Choose the Right Sales Dialer: Power vs Dynamic vs Predictive
JustCall's Sales Dialer has three modes. Each one dials differently, supports different team sizes, and fits different campaign types. This guide helps you pick the right one for your workflow.
Available on: Power Dialer requires Pro plan. Dynamic and Predictive Dialers require SalesPro plan.
Quick Comparison
| Power Dialer | Dynamic Dialer | Predictive Dialer | |
|---|---|---|---|
| How it dials | One number at a time, sequentially | One number at a time per agent, sequentially | Multiple numbers simultaneously per agent |
| Agents per campaign | Single agent only | Multiple agents share one campaign | Multiple agents share one campaign |
| Add contacts mid-campaign | No — contact list is fixed at launch | Yes — add contacts to a live campaign at any time | Depends on plan (Pro Plus: Predictive only; SalesPro: all types) |
| Campaign ends when | All contacts dialed | Manually paused or all contacts exhausted | All contacts dialed |
| Re-run after completion | Yes | No | Yes |
| Recommended max contacts | No documented limit | 20,000 per campaign | No documented limit |
| Plan required | Pro and above | SalesPro only | SalesPro only |
Power Dialer
The Power Dialer dials numbers one at a time for a single agent. Before each call, you see the contact's information and CRM preview, so you can prepare before the call connects.
Best for
- Individual reps working a focused list of high-value prospects
- Personalized outreach where preparation between calls matters
- Teams on Pro or Pro Plus plans that do not have SalesPro
What it includes
- Voicemail drop (leave pre-recorded messages without waiting)
- Auto-SMS after calls (send a text automatically after each call)
- Disposition logging (categorize call outcomes)
- Reattempt rules (automatically retry contacts based on disposition)
- Sales scripts displayed during calls
Limitation
One agent per campaign. If your team needs to share a campaign, use the Dynamic or Predictive Dialer.
Dynamic Dialer
The Dynamic Dialer works like a Power Dialer that multiple agents share, with one critical difference: you can add contacts to a live campaign without stopping it. Campaigns run continuously until you manually pause them.
Best for
- Teams with a steady stream of incoming leads (speed-to-lead workflows)
- Never-ending prospect lists that grow daily
- Multiple reps working the same campaign simultaneously
What it includes
Everything in Power Dialer, plus:
- Multiple agents share one campaign
- Add contacts at any time — the campaign never needs to stop
- Continuous operation until manually paused
Limitations
- Once a Dynamic Dialer campaign ends, it cannot be re-run. Start a new campaign instead.
- Keep campaigns under 20,000 contacts for optimal performance.
Predictive Dialer
The Predictive Dialer dials multiple numbers at the same time. An algorithm predicts when an agent will become available and connects them only to calls answered by a live person. This maximizes the number of conversations per hour.
Best for
- High-volume campaigns where connect rate matters more than personalization
- Teams with enough agents to handle the higher call volume
- Campaigns with large contact lists where speed is the priority
What it includes
Everything in Power Dialer, plus:
- Multiple simultaneous calls per agent (configurable via "Maximum Calls Per Agent" setting)
- Answering Machine Detection (AMD) to filter out voicemails
- Voicemail Drop After Beep (requires AMD enabled)
- Multiple agents share one campaign
Limitations
- AMD accuracy is approximately 75% with a 4–5 second detection delay. Some live calls may be misclassified as machines.
- Abandoned calls: If no agent is available when a contact answers, the system plays an automated message. This is a compliance consideration for regulated industries.
Which Dialer Should You Choose?
| Your situation | Recommended dialer |
|---|---|
| You are a solo rep working a list of 50–500 prospects | Power Dialer |
| Your team gets new leads throughout the day and needs to call them fast | Dynamic Dialer |
| You have a large list (1,000+) and want to maximize conversations per hour | Predictive Dialer |
| You need to re-run the same campaign after it finishes | Power Dialer or Predictive Dialer (Dynamic cannot re-run) |
| You are on a Pro plan (not SalesPro) | Power Dialer (only option available) |
Plan Requirements
| Plan | Power Dialer | Dynamic Dialer | Predictive Dialer | Add contacts mid-campaign |
|---|---|---|---|---|
| Team | No | No | No | No |
| Pro | Yes | No | No | No |
| Pro Plus | Yes | No | Yes (Predictive only) | Predictive only |
| SalesPro | Yes | Yes | Yes | All campaign types |
| Trial (14 days) | Yes (up to 3 campaigns) | Yes (up to 3 campaigns) | Yes (up to 3 campaigns) | No (contacts uploaded once) |
Related Articles
- Admin Setup Checklist — set up your account and team
- How JustCall Works — understand numbers, users, credits, and integrations