Connect FastBill and MailChimp to Build Intelligent Automations
Choose a Trigger
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
Choose an Action
Automatically do this!
Add Note to Subscriber
Add Subscriber to Tag
Update Subscriber
Archive Subscriber
Create Campaign
Create Custom Event
Remove Subscriber from Tag
Delete Subscriber
Find Campaign
Find Subscriber
Send Campaign
Find Customer
Create Tag
Update Subscriber
Find Tag
Campaign Report
Get Latest Chimp Chatter
Add or Remove Member tags
Add Customer
Get Audience
Ready to use FastBill and MailChimp automations
Actions and Triggers
When this happensTriggers
A trigger is an event that starts a workflow.
New Offer
Triggers when a new offer was created within your FastBill account.
New Customer
Triggers when a new customer is created within your FastBill account.
Customer Updated
Triggers when a customer is updated within your FastBill account.
Customer Deleted
Triggers when a customer is deleted within your FastBill account.
New Invoice
Triggers when a new invoice is created within your FastBill account.
Invoice Completed
Triggers when an invoice is completed within your FastBill account.
Do thisActions
Action is the task that follows automatically within your FastBill integrations.
Create Customer
Creates a new customer in FastBill.
Create Invoice
Creates a new invoice.
Add Payment for Invoice
Adds full payment for an invoice.
Send Invoice by Email
Send an invoice by email.
Create Revenue
Creates a revenue entry.
Add Payment for Revenue
Adds full payment for a revenue.
Know More About Fastbill and Mailchimp Integrations
4 Must Try Mailchimp Automation Strategies You Need Today
Discover four Mailchimp automation strategies with viaSocket to convert subscribers, engage event participants, securely store contact data, and keep your CRM up to date.
A Step by Step Guide to Automate Customer Communication
Learn how to automate customer communication with a practical, step-by-step guide. Discover what to automate, the benefits, and simple workflows for timely, personalized messages across email, SMS, and chat.
Best Software for Email Marketing
This quick guide compares leading email marketing platforms—Mailchimp, HubSpot, Campaigner, Brevo, Omnisend, and Zoho Campaigns—covering pricing, features, automation, and audience segmentation.
Step-by-Step Guide to Your First Mailchimp Campaign
Step-by-step guide to creating your first Mailchimp email campaign: audience setup, sender details, subject lines, email design, sending options, and performance tracking.
8 Best Free Email Marketing Tools You Need in 2025
Explore eight top free email marketing tools for 2025. Compare target users, core features, and free plan limits for Mailchimp, Sender, Benchmark Email, Moosend, Brevo, GetResponse, ActiveCampaign, and MailerLite.
Step by step guides to integrate FastBill and MailChimp
Frequently Asked Questions
To start, connect both your FastBill and MailChimp accounts to viaSocket. Once connected, you can set up a workflow where an event in FastBill triggers actions in MailChimp (or vice versa).
Absolutely. You can customize how FastBill data is recorded in MailChimp. This includes choosing which data fields go into which fields of MailChimp, setting up custom formats, and filtering out unwanted information.
The data sync between FastBill and MailChimp typically happens in real-time through instant triggers. And a maximum of 15 minutes in case of a scheduled trigger.
Yes, viaSocket allows you to add custom logic or use built-in filters to modify data according to your needs.
Yes, you can set conditional logic to control the flow of data between FastBill and MailChimp. For instance, you can specify that data should only be sent if certain conditions are met, or you can create if/else statements to manage different outcomes.
About FastBill
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 MoreAbout MailChimp
Mailchimp is an all-in-one marketing platform that helps businesses manage and talk to their clients, customers, and other interested parties.
Learn More
