The best WhatsApp Business API provider for a Singapore business depends on whether you need a full omnichannel inbox or just WhatsApp automation at the lowest running cost. For WhatsApp-first SMEs, a per-message platform such as RichAutomate (from US$9, about S$12, a month) is usually the cheapest to run. SleekFlow and respond.io suit larger multi-channel teams, and Twilio or 360dialog suit companies with their own developers.
This guide compares five providers that Singapore businesses shortlist most often, using only the prices each company publishes on its own website. Every figure is dated, because SaaS pricing changes often. Meta's own message charges come on top of every option below, so the real comparison is about what each provider adds.
Quick answer: which provider fits which Singapore business
- WhatsApp-first SME (retail, F&B, clinics, tuition centres, property agents): choose a low monthly plan with a per-message fee and Meta billed at cost, such as RichAutomate.
- Multi-channel support team (WhatsApp plus Instagram, Messenger, email and web chat in one inbox): SleekFlow or respond.io, if the budget covers S$200+ a month.
- Developers building WhatsApp into their own app: Twilio (pay per message) or 360dialog (flat fee per number), which give you the API without a ready-made inbox.
Singapore WhatsApp API providers compared (November 2026)
| Provider | Entry price (as listed) | Provider fee on messages | Best for |
|---|---|---|---|
| RichAutomate | US$9/month (about S$12), monthly billing; plan fee credited to your wallet | US$0.002 per message + US$0.004 per 24-hour window; Meta bills its charges to your own card at cost | WhatsApp-first SMEs on a budget |
| SleekFlow | Pro S$209/month billed yearly (3 seats, 500 monthly active contacts); WhatsApp number hosting S$19/month | Per SleekFlow's rate card | Omnichannel sales and support teams |
| respond.io | Starter US$79/month billed yearly, or US$99 monthly; Growth US$159 yearly / US$199 monthly | Not included in the subscription; Meta charges based on usage | Larger support teams that need workflows across channels |
| Twilio | No monthly platform fee listed | US$0.005 per message, inbound or outbound, plus Meta's fee | Developers who want a pure API |
| 360dialog | €49 per number per month (Regular); €99 (Premium) | No markup on Meta fees, as stated on their pricing page | Developers and agencies building their own tools |
Sources: each provider's public pricing page. SleekFlow prices were checked on 29 October 2026 from its Singapore page. respond.io, Twilio and 360dialog prices were checked on 7 November 2026. Verify on their sites before you buy, because list prices and promotions change.
What you pay Meta in Singapore, whichever provider you pick
Meta charges per delivered template message, and the rate depends on the recipient's country and the message category. For Singapore recipients, Meta's October 2026 rates are about US$0.0732 per marketing message and US$0.016 per utility or authentication message. That is roughly S$0.094 and S$0.020 at S$1.28 to the US dollar.
Some providers pass these fees through at cost and some bundle them into their own rate card. When you compare quotes, ask each provider one question: "Is the Meta fee billed to my own card at cost, or resold to me with a markup?" At 20,000 marketing messages a month, even a 10% markup adds about US$146 a month. You can model your own volume with the WhatsApp API cost calculator.
Worked example: 5,000 marketing messages a month
Take a Singapore retailer that sends 5,000 promotional messages a month to opted-in customers and uses one WhatsApp number. Meta's share is about US$366 (5,000 × US$0.0732) on every platform. Here is what the providers add on top:
- RichAutomate Starter: US$9 plan (credited to the wallet) plus 5,000 × US$0.002 = US$10 in message fees, plus US$0.004 for each 24-hour window opened. That totals roughly US$20–30 before Meta.
- Twilio: 5,000 × US$0.005 = US$25 before Meta, with no inbox included. You build or buy your own.
- 360dialog Regular: €49 for the number, plus your own front-end or a partner tool.
- SleekFlow Pro: S$209 a month billed yearly, plus S$19 for WhatsApp number hosting, plus message fees per their rate card.
- respond.io Starter: US$79 a month billed yearly (US$99 monthly), with WhatsApp fees on top.
For a team that only needs WhatsApp, the gap between a per-message platform and an omnichannel suite works out to roughly S$70–200 a month. If you need Instagram, Messenger and email in the same inbox, a suite can be worth that money. See our WhatsApp API pricing for Singapore in SGD for the full plan breakdown.
Get the India 2026 WhatsApp BSP price comparison
Wati vs AiSensy vs Interakt vs RichAutomate: Meta rates, platform fees and hidden costs, side by side. We send it to your WhatsApp in a minute.
Try it on your own number: RichAutomate has no setup fee and a 14-day free trial. Start your free trial and send your first approved template the same day.
How to choose: six checks before you sign
- Official access. The provider must run on the official WhatsApp Business Platform (Cloud API). Avoid "unofficial API" tools that automate the WhatsApp app, because numbers get banned and you have no recourse.
- Meta billing model. Find out whether Meta fees are billed to your card at cost or resold with a markup. This is the single biggest running-cost difference.
- Contract terms. Many suites quote yearly billing for their headline price. Check the monthly price if you want the freedom to leave.
- Seats and contacts. Per-seat and per-monthly-active-contact limits can double your bill in a campaign month. Ask what happens when you go over.
- PDPA and DNC fit. You need opt-in records, easy opt-out handling and the ability to suppress numbers on the Do Not Call registry where it applies. Our Singapore WhatsApp API guide on PDPA, pricing and setup covers the rules.
- Number ownership. Your verified number and display name should stay yours if you switch provider. Ask how migration works before you commit.
Provider notes
RichAutomate
An official WhatsApp Business Platform tool with broadcasts, keyword auto-replies, a visual chatbot flow builder, a shared team inbox and a developer API. Plans are billed in US dollars at US$9, US$15 and US$19 a month (Starter, Pro and White-label). The full plan amount goes into your wallet as message credit, and Meta bills its fees to your own card at cost. It suits teams that live on WhatsApp and want predictable costs. It is not an omnichannel suite.
SleekFlow
A strong omnichannel inbox with a large presence in Singapore and Hong Kong. Its headline Singapore prices are billed yearly and include contact and seat limits, and WhatsApp number hosting is a separate line item. If your only channel is WhatsApp, compare it with a lower-cost SleekFlow alternative for Singapore.
respond.io
Built for support and sales teams that handle many channels with workflow automation. Its pricing page states that WhatsApp fees are not included in any subscription. The entry plan sits well above WhatsApp-only tools, which makes sense if you will use the multi-channel workflows.
Twilio
A developer platform. You pay US$0.005 per WhatsApp message in either direction on top of Meta, and you write the code or plug in a third-party inbox. It is a good fit if WhatsApp is one feature inside your own product.
360dialog
A Meta partner focused on API access. It charges a flat fee per number and states no markup on Meta fees. Like Twilio, it expects you to bring your own interface or use a partner tool.
Selling in the Gulf too? Our best WhatsApp Business API providers in the UAE guide compares the same five platforms on AED prices.
Already on respond.io and weighing a switch? Our respond.io alternative for Singapore compares plan fees, seats and Meta charges side by side.
Expanding to Dubai? Compare SleekFlow pricing in the UAE against a WhatsApp-first plan.
Bottom line
Singapore businesses pay the same Meta rates everywhere. What changes is the provider's subscription, seat and contact limits, and whether Meta fees are marked up. If WhatsApp is your main channel, start with a per-message platform and move up to a suite only when you need more channels. Compare all markets in US dollars on our international WhatsApp API pricing page, or see the India rupee plans on RichAutomate pricing.
Ready to go live in Singapore? Create your free RichAutomate account. There is no setup fee and no yearly contract, and Meta bills you directly at cost.