Exclaimer vs Signature 365 (2026): which should you pick?

Pick Exclaimer if

• Fits if your IT team runs Microsoft 365, Exchange or Google Workspace and wants signatures on every device
• Works for companies that need a legal disclaimer on every outgoing email

Look elsewhere if

• Not for you if you're one person or a tiny team, as licensing has a 10-user minimum
• Tight if you're on Starter, which allows one signature template for the whole company
• Pricey if you want engagement reports, HubSpot or Salesforce targeting or HR sync, which are Pro at $1.75 a user
• Skip it if you want a free plan, because there's only the 14-day trial
• Watch out: monthly billing is offered, but the pricing page only shows the yearly prices

Pick Signature 365 if

• Fits if you run Microsoft 365 for 10 or more people
• Works for companies that want the same signature and campaign banner on all mail

Look elsewhere if

• Skip it if you use Google Workspace, since it targets Microsoft 365 only
• Not for you if you have fewer than 10 users, as the minimum is 10
• Watch out: licenses count every user and shared mailbox, signature or not
• Watch out: it is not covered by the 30-day money-back guarantee on Symprex's other software
• Watch out: cancelling ends the subscription at period end and the data is deleted

Exclaimer

• Licensing is per active mailbox, with a minimum of 10 users.
• Starter allows one signature template; separate designs per department need Standard.
• Engagement reports, HubSpot and Salesforce targeting and HRIS sync are Pro features.
• Monthly billing is offered, but the pricing page shows only the annually billed prices.

Signature 365

• It is built for Microsoft 365 and Office 365; the pages mention Exchange Server only as the target of a separate Symprex product.
• The minimum is 10 users, and licenses are counted for each user and shared mailbox whether or not a signature is added.
• Signature 365 is not covered by the 30-day money-back guarantee that Symprex states for its other software.
• Cancelling terminates the subscription at the end of the billing period, and Symprex deletes all related data when a subscription is terminated.

Exclaimer

Server-side and client-side signatures

Every plan can add signatures on the mail server as messages leave, including from phones, or in Outlook and Gmail through an add-in so people see them while typing.

Directory and HR sync

Fills signatures from Entra ID or Google Directory; Pro also syncs from HR systems such as Workday, BambooHR and ADP Workforce Now, or a CSV.

Banners and campaign scheduling

Starter allows one banner; Standard and Pro rotate several and switch designs on a schedule for the length of a campaign.

Targeting rules

Use different signatures for internal and external mail, exclude users or groups, and on Pro target banners at HubSpot or Salesforce lists.

Engagement dashboard

Pro reports click-throughs on signatures and banners and can run A/B tests between designs.

Disclaimers and brand kits

Applies legal disclaimers to every email and keeps logos, colors and fonts in brand kits shared with meeting backgrounds.

Signature 365

Central dashboard

All signatures and campaigns for the company are created, managed and monitored from one dashboard, with a template library to start from.

Segmentation by department

Each department, or individual users, can be given different branding, information and calls to action.

Directory details

Contact details and headshots are pulled from the directory, with social links and banners added to every signature.

Campaigns and analytics

Banner campaigns and surveys can be added to signatures, with tracking of clicks, impressions and conversions plus reports.

Legal disclaimers

Signatures and disclaimers can be created and assigned so that outgoing mail carries required legal text.

Outlook add-in and mail routing

Signatures reach mail either through an Outlook add-in or through email routed via the Signature 365 service, and the vendor says recipients are not prompted to download images.

Exclaimer

• Starter$0.90

  per user / month, billed annually

  One signature template for the whole organization, auto-updated employee details, legal disclaimers, a single banner and 24/5 support.

• Standard$1.45

  per user / month, billed annually

  Unlimited templates, signatures per department, rotating banners, campaign scheduling, advanced targeting and 3 brand kits.

• Pro$1.75

  per user / month, billed annually

  Adds unlimited brand kits, engagement dashboards, HubSpot and Salesforce targeting, LinkedIn and Facebook feeds, HRIS sync and vCards.

• EnterpriseCustom

  Standard or Pro plus a dedicated customer success manager, a tailored onboarding plan and staged rollout help.

Signature 365

• Signature 365$7.52

  per month for 10 users, billed annually ($9.40 billed monthly)

  All features, priced by user count from 10 to 500 users. The page's calculator gives $816 a year for 100 users billed annually, or $85 a month billed monthly.

• Over 500 usersCustom

  Organizations above 500 users are asked to contact Symprex for pricing.

Exclaimer

No public discounts listed.

Signature 365

• Annual discount

  Save 20% with annual billing

  The pricing page labels yearly billing as saving 20% compared with monthly billing.