Relevant Products: Exclaimer Cloud - Signatures for Office 365 | Exclaimer Cloud - Signatures for G Suite
Signatures are processed from left to right, as displayed on your home page. This includes any folders you have configured.
When a message is processed, each signature is checked to see if it applies to the sender of the message - if a match is found, that signature is added.
If required, you can use the re-order option, to change the current processing sequence.