> For the complete documentation index, see [llms.txt](https://help.checkoutchamp.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.checkoutchamp.com/crm/plugins/email-service-providers/inboxfirst.md).
# InboxFirst
**SETUP Mailing Lists on InboxFirst**
**STEP 1**
Sign in to InboxFirst
**STEP 2**
Click **Mailing Lists** button then click **Create a mailing list** button
**STEP 3**
Create Mailing List following the instruction
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**SETUP Plugins on CRM**
**STEP 1**
Go to Admin->Plugins->Email Service Provides
**STEP 2**
Scroll down to **InboxFirst**
**STEP 3**
Click the green **Activate** button to activate **InboxFirst**
**STEP 4**
Enter **API\_Key** then click the green **Connect** button
**STEP 5**
Click blue edit button
**STEP 6**
Click green **+Route** button
**STEP 7**
Select **Customer Type**, **CheckoutChamp Campaign**, **CheckoutChamp Product**, and **InboxFirst Mailing List** (Which was created on InboxFirst Portal) then click green **Create** button