Short answer:
The error “Signature exceeds maximum length of 10000 characters” occurs because Gmail has a strict limit on signature length. Reduce the size of your signature template in Xink to resolve it.
Error message:
Last Gmail Update: Error, Code (3)

Details
Google.Api.Requests.RequestError
Signature exceeds maximum length of 10000 characters [400]
Reason: InvalidArgument
Google Workspace enforces a maximum limit of 10,000 characters for Gmail signatures. This limit includes all HTML, images (as encoded content), and formatting.
This limitation is defined by Google and cannot be changed by Xink.
How to fix
- Review your email signature template in Xink.
- Reduce the total size by:
- Removing unnecessary text
- Reducing image sizes
- Limiting the number of banners or icons
- Save the updated template.
- Wait for the next sync and verify the signature in Gmail.
