Skip to main content

🔧 Email Tools

Interactive tools and calculators for email marketing optimization.

ROI Calculators​

Email Campaign ROI Calculator​

ROI = ((Revenue - Cost) / Cost) × 100

Example:
Revenue: $50,000
Cost: $1,000
ROI: 4,900%

Lifetime Value Calculator​

CLV = Average Order Value × Purchase Frequency × Customer Lifespan

Example:
AOV: $100
Frequency: 4x/year
Lifespan: 3 years
CLV: $1,200

Planning Tools​

Send Time Optimizer​

Time ZoneBest Send TimeWorst Send Time
EST10 AM, 2 PM3 AM, 8 PM
CST11 AM, 3 PM4 AM, 9 PM
MST9 AM, 1 PM2 AM, 7 PM
PST11 AM, 3 PM4 AM, 9 PM

Subject Line Analyzer​

Good Subject Line Characteristics:

  • Length: 30-50 characters
  • Emoji: 1 max
  • Personalization: Yes
  • Urgency: Moderate
  • Questions: Effective

Spam Trigger Words to Avoid:

  • FREE, GUARANTEE, WINNER
  • Multiple exclamation marks!!!
  • ALL CAPS
  • $ symbols at start
  • "Click here"

Testing Tools​

A/B Test Sample Size Calculator​

Baseline RateMinimum Detectable LiftSample Size per Variant
2%25% (to 2.5%)15,000
5%20% (to 6%)6,500
10%15% (to 11.5%)4,800
20%10% (to 22%)6,200

Statistical Significance Calculator​

Confidence Level: 95%
P-value threshold: 0.05
Minimum test duration: 1 full business cycle

List Management Tools​

List Growth Calculator​

MonthStartingNew SubsUnsubsGrowth Rate
Jan10,000500504.5%
Feb10,450525524.7%
Mar10,923550554.5%

Engagement Scoring Matrix​

ActionPointsDecay Rate
Open+1-0.1/month
Click+3-0.2/month
Reply+5-0.3/month
Purchase+10-0.5/month
Share+7-0.4/month

Deliverability Tools​

Spam Score Checker​

Factors Checked:

  • SPF Record: ✓
  • DKIM Signature: ✓
  • DMARC Policy: ✓
  • Blacklist Status: ✓
  • Content Analysis: ✓
  • Link Reputation: ✓

IP Warming Schedule​

DayVolume% of List
1500.1%
21000.2%
35001%
41,0002%
55,00010%
610,00020%
725,00050%
8+Full volume100%

Quick Reference Tools​

  • UTM Builder - Coming Soon
  • Preheader Generator - Coming Soon
  • Emoji Picker - Coming Soon
  • HTML Minifier - Coming Soon
  • Image Optimizer - Coming Soon