Overview
WiseStamp offers two main methods to add signatures to your email platform:
Client-side deployment – Adds the signature during email composition
Server-side deployment – Adds the signature after the email is sent
WiseStamp also provides Hybrid mode, which combines both methods.
These deployment methods determine when a signature is applied, which directly impacts preview, consistency, and device coverage.
Client-side deployment (pre-send signatures)
Client-side signatures are applied during the composition of a new email message.
WiseStamp synchronizes the signature to the user’s browser or desktop email app, including Gmail, Outlook, and Apple Mail. The signature is applied based on the installed integration.
Examples of client-side behavior
Outlook Add-in – Applies signatures in Outlook web and desktop
Google integration – Applies signatures in Gmail web and iOS
Google Connect – Applies signatures in Gmail web, desktop, and mobile for individual users
Key characteristics
Signature preview before sending
Depends on installed integrations (extension, add-in, desktop app)
Applied per device and per email platform
Supported platforms and client-side deployment options
Gmail (not Google Workspace) – Google Connect, Chrome Extension, Copy/Paste
Google Workspace – Google Workspace Integration, Copy/Paste
Outlook for web – Chrome Extension, Copy/Paste, Outlook Add-in
Outlook 365 – Outlook Add-in, Copy/Paste
Outlook desktop (including Google accounts) – Desktop App, Copy/Paste, Outlook Add-in
MacMail (including Google accounts) – Desktop App, Copy/Paste
Yahoo Mail – HTML code, Copy/Paste
GoDaddy – Copy/Paste, Outlook GPO
Other mail platforms – HTML code, Copy/Paste
CRM email-based platforms – Copy/Paste, Server-side solution
Note: The WiseStamp Chrome Extension works only with Gmail and Outlook Web. It is not available for Yahoo Mail, Hotmail, or any other email platform, and it does not appear as an option under Other in the Employee Hub. For those platforms, use HTML code or Copy/Paste.
To learn about specific tools like the Chrome Extension or the Desktop App, see Signature Integrations Comparison.
Server-side deployment (post-send signatures)
Available on:
Legacy plans – Basic, Plus, Enterprise
Current plans – Platform, Enterprise
How server-side deployment works
Server-side signatures are applied after the email is sent using WiseStamp’s cloud service.
The signature is added before delivery and is visible to all recipients, regardless of the device or platform used to send the email.
Server-side email flow
Email is sent
It passes through your mail server (Google or Microsoft)
The message is routed to WiseStamp
The signature is added
The email is delivered
Key characteristics
Works across all devices and email clients (desktop, mobile, CRM)
No apps, extensions, or add-ons required for users
Requires mail server configuration
Benefits
Consistent email signatures across all outgoing emails
Always applies the latest signature version
Supports any email platform and CRM system
Important: Server-side deployment does not provide signature preview before sending.
Server-side security
No email content is stored
No semantic understanding of message content or attachments
Requests are processed per account (tenant)
Complete isolation between accounts
Hybrid deployment (client-side + server-side)
How hybrid deployment works
Hybrid mode combines client-side and server-side deployment:
Client-side applies the signature first
Server-side applies a signature only if no WiseStamp signature is detected
Key characteristics
Prevents duplicate email signatures
Ensures full signature coverage across devices and platforms
Maintains secure and reliable email delivery
Availability
Hybrid mode is available with automatic installations, including:
Outlook Add-in
Desktop App
Google Workspace integration
Use cases
Users sending emails from desktop and mobile devices
Organizations using multiple email clients or platforms
Teams needing preview + full coverage
Tip: Hybrid deployment is ideal when client-side signatures are already in use but mobile or CRM coverage is missing
Learn how to combine integrations for hybrid setups in Signature Integrations Comparison.
Deploy signatures to a single email account
WiseStamp supports quick deployment for individual users:
Gmail (not Google Workspace) → Google Connect, Chrome Extension, or Copy/Paste
Outlook Live → Outlook deployment
Yahoo → Other platform deployments (HTML code or Copy/Paste)
Install signatures on other email platforms
For email platforms other than Gmail or Outlook, WiseStamp provides two installation methods: HTML code and Copy/Paste. Both are available in the Employee Hub under Install > Other.
Supported platforms and methods
Yahoo Mail – HTML code, Copy/Paste
MixMax – HTML code
GoDaddy – HTML code, Copy/Paste
Horde – HTML code, Copy/Paste
Hotmail – HTML code, Copy/Paste
Mail.com – HTML code, Copy/Paste
Walla – HTML code, Copy/Paste
Yandex – HTML code, Copy/Paste
Method 1: Install using HTML code
Use this method if your email platform supports HTML signatures.
Navigate to Employee Hub
Click Install on the relevant signature
Click Other
Under Install your signature with, select HTML Code
Click the Copy icon
Then:
Open your email client settings
Locate Signature or Email Signature
Select the option to insert HTML code
Paste the copied HTML
Click Save or Apply
Compose a new email to verify the signature
Method 2: Copy and paste the signature
Use this method for platforms that support HTML formatting.
Navigate to Employee Hub
Click Install on the relevant signature
Click Other
Select Copy/Paste
Click the Copy icon
Then:
Open your email client settings
Locate Signature or Email Signature
Paste the copied signature
Click Save or Apply
Compose a new email to verify the signature
Tip: Signatures added with HTML code or Copy/Paste do not update automatically. When you edit your signature in WiseStamp, copy it again and repeat the steps above to apply the new version.
FAQs
What is client-side vs server-side deployment?
What is client-side vs server-side deployment?
Client-side deployment adds signatures during email composition and allows preview. Server-side deployment adds signatures after sending and ensures consistency across all devices.
Can I use the Chrome Extension with Yahoo Mail or another email platform?
Can I use the Chrome Extension with Yahoo Mail or another email platform?
No. The WiseStamp Chrome Extension works only with Gmail and Outlook Web. It is not available for Yahoo Mail, Hotmail, or other email platforms, and it does not appear as an option under Other in the Employee Hub.
To add your signature to Yahoo Mail or another platform, go to Employee Hub > Install > Other and select either HTML Code or Copy/Paste.
When should I use hybrid deployment?
When should I use hybrid deployment?
Use hybrid deployment when you need both signature preview and consistent signatures across mobile devices, CRMs, and multiple platforms.
Does server-side deployment require installation?
Does server-side deployment require installation?
No. Server-side deployment does not require apps or extensions but does require mail server configuration.
Does WiseStamp store email content?
Does WiseStamp store email content?
No. WiseStamp does not store or read email content and processes messages securely per account.