Everyone asks "when should I send cold emails?" The data is surprisingly consistent across studies. Here's what actually works.
Best Days to Send
The winners: Tuesday, Wednesday, Thursday
These three days consistently show the highest reply rates across B2B cold email. Why?
- Monday: inboxes are flooded from the weekend. Your email gets buried.
- Friday: people are mentally checked out. Low engagement.
- Tuesday-Thursday: focused work days. People process their inbox.
Weekend sends?
Sending on Saturday or Sunday shows 30-40% lower reply rates. Some practitioners argue that Sunday evening sends arrive at the top of Monday's inbox — but the data doesn't support this consistently. Skip weekends.
In ClickReach, enable "weekend skip" in your sequence settings to hold emails until Monday automatically.
Best Time of Day
The sweet spot: 8-10 AM in the recipient's timezone
People check email first thing in the morning. An email that arrives at 8:30 AM sits near the top of the inbox when they open it at 9:00 AM.
Second-best window: 1-3 PM
After lunch, people clear their inbox again. If you missed the morning window, early afternoon works well.
Worst times:
- Before 7 AM: gets buried by other morning emails
- After 5 PM: won't be seen until tomorrow
- During lunch (12-1 PM): competitive slot, lower reply rates
Timezone Strategy
If your prospects span multiple timezones, sending at 9 AM EST means your email arrives at 6 AM PST — buried before they wake up.
Solution: Use timezone-aware scheduling. ClickReach resolves each contact's timezone from their location data and sends at their local optimal time. A contact in New York gets the email at 9 AM EST; a contact in London gets it at 9 AM GMT.
Randomized Send Times
Sending 200 emails at exactly 9:00:00 AM looks automated. Spam filters notice.
Add a random offset (ClickReach calls this "randomized send times") to spread sends across a 30-60 minute window. Your 200 emails go out between 8:45 and 9:30 AM, mimicking natural human sending behavior.
What Matters More Than Timing
Honest truth: timing accounts for maybe a 10-15% difference in reply rates. The variables that matter 5x more:
- List quality: Right person at the right company
- Subject line: Determines whether they even see your message
- Opening line: Determines whether they read past the first sentence
- Relevance: Does your offer match their actual need?
Get those right first. Then optimize timing for the marginal gain.
