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Scaling Guide

6 Steps to Scale Your Outreach

Go from 50 emails a day to 20,000—without burning your domain, destroying deliverability, or sacrificing personalization.

⏱️ 10 min read 🚀 6 scaling steps 🔒 Safe growth

Table of Contents

01

Prove Your Offer at Small Scale

Before you scale, prove. Scaling a broken process just breaks it faster. Start small, get consistent results, then expand.

What to prove before scaling:

  • Target market fit: Are you reaching the right people?
  • Messaging resonance: Do they respond to your value prop?
  • Offer attractiveness: Will they book a meeting or buy?
  • Conversion rates: What's your lead-to-meeting-to-close ratio?
50
Emails/day to start
10%+
Target reply rate
2%+
Meeting book rate

Rule: Don't scale past 100 emails/day until you have consistent positive replies and at least one meeting booked per 50 emails sent.

02

Set Up Infrastructure for Scale

Scaling requires infrastructure. One email address won't cut it at 10,000 emails/day. Build the foundation before you need it.

Infrastructure checklist:

  • Dedicated sending domains: Never use your primary domain
  • Multiple mailboxes: Distribute volume across accounts
  • DNS authentication: SPF, DKIM, DMARC properly configured
  • Warmup service: Automated reputation building
  • Deliverability monitoring: Real-time spam folder detection
  • List cleaning tools: Remove bounces before they hurt you
Domain Setup Strategy
For 10,000 emails/day:
• 5 sending domains (tryyourco.com, getyourco.com, etc.)
• 10 mailboxes per domain (2,000 emails each)
• Rotate sending across all mailboxes
• If one domain gets flagged, others continue
Pro Tip

Suplex includes automatic domain rotation, built-in warmup schedules, and deliverability monitoring—so you scale safely without the infrastructure headaches.

03

Warm Up Your Domains Properly

New domains have no reputation. Sending 1,000 emails on day one is a guaranteed path to the spam folder. Warmup is non-negotiable.

The warmup schedule:

  • Week 1: 5-10 emails/day
  • Week 2: 15-25 emails/day
  • Week 3: 30-50 emails/day
  • Week 4: 50-100 emails/day
  • Week 5+: Increase 10-20% weekly

Warmup best practices:

  • Send to engaged recipients who will open and reply
  • Maintain 2-way conversations (don't just send)
  • Keep content varied (don't send identical emails)
  • Monitor reply rates and spam placement
  • Don't rush—reputation takes time to build

Warning: Skipping warmup can get your domain permanently blacklisted. Recovery takes months. Do it right the first time.

04

Build Systems for Personalization

Here's the challenge: Scale without becoming spam. The solution is personalization at scale—systems that make every email feel hand-written.

Personalization systems to build:

  • Data enrichment pipeline: 30+ data points per lead
  • Dynamic content insertion: Variables beyond {{first_name}}
  • AI opening lines: Research-based personalization
  • Segment-specific templates: By industry, role, pain point
  • Conditional logic: Different emails based on data
Dynamic Personalization Example
Base template + dynamic elements:

"{{first_name}}, {{ai_opening_line}}

{{company}} is {{company_size_description}}, so you're 
probably {{pain_point_by_industry}}.

{{case_study_by_company_type}}"

Result: Every email is unique, even at 10,000/day
05

Scale Gradually and Monitor

Scaling is not a switch you flip—it's a dial you turn. Increase volume gradually while watching your metrics like a hawk.

Scaling progression:

  • Phase 1: 50-100/day (testing and validation)
  • Phase 2: 100-500/day (early scaling)
  • Phase 3: 500-2,000/day (growth mode)
  • Phase 4: 2,000-5,000/day (serious scale)
  • Phase 5: 5,000-20,000/day (enterprise volume)

Metrics to monitor daily:

  • Delivery rate (target: 95%+)
  • Open rate (benchmark: 20-40%)
  • Reply rate (target: 5-15%)
  • Bounce rate (max: 2%)
  • Spam complaint rate (max: 0.1%)

Golden rule: If reply rate drops below 5%, pause and fix your messaging before continuing to scale. Volume amplifies problems.

06

Optimize and Systematize

At scale, small improvements create massive results. A 2% boost in reply rate at 10,000 emails/day equals 200 more conversations per month.

Continuous optimization:

  • A/B test everything: Subjects, openings, CTAs, timing
  • Iterate on messaging: What worked at 500 may not work at 5,000
  • Segment deeper: More segments = better personalization
  • Optimize send times: Per recipient, not just per campaign
  • Refine targeting: Double down on highest-converting segments
2%
Improvement = 200 more conversations
10%
Lift from timing optimization
15%
Lift from subject line testing
Pro Tip

Suplex scales from 50 to 20,000 emails with built-in optimization—automatic A/B testing, AI personalization, and smart send timing that improves as you scale.

Scale Safely With Suplex

Built-in domain warmup, deliverability monitoring, AI personalization, and infrastructure for 20,000 emails/day—all while keeping your data local.

Scale Your Outreach
✓ 50-20,000 emails/day ✓ Automatic warmup ✓ Built-in optimization