Email signatures are commonly used to display the sender’s name, designation, company information, contact details, website links, and branding elements at the end of an email. A professional email signature helps create a strong identity and improves communication credibility.
Adding an Email Signature in Different Mail Clients allows users to automatically append their signature to every outgoing email instead of manually typing it each time. Most webmail platforms and email applications support both plain-text and HTML email signatures.
This guide explains how to configure email signatures in different mail clients and webmail applications.
Why Email Signatures Are Important
Using a professional email signature offers several benefits:
- Displays contact information clearly
- Promotes company branding
- Adds professionalism to emails
- Provides website and social media links
- Saves time by automating repetitive content
Some email clients also support:
- HTML formatting
- Images and logos
- Hyperlinks
- Electronic business cards
Email Signature in Different Mail Clients and Webmail
Below are the steps to configure email signatures in popular email clients and webmail platforms.
Roundcube
How to Add a Signature in Roundcube
- Login to Roundcube webmail
- Click Settings at the top-right corner
- Select the Identities tab from the left panel
- Double-click the email address you want to configure
- Add your signature in the signature box
- Click Save
How to Add Images in Roundcube Signature
- Go to Settings → Identities
- Select the desired identity
- Enable the HTML Signature checkbox
- Click the HTML source editor icon
- Insert image HTML code:
<p><img src="https://domain.com/imagefilename.jpg" alt="" width="125" height="85" /></p> - Click Update and then Save
Enable HTML Message Composition
- Go to Settings
- Select Composing Messages
- Set Compose HTML messages to Always
- Save the settings
Your signature image will now appear automatically in new emails.
SquirrelMail
Steps to Add Email Signature
- Login to SquirrelMail
- Click Options
- Select Personal Information
- Enter your signature text
- Click Submit
Enable the option to automatically include the signature while composing emails.
Horde
Configure Signature in Horde
- Login to Horde webmail
- Click the Options icon
- Under Your Information, select Personal Information
- Click Edit Your Identities
- Choose the default identity
- Enter the signature text
- Click Create
Horde will confirm the signature update.
Thunderbird
Add Signature in Thunderbird
- Open Mozilla Thunderbird
- Go to Tools → Account Settings
- Select your email account
- Enter the signature text under Signature Text
HTML Signature in Thunderbird
To use HTML formatting:
- Enable the HTML signature option
- Add HTML markup manually
You can also attach:
- HTML files
- Images
- Signature files
using the Attach the signature from a file option.
Outlook
Create an Email Signature in Outlook
- Open Microsoft Outlook
- Create a new message
- Go to Message → Signature → Signatures
- Click New
- Enter a name for the signature
- Add your signature content
- Click OK
Add Images or Links in Outlook
You can include:
- Images
- Hyperlinks
- Electronic business cards
using the formatting toolbar inside the signature editor.
Automatically Insert Signature
- Open Signatures settings
- Under Choose default signature, select the email account
- Choose the default signature for:
- New messages
- Replies and forwards
Windows Live Mail
Configure Email Signature
- Open Windows Live Mail
- Click File → Options → Mail
- Open the Signature tab
- Click New
Add Signature Content
You can:
- Add plain-text signatures
- Attach HTML signature files
- Add images
Enable:
Add a signature to all outgoing messages if you want automatic signatures for all emails.
Mac Mail
Create a Signature in Mac Mail
- Open Mail Preferences
- Go to the Signatures section
- Click the + symbol
- Add the signature text
Add Images and Links
You can drag and drop:
- Images
- vCard files
directly into the signature editor.
Mac Mail automatically converts domain names into clickable links.
Set Default Signature
- Open Default Signatures
- Select the desired signature for each email account
- Save the changes
Tips for Creating Professional Email Signatures
A good email signature should include:
- Full name
- Job title
- Company name
- Phone number
- Website URL
- Social media links
Avoid:
- Excessive images
- Large file sizes
- Too many colors or fonts
Simple and professional signatures work best.
Benefits of Using Email Signatures
Using Email Signature in Different Mail Clients helps:
- Maintain branding consistency
- Improve business communication
- Increase website visibility
- Provide quick access to contact details
- Save time while sending emails
Professional email signatures also create a stronger impression on clients and customers.
Conclusion
Configuring Email Signature in Different Mail Clients and webmail platforms is a simple but important step for professional communication. Most email clients such as Roundcube, Horde, Thunderbird, Outlook, and Mac Mail support customized signatures with text, images, and HTML formatting.
By setting up automatic email signatures, users can improve branding, maintain consistency, and enhance the overall appearance of their business communications.
If you require help, contact SupportPRO Server Admin

