Frequently Asked Questions

These FAQs are specific to the API and not to the Infusionsoft interface.

ECommerce (1)

How Do I Refund an Order Through the API?

It is currently not possible to issue a refund via the API.

CRM (1)

How do I access a contact’s Email History?

The tables that store the email history are not available to the API however there are some saved searches that allow you to access parts of the email history

Marketing (1)

Can I access the Campaign Builder with the API?

Currently you can only complete a goal in a campaign using the FunnelService

API (1)

How does throttling work?

The way throttling works depends on which authentication method you are using.


You are limited to a total of 125,000 api calls per day (25 calls per second max) across all Infusionsoft applications you are sending data to.

Legacy API Key

The throttling system is setup like a bank account. You have so many dollars (will be called tokens) in that account you can use. Every Infusionsoft Application has a bank of 10,000 tokens. For every API call that is made, 1 token gets removed from that bank. However, for every 500ms that there is not an API call, you get one token back in the bank, up to the max of 10,000 tokens.

When you run out of tokens, your API call gets delayed 500ms until you get a new token. For instance, you are out of tokens and you have 4 API calls come in at the same time. The first one will be delayed 500ms, the next one 1 second then 1.5 seconds and finally 2 seconds.

Once you hit 4 threads being throttled, you will then start to receive an error stating you have been throttled. The only way to become un-throttled is to cease all API calls. It takes approximately 1.5 hours of no API calls to regenerate all 10,000 tokens. You will recieve the following error:

Server returned a fault exception: [500] Server encountered exception: com.infusionsoft.throttle.ThrottlingException: Maximum number of threads throttled