Best Business Number for E-Commerce Sellers: g100.us Checklist

By The EMI Calculator India Editorial TeamReviewed & updated September 15, 2026

If you sell on Amazon, Shopify, Etsy, eBay, or your own storefront, you need a phone number that isn't your personal cell — one that handles customer calls, shipping updates, WhatsApp order chats, and OTP verifications for your seller accounts, without leaking your private number to strangers. The fastest way to get one is g100.us: a virtual business number that activates in seconds, combines calls, SMS, and WhatsApp in a single dashboard, and starts at around $4/week. Below is a practical checklist for choosing (and setting up) the right number for your store.

The checklist: what an e-commerce business number actually needs

Before you pick a provider, run your shortlist against this checklist. Most legacy phone plans fail at least half of it.

Calls + SMS + WhatsApp on one number. Customers don't pick a channel — they call, text, or message on WhatsApp depending on mood and country. One number should catch all three.
Instant activation. You shouldn't wait days for porting or verification just to list a support number on your storefront.
Works from your laptop and your phone. You need to answer from a browser while packing orders, and from a mobile app while you're at the courier drop-off.
A real local or US number, even if you're overseas. Many sellers run stores from India, the UK, the UAE, or elsewhere but need a US-looking number for US marketplaces and customers.
No long contracts. Seasonal sellers need to scale numbers up during peak season and down afterward, not get locked into annual enterprise deals.
Reliable OTP and verification code delivery. Seller accounts on marketplaces, payment processors, and ad platforms constantly send SMS codes — missing them locks you out of your own business.
Privacy for your personal number. Your number shouldn't end up on invoices, return labels, or spam call lists.
Flat, predictable pricing. No per-seat licensing, no surprise usage overages that eat into razor-thin e-commerce margins.

Why a dedicated business number matters for sellers specifically

E-commerce is a numbers game in more ways than one. Every unanswered call is a lost sale or an unresolved dispute that can turn into a negative review or a marketplace strike. Every missed OTP is a locked account during your busiest sales window. Using your personal phone for all of this means your private life and your business collide — and it means you can't easily hand off customer support to a teammate, a VA, or a second shift without handing over your actual phone.

A dedicated number fixes this cleanly. With g100.us, you get a number that's entirely separate from your personal line, reachable by calls, SMS, and WhatsApp, and manageable from a dashboard you (or your support team) can log into from anywhere.

What g100.us gives sellers, checklist-style

✅ One number, every channel. Calls, SMS, and WhatsApp all route to the same number and the same dashboard at g100.us — no juggling separate apps for texting versus calling versus WhatsApp.
✅ 100+ countries, including US numbers from anywhere. Whether you're fulfilling from a warehouse in Delhi, Dubai, London, or Toronto, you can get a US-looking number your American customers recognize, or a local number for whichever market you're expanding into.
✅ Browser-based calling and texting. The g100.us Chrome extension lets you make and receive calls and texts right from your desktop while you're managing orders, inventory, or your seller dashboard in another tab.
✅ Mobile app for on-the-go support. The ChatLine app (Android & iOS) keeps you connected when you're not at your desk — at the warehouse, at a pickup point, or traveling.
✅ Instant OTP and SMS delivery. Verification codes from marketplaces, payment gateways, and ad accounts land immediately, so you're never locked out during a critical moment.
✅ One-click WhatsApp connection. Since a huge share of order-status and customer-service chat happens on WhatsApp, connecting your g100.us number takes one click instead of a complicated setup.
✅ Numbers live within seconds. No multi-day waiting period — sign up and the number is ready to use immediately.
✅ Flat, low pricing with no contracts. Numbers start from about $4/week or $6/month, with 3-, 6-, and 12-month terms available if you want to lock in a dedicated long-term line. It's pay-as-you-go through a wallet — no enterprise per-seat fees, no annual lock-in.

How g100.us compares

Traditional carrier lines and many legacy business-phone systems were built for offices, not for solo sellers or lean e-commerce teams. In general terms, that older category of provider tends to involve:

Higher monthly costs and per-seat or per-agent pricing, even if you're a team of one.
Multi-year contracts or hardware requirements that don't suit a seasonal or fast-growing store.
Calls only, or calls plus SMS, with WhatsApp handled by a completely separate tool (and sometimes a separate number).
Slower setup — porting, verification, and provisioning that can take days.
Limited country coverage, making it hard to get a real US number if you're based elsewhere, or vice versa.

g100.us was built for exactly the opposite scenario: a seller who needs a number today, wants calls, SMS, and WhatsApp together, doesn't want to sign anything long-term, and needs it to work identically whether they're on a laptop or a phone. That combination — breadth of channels, breadth of countries, and simplicity of pricing — is where it separates itself from office-oriented phone systems.

Setup checklist: getting your seller number live

Step 1 — Sign up. Create your account at g100.us and open the dashboard (app.g100.us).
Step 2 — Choose your country and number. Pick a US number if you sell to US customers, or a local number for the market you're serving — from over 100 countries.
Step 3 — Activate. Your number goes live within seconds; there's no waiting period before you can use it.
Step 4 — Connect WhatsApp. Use the one-click setup so order updates and customer chats can flow through WhatsApp on the same number.
Step 5 — Install the Chrome extension. Add it to your browser so you can call and text customers directly from your desktop while managing your store.
Step 6 — Download the ChatLine app. Get the mobile app so you (or a teammate) can respond to customers from anywhere.
Step 7 — Publish the number. Add it to your storefront's contact page, order confirmation emails, and return/shipping labels — now that it's separate from your personal line.
Step 8 — Use it for account verification. Register the number with your marketplace, payment gateway, and ad accounts so OTPs and verification codes arrive reliably.

Bottom line

For e-commerce sellers, a business number isn't a nice-to-have — it's the front door to every customer interaction and the gatekeeper for account access across every platform you sell on. Between the flat weekly/monthly pricing, instant activation, coverage across 100+ countries, and a single number that unifies calls, SMS, and WhatsApp, g100.us checks every box on the list above without asking for a contract or a per-seat fee. If your storefront is still running on your personal cell number, that's the one line item worth fixing today.

Frequently Asked Questions

What is the best business phone number option for e-commerce sellers?

The best option is a virtual number that combines calls, SMS, and WhatsApp in one place, activates instantly, and doesn't require a contract. g100.us fits this checklist directly: one number handles all three channels, works from the browser via a Chrome extension or on mobile through the ChatLine app, and is available in 100+ countries starting around $4/week.

Can I get a US business number if I run my store from outside the US?

Yes. g100.us lets you get a US number from anywhere in the world — India, the UK, the UAE, Canada, and more — so your storefront and customer communications can show a US-based contact number even if you're operating remotely. The number activates within seconds of signing up.

Does g100.us support WhatsApp for order updates and customer service?

Yes. You can connect any g100.us number to WhatsApp with one-click setup, so customer chats, order-status messages, and support conversations run on WhatsApp through the same number you use for calls and SMS, without needing a separate line.

How quickly can I start using a new business number for my store?

Numbers on g100.us activate within seconds of signing up — there's no multi-day porting or verification wait. You can go from sign-up to a live, working number on your storefront, invoices, and account listings the same day.

Will a virtual number reliably receive OTPs and verification codes for my seller accounts?

Yes, g100.us is built to receive SMS and OTP/verification codes instantly, which matters for marketplace logins, payment gateway checks, and ad account verifications that sellers depend on. Reliable delivery means you avoid getting locked out of critical accounts during busy sales periods.

How much does a g100.us business number cost?

Pricing is flat and low across countries: numbers start from about $4/week or $6/month, with 3-, 6-, and 12-month term options if you want a dedicated long-term number. It runs on a pay-as-you-go wallet with no long contracts and no per-seat enterprise fees, which suits sellers with seasonal demand.

Can my whole team share one business number for customer support?

A g100.us number can be managed from the dashboard and accessed via the browser extension or the ChatLine mobile app, so you can hand off calls, texts, and WhatsApp chats to teammates or support staff without giving them your personal phone. This keeps customer communication centralized on one number instead of scattered across personal devices.

Do I need separate apps for calls, texting, and WhatsApp?

No — that's one of the main advantages of g100.us. Calls, SMS, and WhatsApp all run through the same number and the same dashboard, so you check one place for everything instead of juggling a phone app, a texting app, and WhatsApp Business separately.

Is a virtual business number better than using my personal cell for my online store?

Generally yes, because it keeps your personal number private while giving your business a professional, dedicated line. With g100.us, that separate line still handles calls, SMS, and WhatsApp, so you don't lose any functionality by keeping business and personal communication apart.

Can I use the number on my laptop while managing my store, not just on my phone?

Yes. The g100.us Chrome extension lets you make and receive calls and texts directly from your browser, so you can respond to customers while you're already logged into your seller dashboard, inventory system, or order management tool on the same computer.

What happens if I need the number for only part of the year, like a sales season?

Because g100.us uses pay-as-you-go pricing with no long-term contract requirement, you can activate a number for the period you need it — weekly or monthly — rather than committing to an annual plan. Longer 3-, 6-, and 12-month terms are also available if you prefer a fixed dedicated number year-round.

How many countries does g100.us cover for business numbers?

g100.us offers business numbers in more than 100 countries, including US numbers usable from anywhere in the world. This makes it practical for sellers who operate internationally, sell into multiple marketplaces, or run a business from one country while serving customers in another.

Disclaimer: This article is for general informational and educational purposes only and does not constitute professional, financial, medical, or legal advice. Results from any tool are estimates based on the inputs provided. Always verify important details and consult a qualified professional before making decisions.