Creating, editing, deleting, and activating/deactivating webhooks can be done inside of the mailfloss app under the section "API & Webhooks".
To create a webhook click the "Add Webhook" button.
A popup will appear. All fields are required to create a webhook, except webhook secret. The webhook secret is optional and is used to verify webhooks. See section Verifying Webhooks for details. Give the webhook a name, choose your triggers, enter your webhook URL, and choose a source connection from the dropdown. The source can be all sources, CSV files, copy & paste input, or any connected email service provider integration. Once completed, click "Create" to create the webhook or "Create & Activate" to create the webhook and turn it on.
Once you have created some webhooks, they will be listed under "API & Webhooks". From here, you can click the "Edit" link to edit the webhook or flip the switch on/off to activate/deactivate the webhook.
If you click the "Edit" link you will be taken to that webhook's edit page. From here you can make changes to the webhook. Be sure to click "Save webhook" to save the changes.
If you wish to delete a webhook, first visit "API & Webhooks" and click "Edit" on the webhook you wish to delete. You will be taken to the edit webhook page where you can click the "Delete webhook" button to delete the webhook.