When to Follow Up on Sales Emails (Using Tracking Data)
Email Tracker Team
Jan 10, 2026
5 min read

The Science of Timing
Timing is everything in sales. A follow-up sent 5 minutes after an open is 10x more effective than one sent at random.
1. The 'Hot Open'
When you see a notification that your proposal was opened, wait 2-3 minutes. This ensures they've actually read it before you jump in.
2. Multi-Open Analysis
If someone opens your email 5 times in 2 hours, they are highly interested. This is your signal to call or send a direct message.
3. The 3-Day Rule
If there's no open after 3 days, it's time for a slight 'bump' email with a different subject line.
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