Why companies choose Exclaimer over Opensense
Certified security with full transparency
Exclaimer offers independently verified security with SOC 2 Type II, ISO 27001/27018, and Microsoft 365 certification. Audit logs and a public Trust Center give IT full visibility into email data handling.
Simple to set up and manage
Deployment is straightforward, and updates are easy. A drag-and-drop editor and central branding settings remove HTML work, and reduce the time spent managing email signatures.
Built for IT, powerful for marketing
Role-based access keeps policies in place while enabling Marketing to run campaigns, schedule banners, and track engagement—without needing support from IT.
More capability at lower cost
Exclaimer offers broader functionality and stronger support coverage worldwide, delivering better value and a clear path to scale without adding complexity or extra tools.
Exclaimer vs. Opensense: The key differences
 | Opensense | |
|---|---|---|
| Security | SOC 2 Type II, ISO 27001/27018, Microsoft 365 certification, dedicated Trust Center, audit logs, and a perfect 100/100 SecurityScorecard. | SOC 2 Type II only, no ISO certifications, no audit log functionality, and limited published documentation. |
| Control & governance | Advanced role-based access controls, paired with audit logs, give IT centralized brand governance while keeping every team operating within clear guardrails. | No advertised audit log functionality and fewer delegated access options limit governance and compliance monitoring. |
| Ease of use | Exclaimer’s drag-and-drop editor, dedicated branding and campaign controls, and no-HTML approach make it easy to maintain fast, automated brand governance. | Complex initial setup and HTML-heavy design make the platform harder for teams to use and push more work back onto IT. |
| Brand consistency | Dedicated Branding settings ensure 100% brand compliance across all templates and meeting backgrounds. | Branding changes require manual, template-by-template edits, making rebrands, acquisitions, and other updates slow and difficult to manage. |
| Marketing tools | True rotating banners for A/B testing, native analytics, CRM targeting, a dedicated campaigns workspace, and Meeting Branding expand what your teams can do across channels. | Dynamic banners only, with no rotation, so teams can’t A/B test signatures. Opensense also lacks Meeting Branding and dedicated campaign and branding controls, which limits safe delegation to Marketing teams. |
| Integrations | Exclaimer offers stronger native functionality with M365 & Google Workspace, as well as comparable deep integrations with Salesforce, HubSpot, Okta and more. | While Opensense lists a wide range of integrations, much of the functionality is limited and often depends on third-party tools to achieve what Exclaimer delivers natively. |
| Support & value | More capability at a lower cost, backed by dedicated support teams worldwide, including the U.S. | Despite being U.S.-based, Opensense operates with a smaller U.S. team and a more limited support footprint. |
| Beyond email | Exclaimer extends brand governance to video platforms like Microsoft Teams, Zoom, and Google Meet, giving you a unified, centrally managed presence beyond email. | Opensense’s capabilities outside email are limited and don’t include Meeting Branding or video support. |
Trusted by 75,000+ businesses worldwide
What IT teams say after switching from Opensense
Clearer control, easier management, and faster rollout—from teams that made the move.
“The first thing that stood out was how easily Exclaimer fits into our Microsoft 365 environment compared to Opensense. The setup was straightforward, and the support team made the process even smoother. Once everything was in place, we barely had to touch it again.”
“Deployment is straightforward, and the automated integration with Microsoft 365 makes email routing simple. The design interface is easy to work with, and in my experience, Exclaimer is well ahead of other options in the market.”
“Don't waste time with any other service, you won't find anything that offers all the features and ease of use that Exclaimer has. It makes designing the perfect signature fun and stress free. This is a very well thought out email signature management system.”
What sets Exclaimer apart
Centralize brand updates without HTML
Exclaimer’s dedicated Branding settings, coupled with our drag-and-drop editor ensures seamless signature design, and automatic updates to ensure brand-compliance organization wide.
Opensense relies on HTML templates and manual edits that increase effort for IT teams, risk brand-inconsistencies, and limit automated brand-compliance.
Powerful campaigns in one workspace
Exclaimer provides a dedicated Campaigns workspace for banners, advanced scheduling, and CRM-driven targeting. This workspace also allows IT to delegate access to marketing teams through role-based controls, keeping governance intact.
Opensense spreads campaign tasks across individual templates, with no dedicated settings or central place to manage activity.
Test messages with true rotating banners
Exclaimer supports true automatic banner rotation, giving marketing teams an easy way to compare banner performance through A/B testing.
Opensense offers dynamic and schedulable banners but doesn’t provide the automated rotation needed for A/B-style testing.
Extend brand consistency into video meetings
Exclaimer extends brand governance to the video tools you already use with Meeting Branding. You can deploy branded backgrounds to Microsoft Teams, Zoom, and Google Meet from one central interface, aligned with the brand controls set in Branding.
Opensense doesn’t offer Meeting Branding, leaving video platforms unmanaged and off-brand.
Enterprise support built to handle global environments
Exclaimer provides global, dedicated support teams, including U.S.-based coverage, signature design specialists, and customer success resources for onboarding and ongoing management.
Despite being U.S.-based, Opensense has a smaller U.S. support team and a limited presence in other regions.
Frequently asked questions
Straight answers for teams comparing Exclaimer and Opensense.
Exclaimer is built for IT and powerful for the business. Setup is straightforward, and IT gets a clean dashboard, a drag-and-drop designer, and role-based access that reduces day-to-day workload.
Opensense relies on server-side configuration and HTML edits, and often needs support involvement for routine updates—adding tickets and extra work for IT teams.
Exclaimer offers dedicated branding controls that automatically apply approved logos, colors, and fonts across selected templates and meeting backgrounds. When a rebrand happens, one update scales across the entire organization.
Opensense relies on manual edits and HTML-heavy changes, increasing the risk of inconsistencies and making brand governance difficult to maintain at scale.
Exclaimer offers true rotating banners, CRM-driven targeting, scheduling, and a dedicated Campaigns workspace. You can also pull live social feeds directly into signatures, adding another channel for engagement.
Opensense supports basic dynamic banners and CRM connections but lacks rotation, a central place to manage campaigns, and often places core marketing features behind higher tiers.
Exclaimer supports global organizations with dedicated Customer Success teams, regional support coverage, and the documentation IT and compliance teams expect. Tools like Branding make brand governance straightforward.
Opensense has a smaller support footprint and fewer resources or tools to help automate processes in complex environments.
Exclaimer delivers broader capability at a lower total cost. Plans scale cleanly without extra tools or seat minimums, allowing for the flexibility to select the plan that best supports your needs.
Opensense’s minimum spend is typically higher, and key features sit behind more expensive tiers while also relying on third-party tools to achieve full benefit.
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