---
title: "Test both sides of a marketplace with test accounts · Proxy Mail QA"
description: "Check listings, orders, messages, cancellations, refunds and reviews, and the emails buyers and sellers each get, with a test account for every side of your marketplace."
url: https://proxymail.qa/use-cases/marketplaces
---

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# Testing both sides of a marketplace

Almost everything in a marketplace sends an email to someone else: an order to the seller, a reply to the buyer, a review request to both. You can only check those with an account on each side, signed in at the same time.

Updated October 13, 2026

## The accounts you need

| Account      | Side                           | What it checks                                                   |
| ------------ | ------------------------------ | ---------------------------------------------------------------- |
| Seller       | Lists items, rooms or services | Listing approval, new-order and message emails, payouts          |
| Buyer        | Buys or books                  | Order confirmation, messages, updates and review requests        |
| Second buyer | Wants the same thing           | Stock and double-booking rules, and “no longer available” emails |
| New seller   | Just signed up                 | Onboarding, checks and any limits on new sellers                 |
| Moderator    | Admin or support               | Reports, disputes and takedowns, and the emails they trigger     |

## Set them up

1. **Create the set in one go**: choose **Add account**, set **How many**, label the batch “Marketplace” and tick **Generate persona**.
2. **Sign up as each** and finish seller onboarding with test details on staging.
3. **Tag each address with its side**, such as `buyer`, `seller` or `moderator`, and save its password on the address.
4. **Open two browser profiles side by side**, one for the buyer and one for the seller.

## What to check

- **Orders:** an order or booking reaches the seller at once, and the buyer’s confirmation matches it: item, price, dates.
- **Messages:** a message reaches the other side by email when they’re away, without showing either person’s real email address if your marketplace hides them.
- **Stock and calendars:** two buyers can’t take the last item or the same slot.
- **Cancellations, refunds and disputes** tell both sides the same facts.
- **Reviews:** both sides are asked once, after the order is complete, and not before.

## The emails to check

For the seller: new order, new message, payout and review received. For the buyer: confirmation, shipped or booked, new message, refund and review request. Open both inboxes after each step and check they tell the same story.

Use these accounts only on a marketplace you build or are allowed to test, in development, staging or QA.

## Try it on your next sign-up test

Free plan, no credit card. Create an address and watch the code or link arrive.

[Create a free account](https://app.proxymail.qa/?mode=signup)

## Questions

### How do I sign in as buyer and seller at once?

Use two browser profiles, or a normal and a private window, one signed in as each. Each account's emails land on its own row in Proxy Mail QA, so you can follow a conversation from both ends.

### How many accounts do I need?

Usually four or five: a buyer, a seller, a second buyer for competing orders, a brand-new seller, and a moderator if your marketplace has one. The same set works for hosts and guests, clients and freelancers, or drivers and riders.

### Can I test payments and payouts?

Use your payment provider's test mode on a staging copy of your marketplace. The order, payout and refund emails your app sends arrive like any other.

## Related guides

- [Test age gates and age-restricted contentOne account per age band, from under 13 to turning 18 tomorrow, with parental consent emails and each date of birth noted.](https://proxymail.qa/use-cases/age-restricted-content)
- [Test content that depends on locationAn account per country for geo-blocked content, regional prices, tax and consent, and a traveller who crosses a border.](https://proxymail.qa/use-cases/location-based-content)
- [Test predictor game scoringA player for every scoring rule, with picks and expected points in the notes, so the leaderboard proves the rules work.](https://proxymail.qa/use-cases/predictor-games)
- [Test membership tiers and paywallsFree, trial, paid, top-tier and lapsed accounts, and every subscription email from welcome to payment failed.](https://proxymail.qa/use-cases/membership-tiers)
- [Test roles and permissionsOwner, admin, editor, viewer, removed user and another customer’s admin, each invited by email and signed in for real.](https://proxymail.qa/use-cases/roles-and-permissions)
- [Test ticket ballots and prize drawsEnough entrants for some to win and some to lose, with priority members, duplicates, and a winner who never pays.](https://proxymail.qa/use-cases/ballots-and-prize-draws)
- [Test referral rewards and welcome offersReferrer, friends and first-time customers, plus the self-referral and repeat claims your rules should refuse.](https://proxymail.qa/use-cases/referrals-and-welcome-offers)
- [Test email changes, lockouts and account deletionAn old and a new address for change of email, plus accounts to lock out, reset, protect with codes and delete.](https://proxymail.qa/use-cases/account-changes)
- [Test email preferences and unsubscribeAn account per preference setting, to prove opted-out users get nothing and unsubscribe works in one click.](https://proxymail.qa/use-cases/email-preferences)

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