The table below outlines the differences in features between the Client-Side and Server-Side signatures:
Feature |
Client-Side |
Server-Side |
|---|---|---|
| See and select your signatures from your email client | Yes | No |
| Apply signatures to emails sent from any non-mobile device and mail client | No | Yes |
| Apply signatures to emails sent from any Android/iOS device | Yes | No (Android and iOS are supported only on Client-Side when using the Outlook app) |
| HTML Signatures | Yes | Yes |
| Plain Text Signatures | No | No (Plain text emails are automatically converted to HTML) |
| Embedded images | Yes | Yes |
| Web-hosted Images | Yes | Yes |
| Personal signatures when sending as shared mailboxes | Yes | Yes (Send-on-behalf permissions only) |
| Background images with hyperlinks | Yes (Outlook Add-in only) | Yes |
| Additional attributes | Yes | Yes |
| User Photos | Yes | Yes |
| Sent Items are updated with Signature | Yes | Yes |
| Send on Behalf - Choice of Sender or Shared Mailbox Signature | Yes | Yes |
| Send As - Choice of Sender or Shared Mailbox Signature | Yes | No |
| Alias Addresses | Yes (Outlook Add-in only) | Yes |
| Apply Recipient Settings Client-Side | Yes (Outlook Add-in only) | N/A |
| Prevent users from changing signature options (Outlook for Windows only) | Yes (Exclaimer Cloud Signature Update Agent only) | No |
| Remove all existing signatures from Outlook (Desktop Outlook only) | Yes (Exclaimer Cloud Signature Update Agent only) | No |
| Recipient Email Addresses in Feedback Analytics | Yes (Outlook Add-in only) | No |
| Click Tracking Analytics |
Yes |
Yes |
| Other Analytics Features | Yes (Where email is routed to Exclaimer Cloud) | Yes |
| Signature Rules Tester | Yes | Yes |
| Diagnostic Logs | Yes | Yes |
| Seamless Single Sign-On | Yes | N/A |
| Requires Outlook Restart | No (Exclaimer Cloud Signature Update Agent requires Outlook restart on occasion) | No |
| Works for users with on-premises mailboxes | Yes (Exclaimer Exchange Transport Agent) | Yes (requires Exchange On-Premises) |
| Signature Date/Time | Yes | Yes |
| Subject line triggers (Advanced Signature Rules) | No | Yes |
| Body text exceptions (Advanced Signature Rules) | No | Yes |
| Different signature for new messages and replies/forwards | Yes (Outlook Add-in only) | Yes |
| Append multiple signatures on the same email | Yes (Outlook Add-in only) | Yes |
| Headline Content | Yes (Outlook Add-in only) | No |
| QR Codes and vCards | Yes | Yes |
| Facebook Social Feeds | Yes | Yes |
| Campaigns | Yes (Microsoft 365 only) | Yes |
| Disclaimers | Yes (Microsoft 365 only) | Yes |
| Rotating Banners | Yes | Yes |
| User Details Editor | Yes | Yes |
| Advanced Date/Time configuration | Yes | Yes |
| Facebook Social Feed | Yes (Microsoft 365 only) | Yes |
| LinkedIn Social Feed | Yes (Microsoft 365 only) | Yes |
| Salesforce Contacts | Yes (Microsoft 365 only) | Yes |
| HubSpot Integration | Yes (Microsoft 365 only) | Yes |