You must have:
administrator access to the Signitic workspace;
the Premium destination connectors add-on;
the HTTPS URL of your Odoo instance, without trailing slash;
the name of the Odoo database;
an API key authorized to read users and modify their signature;
the Odoo identifier if you are using Odoo 16 to 18.
The correspondence between Odoo and Signitic is based on the user's primary or secondary email address. No Signitic user is created automatically.
Open Settings > Connectors > Available in your Signitic account.
Open the Odoo card.
Enter the HTTPS URL of the instance, the API key, and the database name.

Enable I use Odoo 18 or an earlier version for Odoo 16 to 18, then enter the Odoo identifier.
Click Connect.

Signitic tests reading a first user res.users. If the test succeeds, the connector is registered and user synchronization is started.
Odoo 19 and later: leave the Odoo 18 or earlier option disabled. Signitic uses the JSON-2 API with a Bearer API key and database header.
Odoo 16 to 18: enable the Odoo 18 or earlier option. Signitic uses JSON-RPC and requires the database, Odoo ID, and API key.
When signatures are pushed, only active Signitic users are affected. The HTML generated by Signitic then replaces the Odoo signature.
Multiple Odoo connectors can be configured in the same account. Each combination of instance URL + database is independent and the database is displayed on the connector card. A combination already in use cannot be added a second time.
The connection test only verifies reading an Odoo user. It does not guarantee that the API key can write to res.users.signature. If the connection succeeds but signatures are not updated, check the API key's write permissions and email association.
If you already have a signature, be careful as it will be overwritten by the new one.
Check the HTTPS URL, database name, selected version mode, Odoo identifier for versions 16 to 18, and API key permissions.
No. The user must already exist in the Signitic workspace and their email address must match the one in Odoo.
No. It only verifies reading a res.users user. The key must also be able to modify the res.users.signature field for the push to work.
Credentials cannot be modified on an installed connector. Delete the connector and then recreate it with the new parameters.