Third party integrations
Through Squarespace Extensions, you can connect the online store with a selection of third-party apps for shipping, finance, inventory and marketing tools.
Apart from that, merchants can connect with Google products, social media channels (Instagram, Facebook, Pinterest, Twitter), Stripe and PayPal.
A limitation of Squarespace is the fact you cannot sync online sales with Xero, unless you use an extension app which Squarespace does not offer direct support for. You can, however, connect with QuickBooks, FreshBooks and Dext for accounting.
There is no connected POS system available for Squarespace in the UK (there is in the US), so in-person sales cannot be linked to online sales. Other ecommerce platforms like Shopify and Square Online are built to work in unison with a POS system, but Squarespace still mostly focuses on online businesses.