Email Sending Capacity Calculator

Why Calculate Sending Capacity?

Understanding your email sending capacity is crucial for successful cold email campaigns. Sending too many emails too quickly can:

• Trigger spam filters and damage your sender reputation
• Get your email accounts suspended or blacklisted
• Reduce email deliverability and inbox placement rates

Email Provider Sending Limits

The Impact of Sender Delays

Sender delays are critical for maintaining good deliverability. They control how long to wait between emails from the same sender account:

• 30-minute delays: Maintains natural sending patterns with minimal impact on volume
• 1-hour delays: More conservative approach, better for new accounts or high-value campaigns
• 2-hour delays: Maximum safety for sender reputation, ideal for warming up accounts