How Do I Migrate from SMS to RCS?

SMS to RCS Migration: The Safe Path

Migrating from SMS to RCS doesn't have to be risky. Here's the gradual approach.

Why Gradual Migration Works

Risks of sudden switch:

• Unsupported devices (20-30% of audience) miss messages
• Template rejections disrupt campaigns
• Hard to measure impact without baseline

Benefits of gradual migration:

• Maintain message delivery to all customers
• Learn RCS capabilities with low-stakes campaigns
• Build internal confidence with proven results

The 4-Phase Migration Plan

Phase 1: Foundation (Weeks 1-4)

Goal: Set up RCS infrastructure alongside existing SMS.

Actions:

• Choose RCS provider
• Complete carrier approval
• Set up RCS platform and integrations
• Keep all existing SMS campaigns running unchanged
• Test RCS with internal team only

Phase 2: New Campaigns (Weeks 5-8)

Goal: Launch new campaigns on RCS-first with SMS fallback.

Actions:

• Identify 1-2 new campaign opportunities
• Design RCS-first versions with SMS fallback
• Launch to small audience (10-20% of customer base)
• Monitor delivery, engagement, and feedback

Phase 3: Gradual Shift (Weeks 9-16)

Goal: Migrate existing high-volume SMS campaigns to RCS+SMS.

Actions:

• Prioritize high-impact campaigns (cart recovery, promotional)
• Migrate one campaign at a time (1-2 per week)
• Maintain SMS-only as fallback option

Phase 4: Optimization (Weeks 17-24)

Goal: Complete migration for most campaigns.

Actions:

• Migrate remaining campaigns
• Optimize RCS content based on data
• Document lessons learned

Migration Strategy by Campaign Type

Transactional messages: Migrate early — high volume, high engagement Cart abandonment: Migrate mid-phase — high ROI use case Promotional campaigns: Migrate gradually — high stakes Customer service flows: Migrate last — complex, interactive flows

Maintaining SMS During Migration

Keep SMS for:

• 100% of critical transactional messages
• Customers on unsupported devices (20-30%)
• Fallback for failed RCS delivery
• Users who opt out of RCS

Measuring Migration Success

Track:

• Delivery rate (stay above 95%)
• Open rate (RCS 50-80% vs SMS 20-40%)
• Click-through rate
• Conversion rate
• Revenue per message

When to Pause or Roll Back

Red flags requiring pause:

• Delivery rate drops below 90%
• Opt-out rate spikes above 10%
• Customer complaints increase significantly
• Technical issues with RCS platform

Rollback strategy: Keep SMS-only templates ready for quick reactivation.

The Bottom Line

Migrate from SMS to RCS gradually over 2-6 months. Keep SMS as fallback throughout. Measure performance continuously and roll back if needed.

The destination is RCS-first with SMS fallback — not RCS-only. This gives you rich features for 70-80% and universal delivery for 100%.

Most businesses see 2-3x engagement lift and 20-40% revenue increase per message after migration.