Categories and search
The home screen shows big category tiles, featured ads near the user and the newest posts. Search works across the city, and filters narrow by price, year, distance and type.
Portfolio · Postbay
Postbay: Classifieds Portal and App Design
Postbay is a classifieds portal designed and built by our team. People post ads by category, chat with buyers or sellers, and pay to feature an ad. A moderation team checks every ad for scams before it goes live.
Online classifieds and local marketplace
Web portal + mobile app + admin moderation
Web · Android · iOS
Postbay · admin
Postbay was designed and built by the PRS CloudTech team.
3
Apps
3
User roles
5
Screens shown
Checked first
Every ad
The brief
What a classifieds portal needs
People still buy and sell a lot through classified ads: used bikes, phones, furniture, flats for rent and local jobs. But a free-for-all notice board turns into a mess fast, with duplicate ads, wrong categories and scam offers.
Buyers lose trust when a deal that looks too good turns out to be a trick. Sellers lose time when messages come from people who are not serious. The people who run the portal are stuck deleting bad ads by hand.
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1
Quick ad posting
A seller should be able to add photos, a title and a price in a few minutes from a phone.
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2
Easy search
Buyers need clear categories, city filters and fresh posts at the top.
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3
Safe contact
Chat in the app and a phone-verified tag should help buyers and sellers feel safe.
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4
Strong moderation
The team must catch scams and banned items before they go live, without checking every ad by hand.
What we designed
Inside Postbay
Postbay keeps posting fast for sellers and checking strict for the team.
Ad page
Each ad shows photos, price, key facts such as year and distance driven, and a clear description. The seller card shows how long they have been a member and whether the phone is verified.
Chat and phone
Buyers can chat inside the app or ask to see the seller's phone number. A short safety note reminds both people to meet in a public place and never pay before seeing the item.
Posting in four steps
Sellers add photos, then details, then a place and phone number, and last they preview and post. A switch lets them feature the ad for a set number of days.
Moderation queue
New ads pass a first check for signs of trouble, such as a low price, copied photos or a request to pay first. Doubtful ads wait in a queue with the reason shown, so the team can approve or remove them in one click.
Featured listings
Sellers can pay to boost an ad, feature it with a tag or show it on the home page. The admin sets the plans and sees sales by week and the best categories.
Screens
How Postbay looks
The mobile app
How it works
Key journeys, step by step
Here is how the main tasks work in the app, from posting an ad to a safe sale.
Post an ad
The seller takes photos, fills in the title, price and details, adds a place and phone, and posts. The ad goes into the check.
Find and ask
A buyer opens a category, filters by price and distance, opens an ad and starts a chat with the seller.
Get more views
The seller chooses a featured plan for the ad and pays by UPI. The ad shows higher in the list with a Featured tag.
Keep it clean
The moderator opens the queue, reads the reason for each flag, approves good ads, removes bad ones and blocks sellers who repeat.
Suggested technology
Laravel
MySQL
Flutter
Elasticsearch
Redis
Razorpay and UPI payments
What we would deliver
Product planning
UI/UX design
Web app development
Mobile app development
Moderation tools
Payment integration
FAQ
Questions about building a product like Postbay
What is a classifieds portal?
It is a website and app where people post ads for things they want to sell, rent or offer, such as bikes, phones, flats and jobs. Other people search the ads and contact the seller.
Which features should a classifieds portal launch with?
Start with ad posting, categories with city filters, in-app chat and a moderation queue. Featured listings, saved searches and seller badges can follow once ads start coming in.
Can you build a classifieds portal like this for my business?
Yes. We can build the website, the Android and iOS apps and the admin panel, with your own categories, cities, languages and paid plans.
How are scam ads kept out?
A first check looks for signs such as a very low price, copied photos or a request for money first. Doubtful ads wait in a queue where a person approves or removes them. Repeat offenders are blocked.
How does the portal earn money?
Sellers can pay to feature an ad, show it at the top of a category or place it on the home page. The admin sets the plans and sees the sales by week.
#classifieds-portal
#classified-ads-app-development
#online-classifieds-script
#ad-posting-website
#featured-listings-software
#local-marketplace-app
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