SMS API · WhatsApp · USSD · Voice · Live chat · 30+ services

SMS API & Bulk Messaging for United States

Aion Messaging is the prepaid CPaaS for teams in the United States and worldwide: bulk SMS, OTP verification, WhatsApp Business, USSD, voice, and website live chat from one dashboard and wallet.

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1,028+

Messages Sent

36+

Active Customers

30+

Live Services

People sending SMS, chat, and email messages across devices
Channels

One wallet. Every message type.

Start with SMS or live chat today. Expand into WhatsApp, USSD, and voice without changing vendors.

SMS & OTP

Bulk campaigns, transactional alerts, and verification codes with prepaid volume rates.

Learn more →

WhatsApp

Business messaging for support and notifications from the same wallet as SMS.

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USSD

Self-service menus that work on any phone: balance checks, polls, and more.

Learn more →

Live chat

Embed a branded widget on your site and reply from your dashboard inbox.

Learn more →
Products & services

What you can buy and use today

Billable add-ons from your prepaid wallet. See SMS rates and the full product catalog.

Messaging channels

Popular
Branded sender ID

Register your company name for outbound SMS. Required for marketing and trust.

USD 0.454 setup
Start free trial
2-way SMS
Dedicated long number

Two-way SMS inbox on a dedicated number — replies land in your dashboard.

USD 10.896/mo
Start free trial

Marketing & campaigns

Email
Bulk email marketing

Send newsletters and promo emails to contact groups with templates and tracking.

From USD 0.0045/use
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Polls
SMS & USSD surveys

Run polls and collect responses via SMS or USSD with a results dashboard.

USD 9.08 setup
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Bundles
Event SMS packages

Flat-rate SMS bundles for churches, schools, and events — simpler than volume tiers.

From USD 0.3632
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Voice & IVR

Live
Voice alerts (TTS)

Automated voice calls with text-to-speech for OTP backup and urgent alerts.

From USD 0.0227/use
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Bulk voice
Voice broadcast

One spoken message to thousands of numbers — reminders, announcements, alerts.

From USD 0.0272/use
Start free trial
IVR
IVR phone menus

Interactive voice menus — press 1 for balance, 2 for support, with TTS responses.

USD 31.78 setup
Start free trial

USSD & payments

MoMo
USSD payment collection

Collect mobile money payments through USSD menus for fees, donations, and sales.

USD 36.32 setup
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API
Airtime & data vending

Sell airtime and data bundles through your app or USSD — per-transaction billing.

From USD 0.0272/use
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Enterprise
Bill payment via USSD

Utility and subscription bill payments through custom USSD flows.

Custom quote
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Data & validation

HLR
Number lookup & validation

Validate phone numbers before sending — reduce waste and improve deliverability.

From USD 0.0009/use
Start free trial
Data
Contact list cleaning

Remove invalid numbers, duplicates, and opt-outs from your contact groups.

From USD 0.0018/use
Start free trial

Chat & support

Included
Website live chat

Chat widget for your site with dashboard inbox — included on every account.

Included
Start free trial
Pro
Live chat Pro

Remove branding, unlimited agents, file uploads, and export chat history.

USD 0.454/mo
Start free trial
Automation
Chatbot add-on

Auto-reply FAQs on live chat and WhatsApp with keyword triggers and hand-off rules.

USD 0.454/mo
Start free trial

Agency & enterprise

Agency
White-label reseller

Your brand on the dashboard, custom domain, and wholesale rates for agencies.

USD 90.7092/mo
Start free trial
Enterprise
Dedicated campaign manager

Named account specialist to plan and run your monthly messaging.

Custom quote
Start free trial
Compliance
Compliance & sender ID management

We handle NCA paperwork, renewals, and compliance for your sender IDs and short codes.

USD 18.16 setup
Start free trial
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How it works

Go live in under 5 minutes

Prepaid credits, one dashboard, and a REST API when you need automation. No multi-vendor setup.

  1. 01

    Create a free account

    Sign up in minutes. No credit card required to start.

  2. 02

    Top up your wallet

    Add credits via Mobile Money or card in your country currency.

  3. 03

    Send or integrate

    Launch from the dashboard or call the REST API with one key.

  4. 04

    Track & scale

    Delivery reports, campaign tools, and volume rates that improve as you grow.

Create free account API docs
POST /api/v1/sms/send 
// Send SMS via Aion Messaging API
curl -X POST https://aionmessaging.com/api/v1/sms/send \
  -H "X-API-Key: sk_your_api_key_here" \
  -H "Content-Type: application/json" \
  -d '{
    "to": "+233545629414",
    "sender_id": "MYBRAND",
    "message": "Your OTP is 483921",
    "priority": true
  }'

// OTP, USSD, WhatsApp: same wallet & dashboard
Transparent pricing

Pay only for what you use

Prepaid wallet. Same platform for every account. Volume discounts apply automatically.

United States SMS from USD 0.0409/SMS at high volume

Your rate is based on how many SMS you send in the current calendar month: the same logic used in your dashboard when you send. Rates shown in USD (localized for United States) . Volume discounts apply automatically. No plan change needed.

Starter

Under 1,000 / month

USD 0.0557 / SMS

Per message page · prepaid wallet

  • Under 1,000 / month
  • Same dashboard & API for every band
  • Best for testing, OTPs, and smaller campaigns.
Start free
Most common

Standard

1,000 – 9,999 / month

USD 0.0429 / SMS

Per message page · prepaid wallet

  • 1,000 – 9,999 / month
  • Same dashboard & API for every band
  • Automatic discount once you hit this monthly volume.
Get this rate

Business

10,000+ / month

USD 0.0386 / SMS

Per message page · prepaid wallet

  • 10,000+ / month
  • Same dashboard & API for every band
  • Lowest rate for high-volume senders this month.
Start free
See all destination rates Browse add-ons
Built for growing businesses

Campaigns, OTP, and support in one place

Run marketing SMS, verify logins, and chat with website visitors without stitching together three vendors.

Marketing tools See use cases
FAQ

SMS API & bulk messaging questions

Straight answers about routes, pricing, OTP, and getting started in the United States.

Aion Messaging is a prepaid CPaaS for teams in the United States: REST SMS API, bulk SMS, OTP delivery, WhatsApp, USSD, and live chat from one platform with transparent volume pricing in USD.

Rates depend on destination and your monthly send volume. Amounts on the public site are shown in USD for your location. Lower per-SMS prices unlock automatically as volume grows. See the pricing page for live bands.

Yes. Create an account, generate an API key, and send HTTP POST requests to our REST endpoints for OTP, alerts, and bulk campaigns. Full documentation with examples is at /api-docs.

Yes. Verify your email after signup to receive free trial SMS credits in your wallet. No credit card is required to start.

SMS and OTP, WhatsApp Business, USSD menus, website live chat, voice/IVR, email campaigns, and 30+ billable add-ons such as branded sender IDs and dedicated numbers, all from one prepaid wallet.

For marketing and trusted transactional SMS, registering a branded sender ID is strongly recommended in most markets. You can request sender IDs from your dashboard after signup; fees are listed under products.

More help in our help center or contact sales.

Ready to reach customers everywhere?

30+ messaging services: SMS, USSD, WhatsApp, voice, email, and agency tools from one platform.

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