The best message wins. Every night, automatically.
Create up to 3 variations of your subject line or opening message. Every night, Dobble analyzes open and reply rates and promotes the winner to remaining prospects.
“Quick question about your pipeline”
“Saw you raised a Series A last month”
“How GrowthCo closes 3x faster”
3
Max variations per step
Nightly
Analysis cycle
Auto
Winner promotion
Full history
Per variation
Why it works
The features that move the needle
Automated testing
No manual split setup. Create variations when building your sequence and Dobble handles distribution and tracking automatically.
Nightly winner selection
Every night, Dobble analyzes open rate, reply rate, and positive reply rate. The best-performing variation is promoted to all remaining prospects.
Performance compounds over time
Each campaign builds a data history. Insights from past winners inform future campaign recommendations.
Process
How it works
Create 2-3 variations
Write different subject lines or opening messages for the same step. Variations can differ in tone, angle, or personalization level.
Launch to your prospect list
Dobble distributes variations evenly across prospects at launch. Each prospect gets exactly one variation.
Nightly analysis runs automatically
Open rates, reply rates, and positive reply rates are calculated every night across all active variations.
Winner is promoted automatically
The best-performing variation is promoted to remaining prospects. You are notified of the decision with the supporting data.
FAQ
Common questions
What is the minimum sample size before a winner is declared?
Dobble requires statistical significance before promoting a winner. Minimum 50 sends per variation with at least 20% data collected. Small campaigns may take a few days before a winner is selected.
Can I override the auto-selected winner?
Yes. You can manually promote any variation at any time from the campaign dashboard, regardless of the automated analysis.
Does A/B testing work on LinkedIn steps too?
Yes. You can create variations for LinkedIn connection request notes and follow-up messages, not just email.
From the blog
We did the learning so you don't have to
Compare
You have options. Here's the honest truth.
| Feature | Dobble | Apollo / Clay | LemList | Hire an SDR |
|---|---|---|---|---|
| Unified CRM + inbox | ✓ | ✕ | ✕ | ✓ |
| Inbound classification & deal matching | ✓ | ✕ | ✕ | ✓ |
| Lead generation | ✓ | ✓ | ✕ | ✓ |
| Email sequences | ✓ | Partial | ✓ | ✓ |
| LinkedIn automation | ✓ | Partial | Partial | ✓ |
| AI-generated sequences | ✓ | ✕ | ✕ | ✕ |
| Nightly A/B optimization | ✓ | ✕ | ✕ | ✕ |
| Reply detection + auto-stop | ✓ | ✕ | ✓ | ✓ |
| Memory & deal context | ✓ | ✕ | ✕ | ✓ |
| Morning brief | ✓ | ✕ | ✕ | ✕ |
| Mobile + Web | ✓ | ✓ | ✓ | ✕ |
| Monthly cost | €49+ | €99+ | €99+ | €4,000+ |
Pricing
Pricing that scales with you
7-day free trial. No credit card required to start.
Pro
Inbound + outbound in one place.
- ✓3 active campaigns
- ✓150 prospects per campaign
- ✓Inbound + outbound
- ✓Daily morning brief
- ✓Gmail, Outlook & LinkedIn
- ✓CRM & pipeline
- ✓Mobile + Web
Ultra
For growing teams. Most popular.
- ✓5 active campaigns
- ✓500 prospects per campaign
- ✓Everything in Pro
- ✓More inboxes
- ✓Mobile + Web
Max
For teams running inbound + outbound at scale.
- ✓10 active campaigns
- ✓1 000 prospects across campaigns
- ✓Everything in Ultra
- ✓Automations & workflows
- ✓Auto deal creation
- ✓Priority support
All plans include a 7-day free trial. No credit card required to start.
Cancel anytime. Your data exports with you.
The entire sales journey.
One platform.
Find leads, run campaigns, manage deals, and close without juggling 5 tools or hiring a full team. Start free. First morning brief tomorrow.