Discover a Powerful Exclaimer Alternative
Opensense offers an easy-to-use platform to manage your company email signatures, email ad campaigns, sales tracking, and compliance.
What’s the difference?
See how Opensense stacks up in features in comparison to
Opensense helps marketing, sales, and IT teams make more of employee email to guard their brand and grow their funnel. Manage company-wide email signatures, launch email ad campaigns, uncover sales insights, and meet compliance needs, all within a single platform.
Microsoft 365, Exchange & Google Workspace.
What’s the difference?
See how Opensense stacks up in features in comparison to
Opensense helps marketing, sales, and IT teams make more of employee email to guard their brand and grow their funnel. Manage company-wide email signatures, launch email ad campaigns, uncover sales insights, and meet compliance needs, all within a single platform.
Microsoft 365, Exchange & Google Workspace.
Background on Exclaimer
Exclaimer has the #1 used email signature management product in the world (It’s because they are the oldest). They were founded in 2001 in the United Kingdom. They have a wide variety of tools including on-premises Exchange backup and migration. Exclaimer is private-equity owned.
- Server-side deployment with the stamping method only
- No published US data residency option
- Only on Azure, not hosted on other cloud platforms
- No rotation, scheduling, or recipient-based targeting on banners
- No whitelabeled URLs
- No options for internal or external multi-recipient targeting
Their pricing carries an automatic annual increase. Exclaimer’s own Knowledge Base article on understanding invoices states that renewals are uplifted by 8% every year, applied by default rather than negotiated per account (checked August 2026). Compounded across three renewals that is roughly 26% above the year-one rate, before any change in seat count.
Opensense does not work that way. Our Master Services Agreement says fees “may increase by a mutually agreed upon amount” on each annual anniversary, and that we give at least 30 days’ written notice of any pricing change before the term ends. That is a narrower promise than it sounds. Your price is not fixed forever. It means an increase needs your agreement and advance warning instead of arriving on the renewal invoice.
Who owns Exclaimer, and why that reaches your renewal invoice
Exclaimer is on its second private equity owner. It has changed chief executive three times since January 2020. Both of those are matters of public record, announced by Exclaimer and by its investors.
- 2016: Livingbridge, a London private equity firm, takes a majority stake in the business.
- January 2020: Heath Davies becomes CEO, succeeding David Ferguson.
- December 2020: Insight Partners and Farview Equity Partners buy control for more than £100 million. Livingbridge rolls over into a minority holding.
- 2021: Marco Costa replaces Davies.
- September 2024: Rob Singer replaces Costa, who had held the job for three years. (Ownership and leadership dates checked August 2026.)
Read that list alongside the 8% renewal uplift and the uplift stops looking like a pricing quirk. A company held by a control investor is measured on revenue it can forecast, and the most forecastable revenue in software is the increase you take from customers who have already wired you into their mail flow. Publishing the number in a Knowledge Base article, rather than negotiating it account by account, is how that gets done at scale. It is efficient. It is also why the price you agreed to in year one is not the price you are quoted in year four.
There is a second cost to the churn, and it is the one buyers notice late. Sign a three year agreement with Exclaimer today and, on the record above, you are likely to be dealing with a different chief executive before it ends. Whoever you negotiate terms with may not be there to honor the spirit of them.
Opensense is venture backed rather than private equity owned, and Bloomberg is on our cap table. Treat that as a difference in structure, not a character reference. Our investors want the company to grow too. The difference that should matter to you is contractual rather than cultural: our fees move by agreement and with notice, and Exclaimer’s move by 8% because their published invoicing policy says they do.
Frequently asked questions
Does Exclaimer increase prices every year?
Yes. Exclaimer’s published invoicing policy applies an automatic increase of 8% at each annual renewal, described in the “Understanding invoices” article in their own Knowledge Base (checked August 2026). The increase is applied by default at renewal rather than negotiated per customer, so the price you agree to in year one is not the price you pay in year two. Opensense has no automatic uplift of any kind.
How much does Exclaimer’s 8% annual increase add over three years?
Compounding Exclaimer’s own published rate, a subscription renewed three times costs about 26% more in year four than it did in year one, and about 17% more by year three. That is arithmetic on their stated 8% policy rather than a quoted price, and it is before any growth in seat count. Budget for it when you compare a first-year quote against a vendor that does not raise prices automatically.
Does Opensense have an automatic annual price increase?
No. Our Master Services Agreement states that on each annual anniversary of the term, fees “may increase by a mutually agreed upon amount,” and that we give at least 30 days’ written notice of any pricing change before the current term ends. Read that carefully, because it is not a promise that your price never moves: it means an increase requires your agreement and advance notice instead of arriving on the invoice. The full clauses are sections 8.1 and 13.2 of the MSA at https://www.opensense.com/legal/msa.
What should I check in an email signature vendor’s contract before renewing?
Look for an automatic uplift clause first. Several signature vendors index renewals to a fixed percentage, and Exclaimer publishes 8% per year in its own invoicing documentation, so the renewal quote is set before any conversation happens. Then check who owns the renewal notice window, whether seat overages are billed at contracted or list rates, and whether a multi-year commitment is the only way to hold a rate. Ask for the increase policy in writing. A vendor that applies one will usually tell you the number, and a vendor that does not should be willing to say so in the agreement.
Who owns Exclaimer?
Exclaimer has been private equity owned since 2016, when the London firm Livingbridge took a majority stake. In December 2020 Insight Partners and Farview Equity Partners acquired control in a deal worth more than £100 million, with Livingbridge rolling over into a minority holding. Insight Partners has been the majority owner since then (checked August 2026). Opensense is venture backed rather than private equity owned, and Bloomberg is on our cap table.
How often has Exclaimer changed CEO?
Three times since January 2020. Heath Davies succeeded David Ferguson as chief executive in January 2020, Marco Costa replaced Davies in 2021, and Rob Singer replaced Costa in September 2024 after Costa had held the role for three years. Each change was announced by Exclaimer or over the newswires (checked August 2026). A three year software agreement signed today would, on that record, be likely to outlast the executive who signs it.
See the difference today!
Why choose Opensense?
Enterprise-grade Product
Backed by Bloomberg and built on ultra-redundant multi-cloud environment with fine-grain access and control.
Enterprise-grade Support
24/7 US-based support (phone & email), dedicated Customer Success Managers, and technical contacts.
Enterprise-grade Security
SOC2 compliant, McAfee Enterprise Ready certified, AppExchange approved, with independent security audits.
Used by the brands you depend on
Security
We comply with global data protection and security frameworks.
We know your data is sensitive. That’s why we combine enterprise-grade security features with regular audits to ensure that you’re always protected.
Compare Opensense with other email signature tools
Guard your brand. Grow your funnel.
From beautiful email signatures and powerful ad campaigns to sales analytics and email compliance, Opensense can help you make the most of employee email.
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