Sending transactional emails using triggers from Stripe

Hi,

I want to set up automation where I'll be sending emails to my clients thanking them for purchasing a subscription. I sell the subscription using Stripe. I've connected Stripe with Intercom. I want the trigger for sending the email to be the purchase of the subscription by a new client. I'm setting this up using the 'series' option in Intercom, but I'm having trouble choosing the trigger. On the list, I have the option 'Created subscription', but I'm not sure if this pertains to Stripe as there's no information indicating it's a Stripe trigger. Additionally, I have 'Stripe subscription period start at', but choosing this I'm not sure if the email will be sent immediately after the subscription purchase.

I'd also like different emails to be sent depending on the type of purchased subscription. With the 'Created subscription' option, I have the ability to define the subscription name, in my case, for example, 'Starter - social media' (I sent an example in the screenshot). But I'm uncertain if it will work the way I want, meaning, if someone purchases the 'Starter - social media' subscription, will this trigger act accordingly.

I'd greatly appreciate your help :)