1
Create an app-specific password
Create one at account.apple.com. Apple explains how in Sign in to apps with your Apple Account using app-specific passwords. Give it a name you’ll recognize later, such as “Billpal”, and copy it.
2
Choose iCloud
In Billpal, go to Settings > Email, click Add, and choose iCloud.
3
Enter your details
In Connect iCloud, enter your iCloud address under Email and paste the password you just created under App password. Display name sets what the inbox is called in Billpal.
4
Set the start date and connect
Use Start date to choose how far back Billpal imports documents. If you send your own invoices by email, also check Also import invoices from your Sent folder. Then click Connect.
If something goes wrong
You can have up to 25 app-specific passwords at once. If you no longer need the one for Billpal, revoke it at account.apple.com. Billpal can’t read the inbox after that.