Channels
Which channels can one message go out on?
The same message can go out over SMS, WhatsApp, Viber or RCS — in one list, with the same contact base and the same delivery report.
SMS
Ordinary text messages to any US or international number.
Messages and replies on the WhatsApp Business channel.
RCS
Richer messages carrying your brand, images and buttons.
Inside 3CX
Receive SMS directly in 3CX and reply from the same interface as calls.
Use cases
What do businesses use the SMS center for?
Appointment reminders, order updates, one-time passcodes, promotions and customer service — automated through the API or sent by hand from the panel.
- Automated scenarios: sign-ups, orders, reminders, OTP codes, customer service
- Marketing campaigns by audience, city, behavior or purchase history
- Personalized messages with names, order numbers or any variable
- SMS after a missed call and survey texts
- High delivery rates on optimized carrier routes
Features
What is in the platform?
Everything you need to scale business messaging securely.
Real-time dashboard
Messages sent, success rates and balance in real time, with daily, weekly and monthly charts.
Bulk SMS from Excel/CSV
Compose with variables, schedule, and remove duplicates automatically.
Contact management
Segment contacts by region or type; import and export with duplicate detection.
Automatic opt-out
The system recognizes STOP replies, adds the number to the blacklist instantly and blocks further messages.
Anti-spam filtering
Block unwanted senders and keep API sending secure with filter rules.
Inbound numbers
Dedicated numbers for campaigns, auto-replies and the full inbound history; forward inbound SMS to a webhook or CRM.
REST API
Clean endpoints, webhooks and developer documentation; integrate with your own systems.
Business-grade security
Two-factor authentication, secure sessions, audit logs and data encryption.
Billing control
Transparent pricing, real-time balance and automatic invoicing.
Advanced
What else can the platform do?
AI integrations
Smart replies, sentiment analysis and send-time optimization.
Workflow builders
Visual automated flows with conditional branches and event-triggered chains.
OTP / verification
Managed one-time passcodes with expiry limits and attempt throttling.
White-label
Your own logo, colors and domain — deliver messaging under your brand.
CRM integrations
Ready-made and custom integrations with HubSpot, Salesforce, Pipedrive and others.
Omnichannel fallback
Reach customers over SMS and WhatsApp with fallback delivery routes.
FAQ
SMS and messaging — frequently asked questions
Can I send SMS from a US number?
Yes. Plus1CX provides US and Canadian numbers with two-way SMS, and dedicated inbound numbers for campaigns. We help with the sender registration required by US carriers for business messaging.
How are opt-outs handled?
The platform recognizes STOP replies automatically, adds the number to the blacklist instantly and checks the blacklist before every send.
Can messages be sent from our own software?
Yes. The REST API sends single, recurring and bulk messages and returns delivery reports; incoming messages arrive through webhooks.
Does it work with 3CX?
Yes. SMS can be received directly in 3CX and sent from the same interface your team uses for calls.
Is WhatsApp supported?
Yes, through the WhatsApp Business API, with the same contact base and reports as SMS.
Related solutions
Start messaging from one platform
Tell us which messages you send today and from which systems.
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Tell us what you would like to automate — we will show how it would work in your case. Only the email address is required.