The first week after a buyer gets portal access determines the habit that follows: order through the portal, or call because the portal was confusing the first time. Here is how to structure onboarding so the portal wins by default.
A buyer who places their first order through the portal without friction tends to keep using it. A buyer who gets stuck — can't find a product, isn't sure their price is right, doesn't know how to reference a PO number — is more likely to just call next time, and the portal quietly stops getting used. Onboarding is not a formality; it is the moment that decides which habit forms.
An invitation email that only contains a login link asks the buyer to figure out what to do next on their own. An invitation that says "log in and place a small order for [specific product they order often]" gives them a concrete first action, and a fast, low-stakes way to confirm their catalog and pricing look right before it matters on a large order.
Check the buyer's first order yourself rather than assuming it went smoothly. Confirm the price matched what you agreed, the right items were visible, and the PO number came through correctly. Catching a catalog or pricing mistake on order one, quietly, costs you nothing. Catching it after a buyer has already called to complain costs you the trust that made the portal worth adopting in the first place.
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