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What is the difference between a shared and dedicated number?

When sending messages through Cellcast, one of the first decisions you’ll make is choosing which type of number to send from.

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The two options are:

Shared Number (included for free with all accounts)
Dedicated Number (available as a paid upgrade)

Both support two-way messaging, but there are key differences that can impact message delivery, brand experience, and conversation continuity.

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What Is a Shared Number?

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A shared number is a mobile number used by multiple Cellcast customers for sending and receiving SMS messages. It is the default option and comes at no additional cost.

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🔹 Key Features:

✅ Free to use
✅ Supports replies
🔁 Rotates every few months
❗ Conversation threads may reset when the number changes

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Use Case:

Best for businesses sending occasional messages or for one-time campaigns where long-term threads are not critical.

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What Is a Dedicated Number?

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A dedicated number is a private mobile number assigned exclusively to your business. It ensures that all your messages come from the same sender, every time.

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Key Features:

🔐 Exclusive to your business
✅ Supports full two-way SMS
🧵 Maintains a continuous thread with your customer
💼 Ideal for long-term client communications
💰 $160/year (billed annually) or $18/monthly

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Use Case:

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Perfect for brands that require ongoing customer support, want to build trust and consistency, or need to keep a full history of past conversations.

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🧾 Summary: Shared vs Dedicated Number

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Feature	Shared Number	Dedicated Number
Cost	✅ Free	💰 $160/year or $18/monthly
Supports Replies	✅ Yes	✅ Yes
Consistent Number	❌ No (rotates)	✅ Yes
Message History Threading	❌ May break	✅ Always preserved
Branding & Recognition	❌ Limited	✅ Strong
Best For	One-time or basic use	High-frequency senders

Which One Should I Use?

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Choose a Shared Number if you:

Are just getting started
Only need messaging occasionally
Don’t require message history

Choose a Dedicated Number if you:

Run regular campaigns or provide SMS-based support
Want to maintain consistency and a thread of communication
Need to build trust and familiarity with your customers

💬 Need Help Choosing?

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Our team can help you assess your business needs and choose the best sender number strategy.

📩 Email: support@cellcast.com
💬 Live Chat: Available via your dashboard

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