Email signature management softwareIT controls & Marketing runs

One platform for Microsoft 365 and Google Workspace. IT deploys company-wide in 45 minutes, then sets the guardrails. Marketing runs campaigns inside them without filing a ticket.

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What is Opensense?
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Over 300+ reviews on
G2 logo
Opensense G2 Winter 2026 awards for Leader, Best Meets Requirements, and Best Results in email signature management
G2 logo - enterprise email signature platform customerAmerican cancer society logoSalesforce logoHCL logoQualtrics logoFive9 logoCalm logoBombas logoCalifia Farms logoMattress Firm logoUWM logo - enterprise email signature solution customerCrossCountry Mortgage logoFisher Investments LogoUS Anesthesia Partners logoSAP logoRealtor logoRate logo - enterprise email signature solution customerRawlings logoNextiva logoQualys logoUser Testing logoBadger logoGBH logoPhoenix Suns logo - professional email signature solution customerPMC logo - enterprise email signature platform customerSandals logoPennymac logoBox logo1Password logoTampa Bay Buccaneers logoNextroll logoNBA logoDow Jones logo - enterprise email signature platform customerAcronis logoGitLab logo - enterprise email signature platform customer
G2 logo - enterprise email signature platform customerAmerican cancer society logoSalesforce logoHCL logoQualtrics logoFive9 logoCalm logoBombas logoCalifia Farms logoMattress Firm logoUWM logo - enterprise email signature solution customerCrossCountry Mortgage logoFisher Investments LogoUS Anesthesia Partners logoSAP logoRealtor logoRate logo - enterprise email signature solution customerRawlings logoNextiva logoQualys logoUser Testing logoBadger logoGBH logoPhoenix Suns logo - professional email signature solution customerPMC logo - enterprise email signature platform customerSandals logoPennymac logoBox logo1Password logoTampa Bay Buccaneers logoNextroll logoNBA logoDow Jones logo - enterprise email signature platform customerAcronis logoGitLab logo - enterprise email signature platform customer
The Problem

Nobody owns the signature, so everybody edits it.

Signatures start as a template in a wiki. From there they drift.A bad paste. A certification badge nobody approved. A quote someone liked. A disclaimer dropped by a rep in a regulated market.

Four versions of one signature, all sent the same week.
  • IT Owns a problem it never asked for.

    Tickets, scripts, and a mail flow rule nobody wants to touch.

  • Marketing Owns a channel it cannot reach.

    Every employee sends through it. Marketing cannot set any of it.

A 1,000-person company sends roughly ten million emails a year, and the brand on them is whatever each employee last pasted.

For IT

Deploy once. Set the rules. Stop getting tickets.

Choose how it deploys

The Outlook add-in signs mail inside Microsoft 365, so nothing reroutes. Server-side runs on an Exchange Online transport rule, Google Workspace on the Gmail API. Run more than one at once.

Directory sync that holds

Entra ID and Google Directory keep titles, numbers, and departments current. Upload a CSV for the fields your directory gets wrong.

Guardrails, not lockdown

Lock the fields that matter. Open the ones that don’t. Marketing works inside the rules you set.

Where we are not the fit

Opensense competes on control, not on price. There is a $500/month minimum, so a ten-person company that needs five signatures is better served by a free generator.

“We don’t ever have to worry about email signatures again.”
UWM 8,200 employees
Montgomery County

Runs Opensense across 3,000 employees in 20 departments.

For Marketing

The channel you already own, finally addressable.

Banners targeted by recipient, not sender

Rotate creative by campaign, region, or CRM segment. Target internal and external recipients separately.

Engagement you can report on

Opens, clicks, and engagement per campaign, per employee, per account. Give sales the signal and marketing the proof.

Wired to your stack

Salesforce, HubSpot, Marketo, Outreach, and RollWorks. Campaigns trigger from the CRM data you already keep.

  • CMG Financial

    25,000+ signature combinations

    A nationwide mortgage lender, across parent companies, joint ventures, and real estate partners, while holding regulatory compliance.

  • EDF Renewables

    Replaced paid ad spend

    Webinar signups grew 20%.

  • Design Pickle

    17 purchases from the signature

    “We’ve seen at least 17 purchases from our signature alone.”

Digital Business Cards

One card per employee, from the same directory.

The card reads from the directory record that already drives the signature, so a title change updates both. Shareable by link or QR, trackable, and governed by the rules IT already set.

Explore digital business cards
Opensense digital business card for Deanna Tom, Chief of Staff, showing contact details, LinkedIn link, and a QR code for easy sharing
Results

What changed, and for whom.

  • C3 Metrics

    28% faster deal closes

    Prospect engagement rose 31% on the same real-time email insights.

  • EDF Renewables

    20% more webinar signups

    Banners across 1,000+ employees replaced paid ad spend.

  • UWM

    8,200 employees, zero manual updates

    Moved off a fully manual process with no downtime.

Frequently asked questions

01
How does email signature management software deploy across Microsoft 365?

Opensense deploys three ways: server-side injection through Exchange Online, an Outlook add-in, or the Gmail API for Google Workspace. You can run more than one at once. With the add-in, mail stays inside Microsoft 365 end to end. Most IT teams finish the initial deployment in 45 minutes, and signatures then apply to every employee email regardless of device or client.

02
Does Opensense work with Microsoft 365 and Google Workspace?

Yes. Opensense is built primarily for Microsoft 365, with deep integration with Microsoft Entra ID, Exchange Online, and the M365 Integrated App marketplace. Google Workspace is fully supported, including Google Directory sync, centralized signature management, and analytics. One platform, both environments.

03
Who controls email signatures, IT or Marketing?

Both, by design. IT deploys Opensense once and sets the governance rules. From that point, Marketing manages banner campaigns, rotates creative, targets by CRM segment, and updates templates without filing an IT ticket for every change. IT controls the guardrails. Marketing operates within them.

04
How is Opensense different from email marketing software like HubSpot or Marketo?

HubSpot and Marketo send marketing emails to opted-in contact lists. Opensense governs the emails your employees are already sending: every prospect reply, every customer email, every partner communication. These are channels that require no opt-in lists and cost nothing incremental per send. Opensense connects to HubSpot, Salesforce, and Marketo so your campaigns can be triggered by CRM data. The two work together, they don't compete.

05
Is Opensense email signature software compliant for regulated industries?

Yes. Opensense is SOC 2 Type II certified and purpose-built for Microsoft 365 GCC High environments. We have many customers who have various certifications such as FedRAMP High, DFARS, ITAR, and CMMC. Email never leaves the Microsoft 365 environment with the Outlook add-in deployment. We are US Headquartered and US-based support is standard.

Testimonials

What are others saying about Opensense?

Read why the world's most advanced marketing & sales teams use Opensense as their preferred email signature, marketing, sales, and compliance solution.

Opensense has become indispensable in our sales tech stack, helping us scale the team, boost productivity, elevate the customer experience, and reduce friction within the buyer's journey.
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Esther F.

VP of Sales Efficiency and Transformation at Five9
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"We’re segmenting banners by employee function and communicating different messages all from a single, centralized admin console. Opensense serves as our extra layer for our demand gen campaigns, allowing us to segment banners and communicate different messages effectively. It has been a game changer for our targeted messaging."
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Tom C.

Corporate Website Manager at ARCOS
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"Opensense has been wonderful for promoting Diversity, Equity, and Inclusion initiatives. Starting with Pride Month last year, we extended it to Hispanic Heritage, Pride, and Black History, aligning our logos and featuring banner messages celebrating each occasion. These campaigns are now integral to our organizational identity."
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Molly S.

SVP of Connections & Design at Horizon Media
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"Opensense provides a level of professionalism that comes with having a bonafide, fortified email signature where nothing can be misconstrued. You have all the power to fix or unfix an email signature for thousands of people with a click of a button. It's a game-changer, especially for a customer-facing industry like ours”
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Sanford T.

Senior Business Systems Analyst at CMG Mortgage, Inc.
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Security

We comply with global data protection and security frameworks.

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AICPA SOC2 Type II certification badge showing compliance with security and data protection standards for trusted email signature software.
AICPA SOC2 Compliant

Detailed annual SOC 2 audits are performed on our controls and processes, the "gold standard" for security, integrity, confidentiality, reliability, and privacy controls.

McAfee Enterprise Ready certified email signature solution
McAfee Enterprise Ready Certified

As a leading antivirus offering, McAfee’s suite of security features offers businesses the best protection from all types of malware threats. McAfee’s ratings are qualified as completely objective.

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Independent Security Audits

We engage trusted, world-class, third-party security firms to conduct routine audits and penetration testing of the Opensense service and infrastructure.

GCC High compatible badge for secure email signatures and compliant communication for government contractors
Microsoft GCC High Ready

Opensense is the only email signature platform that operates inside Microsoft 365 GCC High. Signatures, banners, and tracking for government, defense, and other highly regulated industries.

Integrations

The most powerful, reliable, and secure solution on the market.

Active Directory, Office 365, and Google Workspace integrations keep email signatures consistent, up-to-date, and always in compliance.

Connect the most critical components of your tech stack to deliver an email experience that serves marketing, sales, and compliance goals.

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World Class Customer Service

Support you can actually reach.

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Compose

24/7 Support

24/7 US-based phone & email support

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High-Touch Service

Dedicated Customer Success Managers & Technical Contacts

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Quick Response

Maximum 4 hour email response time

See it on your own domain.

A demo runs about 30 minutes and uses your own templates and directory, so you see what your employees would actually send.

Get a demo See pricing
Opensense G2 Winter 2026 awards for Leader, Best Meets Requirements, and Best Results in email signature management