If you are integrating a marketplace (other than eBay) in addition to integrating your PayPal account, it is possible you will see orders duplicate with PayPal transactions. This is caused by using the same e-mail address in the two places in which you use PayPal. In order to separate the PayPal transactions that are not your marketplace orders, you will just need to add a new e-mail address to your PayPal account. (Note: This does not require that you open up a new PayPal account.)
To add a new e-mail account to your PayPal, please do the following:
1. Log into your PayPal account.
2. Go to My Account, and then Profile.
3. Click on Update for the E-mail line.
4. Now, just click on the Add button to add another e-mail account. Please be aware of the e-mail address being used on your marketplace and what you use on your virtual terminal or PayPal invoices. (Note: It does not matter which e-mail is the Primary.)
Once you have added your second e-mail address to your PayPal account, you have two choices: to use the new e-mail address for your marketplace PayPal orders, or to use the new e-mail address for the "outside" PayPal orders (meaning not through your marketplace).
Option 1: I want to use the new e-mail address for my marketplace's PayPal orders
If you use a specific e-mail for all other transactions outside of your marketplace, then the simplest option is to use the new e-mail you created and modify your marketplace settings to make PayPal payments go to the new e-mail address. Then, when you integrate your PayPal account in ShipStation, be sure to use the "Restrict to email address" option and enter your e-mail address like shown below. If you have already integrated your PayPal account with ShipStation, you can edit this by doing the following:
Head to your Account Settings (the gear icon in the upper right).
Next, select Selling Channels and then Store Setup from the sidebar on the left.
Option 2: I want to use the new e-mail address only with my PayPal orders outside of my marketplace
If you do not want to change the e-mail being using for your marketplace payments, then you would simply start using the new e-mail address you added for your other payments such as your website, virtual terminal, PayPal invoices, etc. You can then add this e-mail to ShipStation and use the "Restrict to e-mail address" option as shown above.