners
Schedule promotional banners under every signature, by audience.
Disclaimers
Apply the right legal text per region, entity, and language.
Directory Sync
Names, titles, and phone numbers stay current — automatically.
Rules & Targeting
Assign templates by team, region, domain, or job role.
Analytics
Impressions, clicks, and coverage for every banner and template.
Mail Flow Gateway
Server-side stamping signs every message — every client, every device.
Role-Based Access
Give marketing the brand, IT the controls, legal the disclaimers.
Made for people
Built for the teams that manage brand, compliance, and email identity.
InstantSigner removes the busywork between IT, marketing, and every employee inbox — so each team gets what it needs without chasing the others.
Setup completeIT teams
Connect once, then automation does the rest.
Banner CTR 4.8%Marketing teams
Review and launch campaign banners in minutes.
100% consistentBusiness owners
Every email leaves the building on-brand.
Nothing to updateEmployees
Professional signatures with zero effort.
How it works
From zero to fully managed in five steps.
No agents to install, no HTML to email around, nothing for your users to do. Most teams are live the same morning they sign up.
Connect your domain
Authorize Microsoft 365 or Google Workspace with admin consent and verify your sending domain.
Sync your users
Pull people, titles, departments, and phone numbers straight from your directory — and keep them fresh.
Design your signature
Build once in the drag-and-drop editor. Dynamic fields personalize it for every employee automatically.
Publish rules
Decide who gets which template, banner, and disclaimer — by team, geography, or role. Publish in one click.
Track performance
See coverage, impressions, and banner clicks the moment email starts flowing.
Integrations
Built for Microsoft 365 and Google Workspace.
Native, admin-approved connections — no plugins to deploy, no agents on devices, nothing for employees to install.
Campaign banners
Turn every employee email into a brand channel.
Your team already sends thousands of one-to-one emails a month. Attach targeted banners under every signature — and measure what they earn.
From: daniel.reed@acmegroup.com
Subject: Great speaking today — recap inside
Daniel Reed
Senior Account Executive · Acme Group
+1 (212) 555-0190 · acmegroup.com
Acme Summit 2026
Meet us in Austin — June 24–26
Register →This email and any attachments are confidential and may be legally privileged. If you are not the intended recipient, please notify the sender and delete this message. Acme Group Ltd · 100 Congress Ave, Austin, TX.
Summit 2026 banner
Live- Audience
- Sales & CS · 84 people
- Date range
- May 12 → Jun 26
Impressions
32,640
▲ 18% vs last month
Clicks
1,284
4.8% CTR
Security & control
Secure by design. Controlled by admins.
Email identity is infrastructure. InstantSigner treats it that way — centrally governed, fully audited, and invisible to end users.
Centralized control
One console governs every signature, banner, and disclaimer in the organization. Publish a change once and it reaches every mailbox — no exceptions, no stragglers.
Role-based access
Scoped roles for IT, marketing, and legal — everyone gets exactly the controls they need.
Audit logs
Every template change, rule edit, and publish event is recorded and reviewable.
Domain verification
Signatures only flow through domains you have verified and aligned with SPF and DKIM.
Compliance disclaimers
Region- and entity-aware legal text applied automatically, never left to chance.
No manual user updates
Employees never touch settings or paste HTML — so nothing drifts out of policy.
Mail-flow visibility
See connector health and message stamping status across your tenant in real time.
Analytics
Prove what email identity is worth.
Coverage, delivery, and engagement — reported per template, banner, team, and platform.
Messages processed
1.28M
Campaign clicks
18,432
Active users
248
Signature coverage
96%
Frequently asked questions
Still curious about something we haven't covered? Our team is one message away.
Email signature management software lets one administrator centrally create, deploy, and enforce branded, compliant email signatures across every employee mailbox — instead of asking each person to set up their own. Instant Signer connects to your directory, pulls user details, and keeps signatures consistent and up to date automatically.
Most teams are live within an afternoon. You grant read-only directory access and add a single mail-flow connector — there are no agents to install on individual machines.
No. For cloud deployment, messages are stamped in transit and never stored. We process MIME content in memory, add the signature, and hand the message straight back to your email platform.
Yes. Every signature is rendered as bulletproof, table-based HTML with inline styles and plain-text fallbacks, and previewed across major clients before you publish.
Microsoft Entra ID, Google Workspace Directory, Okta, and common HRIS systems. Sync runs automatically and can be triggered manually at any time, with user-editable overrides.
You're billed per managed email account, with annual or monthly options. Subscriptions, invoices, and payments are managed in a secure billing portal.
Yes — every account starts with a free trial. No credit card required to get started, and you can cancel anytime.
Ready to control every email signature from one place?
Launch professional signatures, campaign banners, and disclaimers across your organization with centralized control.
- Free trial
- No credit card to start
- Nothing for users to install