Messaging Channels

YeboLink supports multiple messaging channels: SMS, WhatsApp, Email, and Voice.

Channel Overview

Channel	Cost	Max Length	Use Case	Delivery Speed
SMS	1 credit	1600 chars	Quick notifications, OTPs	Instant
WhatsApp	0.5 credits	Varies	Rich media, customer support	Instant
Email	0.1 credits	Unlimited	Marketing, receipts, documents	1-5 minutes
Voice	2 credits/min	N/A	Important alerts, verification	Instant

SMS

Perfect for time-sensitive notifications and global reach.

Features:

• 160 characters per segment (GSM-7)
• 70 characters per segment (Unicode)
• Global delivery to 200+ countries
• 98% open rate within 3 minutes

Example:

await sendMessage({
  to: '+1234567890',
  channel: 'sms',
  content: {
    text: 'Your verification code is 123456'
  }
});

Learn more about sending SMS →

WhatsApp (Coming Soon)

Rich messaging with media support and business features.

Features:

• Send text, images, videos, documents
• Interactive buttons and lists
• Message templates for notifications
• Two-way conversations
• Read receipts

Example:

await sendMessage({
  to: '+1234567890',
  channel: 'whatsapp',
  content: {
    text: 'Your order has shipped!',
    media_url: 'https://example.com/tracking-image.jpg'
  }
});

Coming Soon

WhatsApp integration is currently in development. Contact support@yebolink.app to join the beta program.

Email (Coming Soon)

Transactional and marketing emails with HTML support.

Features:

• HTML and plain text
• Attachments
• CC and BCC support
• Email templates
• Link tracking
• Open and click analytics

Example:

await sendMessage({
  to: 'user@example.com',
  channel: 'email',
  content: {
    subject: 'Welcome to YeboLink!',
    html: '<h1>Welcome!</h1><p>Thanks for signing up.</p>',
    text: 'Welcome! Thanks for signing up.'
  }
});

Coming Soon

Email channel is currently in development. Contact support@yebolink.app for early access.

Voice (Coming Soon)

Automated voice calls for critical alerts.

Features:

• Text-to-speech in multiple languages
• Custom audio files
• Interactive voice response (IVR)
• Call recording
• Voicemail detection

Example:

await sendMessage({
  to: '+1234567890',
  channel: 'voice',
  content: {
    text: 'This is an important security alert. Your account has been accessed from a new location.',
    voice: 'female',
    language: 'en-US'
  }
});

Coming Soon

Voice channel is currently in development. Contact support@yebolink.app for early access.

Channel Selection Guide

When to Use SMS

• Time-sensitive notifications
• OTP and verification codes
• Appointment reminders
• Order status updates
• Payment confirmations
• Emergency alerts

When to Use WhatsApp

• Customer support conversations
• Rich media content (images, videos)
• Order updates with tracking
• Personalized marketing
• Interactive menu options
• Two-way communication

When to Use Email

• Marketing campaigns
• Newsletters
• Receipts and invoices
• Welcome sequences
• Detailed documentation
• Reports and statements

When to Use Voice

• Critical security alerts
• High-priority notifications
• Accessibility requirements
• Verification for high-risk actions
• Emergency notifications
• Elderly or visually impaired users

Multi-Channel Strategy

Send the same message across multiple channels for better reach:

const sendMultiChannel = async (recipient, message) => {
  const channels = ['sms', 'email'];

  for (const channel of channels) {
    try {
      await sendMessage({
        to: recipient[channel === 'sms' ? 'phone' : 'email'],
        channel,
        content: {
          text: message
        }
      });
    } catch (error) {
      console.error(`Failed to send via ${channel}:`, error);
    }
  }
};

Channel-Specific Best Practices

SMS Best Practices

• Keep messages under 160 characters
• Include sender identification
• Provide opt-out instructions for marketing
• Use URL shorteners for links
• Test with different carriers

WhatsApp Best Practices

• Use approved message templates
• Respond within 24-hour window
• Personalize messages
• Use media to enhance engagement
• Respect user preferences

Email Best Practices

• Use clear subject lines
• Optimize for mobile devices
• Include unsubscribe link
• Test across email clients
• Segment your audience

Voice Best Practices

• Keep messages concise and clear
• Speak slowly and clearly
• Include important info at the beginning
• Offer option to repeat message
• Test audio quality

Rate Limits by Channel

Channel	Rate Limit
SMS	100 requests/minute
WhatsApp	100 requests/minute
Email	200 requests/minute
Voice	50 requests/minute

Next Steps

• Send SMS Messages
• Send Bulk Messages
• Setup Webhooks