Email marketing
How to Measure a Mailing Campaign: KPIs and Reporting Guide
Learn how to measure a mailing campaign using delivery, bounce, opens, clicks, replies, conversions, unsubscribes, and actionable reporting.
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Cold Email Campaign Duration Calculator
Estimate sending days and calendar duration for a full sequence.
Days between steps
Approximate calendar duration
62days · about 9 weeks
First emails 2,000 Follow-ups 3,705 · 65%
Sending days
39
Sequence delay days
7
First emails
2,000
Follow-ups
3,705
How it's calculated
- Sending days
- ceil(total sends ÷ daily capacity)
- Calendar days
- ceil((sending days ÷ sending days per week) × 7) + sequence delay days
- Total sends
- contacts + Σ remaining contacts after stop/reply rate, per follow-up step
No sending limit is universally safe. Provider rules, mailbox age, domain authentication, engagement, complaint rate, and account reputation change practical capacity.
Planning 2,000 contacts across 5 mailboxes? Use MailQV to rotate senders, schedule follow-ups, and monitor replies.
Start freeWhy campaigns take longer than you expect
Calendar time is driven by two things: how many sending days the total volume needs, and the waiting time between sequence steps. Five-day sending stretches every week of sending to seven calendar days.
Add mailboxes to shorten sending days; shorten delays only if the follow-ups still read naturally.
Resources
Related guides
Quick reads to help you plan audiences, sending volume, sequences and measurement before launch.
Sending volume
How Many Cold Emails Can You Send Per Day?
Calculate a practical cold email daily volume from mailbox capacity, list quality and provider constraints—not a universal magic number.
Sending volume
How Many Mailboxes Do You Need for Cold Email?
Estimate mailbox requirements with daily capacity, sequence demand, send windows and a buffer for interruptions.
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