Short answer:
If an extra blank line appears when switching senders or signatures in Outlook with the Xink Add-in, set an empty local Outlook signature as the default. This issue only affects Classic Outlook for Windows.
This guide addresses an issue where an extra line is added when switching senders or signatures in Outlook with the Xink Add-in.
This issue only occurs in Classic Outlook for Windows.



Why this happens
The issue occurs when Outlook does not have a local default signature assigned.
As a workaround, create an empty signature in Outlook and set it as the default signature.
Workaround
- Open Outlook.
- Go to Signatures.
- Create a new empty signature.
- Set the empty signature as the default for new emails and replies/forwards.
Example:

