Signitic does not have a native integration with Hubspot for the moment but if you still want to add your Signitic signatures on your Hubspot profile, here is the steps to follow.
Warning: Every user who wants to have a Signitic signature on Hubspot must follow this guide. The signatures will not be updated every night and so this manipulation is required each time the signature is updated.
1 - Copy the HTML of your signature
Go to the Signitic information edit page here: https://signitic.app/public/change-signature
Log in via Google, Micrososft 365 or via your login key and click on the Copy HTML button.
2 - Add the signature in Hubspot
In your General settings in Hubspot, you should have an Email tab and an Edit email signature button :
Then, just paste your signature in the HTML Editor part and the Signitic signature should now appear in every new email in Hubspot.