01
WiseStamp
Directory-synced signatures for Microsoft 365 and Google Workspace with SSO, brand locking and campaign analytics.
96.0
WiseStamp is the top pick for mid-market and enterprise teams that want directory-synced signatures across Microsoft 365 and Google Workspace, with SSO, brand locking and campaign analytics. Exclaimer suits large enterprises that need server-side insertion, compliance and legal disclaimer control. CodeTwo is the strongest fit for Microsoft 365 and Exchange estates, adding signatures in transit so mobile mail is covered. Opensense appeals to marketing teams that want the signature to work as a measurable campaign channel alongside central management.
RANKENTRYSCORETRENDFROM
1
WiseStampUsed by 80,000+ companies and rated 4.6/5 from 581 reviews on G2.96.0NEW$19/mo + $1/employee
WiseStampUsed by 80,000+ companies and rated 4.6/5 from 581 reviews on G2.96.0NEW$19/mo + $1/employee2
ExclaimerServer-side signature insertion across Microsoft 365, Exchange and Google Workspace95.0NEWCustom
3
CodeTwo Email SignaturesPurpose-built for Microsoft 365 and Exchange, with signatures added in transit92.0NEWCustom
4
OpensenseTurns the signature into a measurable marketing channel with banners and click analytics89.0NEWCustom
5
Crossware Mail SignatureRules engine controls which signature each sender and recipient receives86.0NEWPer user, per month
8
NewoldstampDrag-and-drop builder with dynamic content and multi-client support77.0NEW$2.00 per month
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The ranking, in detail
02
Exclaimer
Exclaimer applies signatures server side, so every message gets the right signature regardless of the device it was sent from. Central control of disclaimers, campaign banners and per-department rules make it the default for large Microsoft estates.
95.0
03
CodeTwo Email Signatures
CodeTwo specialises in Microsoft environments, adding signatures in transit so they appear on mail sent from phones and Outlook alike. Strong rule-based targeting and a straightforward per-user licence.
92.0
04
Opensense
Email signature management and signature-based marketing for enterprise
Opensense covers the management side across Microsoft 365, Google Workspace and Salesforce, then goes further by making the signature a campaign surface with targeted banners and reporting on clicks.
89.0
05
Crossware Mail Signature
Centralised signature management for Microsoft 365, Exchange and HCL Domino
Crossware handles complex estates: per-sender and per-recipient rules, multi-platform coverage including HCL Domino, and server-side application so nothing depends on the user's client.
86.0
06
Xink
Email signature management for Microsoft 365, Outlook and Google Workspace
Xink keeps signatures accurate by pulling names, titles and numbers from the directory, then deploys across Microsoft 365, Outlook and Google Workspace with department-level banner targeting.
83.0
07
Letsignit
Email signature manager and brand governance platform
Letsignit is aimed at marketing teams that need the signature locked to brand: centralised templates, governance over what individuals can change, and scheduled banner campaigns with tracking.
80.0
08
Newoldstamp
Newoldstamp is the accessible end of centralised management: a visual builder, dynamic fields and campaign banners, without the server-side setup the enterprise tools require.
77.0
09
Bybrand
HTML email signature manager for teams at scale
Bybrand focuses on getting HTML signatures onto a team quickly, with a clear editor and direct deployment integrations. Priced per signature, which suits teams that only need a handful.
74.0
10
Signitic
Centralised email signature management with campaign banners
Signitic syncs from Microsoft 365 or Google directories so signatures update themselves as people change roles, and schedules banner campaigns per team.
71.0
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Positions 1, 2 and 3 are available to buy for twelve months. Everyone below moves down a place, and the bottom entry comes off.
Frequently asked questions
What is the typical implementation timeline for email signature management software?
Implementation timelines vary: lightweight solutions like Newoldstamp, Bybrand or WiseStamp can deploy within days to a week for smaller teams, whilst server-side platforms like Exclaimer, CodeTwo or Crossware typically require 2-4 weeks including testing, training, and rollout across the organisation.
Which email clients and platforms do these solutions support?
Most modern platforms support Microsoft Outlook (desktop and web), Google Workspace Gmail, Apple Mail, and mobile clients. Exclaimer and Crossware offer the broadest compatibility, including HCL Domino in Crossware's case; CodeTwo excels specifically with Microsoft 365; Bybrand and WiseStamp deploy client side, so mobile signatures need setting up per device.
How do email signature management tools help with compliance and legal requirements?
These platforms enforce consistent legal disclaimers, jurisdiction-specific notices, and regulatory text automatically across all employee emails. They maintain audit trails of signature usage, provide version control, and ensure that all outgoing messages include required corporate information such as company registration details.