Exclaimer is email signature management software that applies consistent signatures, disclaimers and banners to every mailbox in Microsoft 365, Google Workspace or Exchange. It is built for companies of 10 or more users, costs $0.90 to $1.75 per user a month billed annually, and has a 14-day free trial.
The bottom line
A low-cost, IT-friendly signature manager; most teams will want Standard or Pro.
8 - server and client deployment, directory and HRIS sync, campaigns, targeting and analytics across plans.
Value8/10
8 - $0.90 to $1.75 per user a month is low, though the 10-user minimum and weak Starter plan limit small teams.
Ease of use7/10
7 - cloud setup with directory sync and templates; rules and targeting take some learning.
Ecosystem8/10
8 - Microsoft 365, Google Workspace, Exchange, client-side deployment in Outlook or Gmail, plus Salesforce and HubSpot on Pro.
Support7/10
7 - 24/5 support, knowledge base with videos and a dedicated CSM on Enterprise; no weekend support.
What it really is
A cloud service that applies centrally managed email signatures, disclaimers and banners to every mailbox in Microsoft 365, Google Workspace or Exchange.
Our take
Exclaimer does one job well: it takes signatures out of employees' hands. Per-seat prices are low and the security paperwork is strong, which matters to IT. The plan ladder is the thing to read closely. Starter gives you a single template and a single banner, Standard is where department designs and campaign scheduling start, and anything measurable (click tracking, A/B tests, CRM targeting) sits in Pro. With a 10-user floor, it is a company tool, not a personal one.
Why we rate it
Central control of every signature at a low per-seat price, with strong security certifications.
The catch
10-user minimum, a very limited Starter plan and analytics only on Pro.
Best for
Microsoft 365 or Google Workspace companies
Regulated teams needing disclaimers
Marketing banners in every email
Not good for
Solo users or teams under 10
Users who want one personal signature
Friction report
Time to value
Short: connect the directory and publish a first template; targeting rules take longer.
Scale breakpoint
Needing more than one template or any click analytics.
Walled garden
Medium: designs live in Exclaimer, but signatures are standard HTML in sent mail.
Unlimited brands, usage and engagement dashboards, HRIS sync, Salesforce and HubSpot targeting, audit log
Enterprise
Custom quote
Standard or Pro plus a dedicated customer success manager and guided rollout
From Exclaimer's pricing page, checked 4 October 2026. Minimum 10 users; monthly billing is offered but its price is not shown.
What each Exclaimer plan includes
Feature
Starter
Standard
Pro
Signature templates
1
Unlimited
Unlimited
Brand kits
1
3
Unlimited
Promotional banners
Single
Multiple, rotating
Multiple, rotating
User-editable fields
None
2
Unlimited
Campaign scheduling
No
Standard
Advanced
Engagement dashboard and A/B tests
No
No
Yes
HRIS sync, Salesforce and HubSpot
No
No
Yes
From Exclaimer's plan comparison table, checked 4 October 2026.
Frequently Asked Questions
Exclaimer costs $0.90 per user per month on Starter, $1.45 on Standard and $1.75 on Pro, billed annually, with a minimum of 10 users. Enterprise is custom-quoted. A 10-user Starter account works out to $108 a year (checked 4 October 2026).
It is used to manage email signatures centrally for a whole organization on Microsoft 365, Google Workspace or Exchange. It keeps contact details current from your directory and adds legal disclaimers and marketing banners to outgoing email.
Yes. Exclaimer offers a 14-day free trial, and you can also book a free personalized demo (checked 4 October 2026).
Conversion Gems is a review site, not Exclaimer. Customers sign in at Exclaimer's own portal: https://portal.exclaimer.com/sign-in/ (the 'Log in' link on exclaimer.com).
Yes. Exclaimer's pricing FAQ states a minimum of ten users. Licensing counts active mailboxes that receive a signature.
Only Pro includes the usage and engagement dashboards, A/B testing, HRIS sync, audit log and the Salesforce and HubSpot integrations.
Exclaimer alternatives
Other email signature tools from our reviews:
WiseStamp: Email signature manager for Office 365, Google Workspace and Exchange, with a free signature generator.
MySignature: HTML signature builder priced per signature, a good fit for individuals and small teams.
HubSpot: Free email signature generator alongside its CRM and marketing tools; you paste each signature in yourself.
