Integrate FastBill with Zendesk Sell to automate workflows, sync data between apps, and eliminate repetitive tasks with AI-powered automation.
Update Contact or Company Details in Zendesk Sell when New Offer in FastBill
Stop Sequence Enrollment in Zendesk Sell when New Offer in FastBill
Create Product in Zendesk Sell when New Offer in FastBill
Update Product By ID in Zendesk Sell when New Offer in FastBill
Create a Lead in Zendesk Sell when New Offer in FastBill
Start from a real workflow other teams are already running.
FastBill
When this happens...
New Offer
New Customer
Customer Updated
Customer Deleted
New Invoice
Invoice Completed
Invoice Canceled
Offer Updated
New Contact
Contact Updated
Contact Deleted
Zendesk Sell
Automatically do this!
Update Contact or Company Details
Stop Sequence Enrollment
Create Product
Update Product By ID
Create a Lead
Create Note
List All Leads
List All Contacts
List All Products
List Sequences
List Lead Sources
List All Deals
Enroll In Sequence
Create Contact Or Company
Create Task
Create a Deal
Update Deal
Update Lead
List All Deal Source
List All Notes
List Pipeline Stages
List All Users
Update Contact or Company Details in Zendesk Sell when New Offer in FastBill
Use this flowStop Sequence Enrollment in Zendesk Sell when New Offer in FastBill
Use this flowCreate Product in Zendesk Sell when New Offer in FastBill
Use this flowUpdate Product By ID in Zendesk Sell when New Offer in FastBill
Use this flowCreate a Lead in Zendesk Sell when New Offer in FastBill
Use this flowCreate Note in Zendesk Sell when New Offer in FastBill
Use this flowList All Leads from Zendesk Sell when New Offer in FastBill
Use this flowList All Contacts from Zendesk Sell when New Offer in FastBill
Use this flowList All Products from Zendesk Sell when New Offer in FastBill
Use this flowList Sequences from Zendesk Sell when New Offer in FastBill
Use this flowEverything you can automate between FastBill and Zendesk Sell.
When this happensTriggers
A trigger is an event that starts a workflow.
Triggers when a new offer was created within your FastBill account.
Triggers when a new customer is created within your FastBill account.
Triggers when a customer is updated within your FastBill account.
Triggers when a customer is deleted within your FastBill account.
Triggers when a new invoice is created within your FastBill account.
Triggers when an invoice is completed within your FastBill account.
Action is the task that follows automatically within your FastBill integrations.
Creates a new customer in FastBill.
Creates a new invoice.
Adds full payment for an invoice.
Send an invoice by email.
Creates a revenue entry.
Adds full payment for a revenue.

Follow a simple walkthrough to create, test, and launch your first automation.
Connect your apps
Link the apps you want to automate.
Configure your workflow
Set up triggers, actions, and map your data.
Test & publish
Test your workflow and publish it.
Recognized by leading review platforms and trusted by 10,000+ businesses worldwide.
Just describe the task in plain English. viaSocket AI selects the right apps, builds the workflow, maps the fields, and prepares everything for review before you publish.

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FastBill is a cloud app for German invoicing & accounting. Writing offers and invoices, paying your bills or preparing your tax return is easier than ever with FastBill.
Learn moreElevate your sales process with Zendesk Sell, a powerful sales automation and CRM platform designed to help you close deals faster and build stronger customer relationships.
Learn moreSign up for a free viaSocket account, then authorize both your FastBill and Zendesk Sell accounts. From there, pick a trigger in one app and an action in the other. Your first workflow can be live in under five minutes.
Yes. viaSocket uses instant triggers where available, so data moves between FastBill and Zendesk Sell as soon as the event happens. Scheduled polling triggers run at a maximum interval of 15 minutes.
Yes. You can map specific fields, apply filters to skip records that do not match your conditions, and transform values before they reach Zendesk Sell. No coding required.
Yes. You can set up a workflow where FastBill triggers actions in Zendesk Sell, and a separate workflow where Zendesk Sell triggers actions in FastBill. Both run independently and in real time.
viaSocket logs every run so you can see exactly what succeeded and what failed. Failed tasks can be retried from the dashboard without re-configuring the workflow.
Yes, there is a free plan that covers basic workflows between FastBill and Zendesk Sell. Paid plans unlock higher task limits, faster polling, and advanced features like multi-step workflows and conditional logic.
No. The entire FastBill and Zendesk Sell integration is built through a visual, point-and-click interface. Code blocks are available if you want them, but they are never required.