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EE4 Authorize.Net SIM Payment Gateway, SIM Deprecated

Posted: August 25, 2017 at 12:35 pm


August 25, 2017 at 12:35 pm

Just purchased an account with Authorize.Net to take advantage of your plugin for “EE4 Authorize.Net SIM Payment Gateway”. However, I just found out that Authorize.Net has deprecated the API method SIM and will soon announce the End of Life date. What plugin do you have or will have that will replace the current “EE4 Authorize.Net SIM Payment Gateway”.


August 25, 2017 at 12:36 pm

Here is the link with info on SIM from Authorize.Net


  • Support Staff

August 25, 2017 at 1:02 pm

Hi there,

The Event Espresso plugin includes a built-in payment gateway that uses the supported Advanced Integration Method (AIM). You can follow the set up guide to get started with the AIM gateway:


August 25, 2017 at 2:11 pm

Hi Josh,

What is the differences between using the plugin for SIM vs AIM?

The reason we started using SIM is because we liked the fact that collecting payment information was done on server.

What does SIM provide that AIM will not?


  • Support Staff

August 25, 2017 at 2:34 pm

SIM is an offsite payment method where the user is redirected to a page on where they input their billing information. AIM is onsite where they stay on your site and input the billing information.

There are other supported offsite payment methods for Event Espresso 4 and these include:

PayPal Express

You might also check out Stripe and Braintree which take a different approach where the user stays on your site but the billing information is captured in a embedded form so the credit card information doesn’t hit your server. More information about those options here (Stripe Checkout) and here (Braintree Drop-in).


  • Support Staff

May 2, 2018 at 8:08 pm


The Accept gateway add-on is now available.

The support post ‘EE4 Authorize.Net SIM Payment Gateway, SIM Deprecated’ is closed to new replies.

Have a question about this support post? Create a new support post in our support forums and include a link to this existing support post so we can help you.

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Documentation for Event Espresso 4

Status: closed

Updated by  Josh 8 months, 3 weeks ago ago

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