Inboxlogy Free Tools
Best Time to Send Email
See the highest-response send windows for your prospects' timezone — with their current local time and the days to target (and avoid).
How it works
Pick the prospect's location
Choose the city, country, or timezone your prospect sits in. The tool shows their current local time next to yours, so you can see whether the window is open right now.
Read the send windows
You get suggested local-time windows and the weekdays worth targeting or avoiding. Treat these as common starting points drawn from how office workers handle mail, not as proven optimums for your list.
Schedule and then test
Set your sequence to send in recipient local time, then split your list and run two windows against each other for a few weeks. Keep the one your own reply data supports.
Send time is a hypothesis, not a lever
Published best-time charts come from aggregate data across industries, list types, and offers that look nothing like yours. They age badly too, because inbox habits change and every sender reads the same chart and crowds the same hour. The honest version: send time shifts results at the margin, and only once the fundamentals are right. Deliverability, list fit, and your first line decide whether anyone replies.
Timing still has one hard mechanic behind it. An email near the top of the inbox when someone is triaging mail gets read, and one buried under forty newer messages often does not. That argues for sending during the recipient's working hours in their own timezone, and for avoiding Monday morning backlog and Friday afternoon. Everything beyond that is a test. Split your list, hold the copy constant, and measure replies rather than opens.
Common mistakes
Sending in your own timezone
A sequence scheduled at 9 a.m. your time lands at 1 a.m. for half of a global list. Configure recipient-local sending, or segment campaigns by region and schedule each one separately.
Dumping the day's volume on the hour
Hundreds of messages leaving one mailbox at exactly 9:00 looks like a machine. Spread sends across the window with randomized gaps so daily volume per inbox stays flat and human-looking.
Optimizing opens instead of replies
Open tracking needs a pixel, and blocked images plus privacy proxies make open rates unreliable. Tuning send time against a broken metric can push you toward the window that triggers the most prefetching, not the most conversations.
Calling a test on thin data
Two hundred sends per variant cannot separate a timing effect from noise. Run a window test until each arm has a few thousand sends and a double-digit reply count, or you are just reading randomness.
Frequently asked questions
What is the best time to send a cold email?
There is no single best time, and any site claiming one is generalizing from other people's lists. A reasonable starting hypothesis for B2B is mid-morning or early afternoon in the recipient's local time, midweek. Use that as a default, then split-test two windows against your own reply rate.
Should I send cold email on weekends?
Usually not for B2B. Weekend mail sits unread until Monday, then competes with the whole weekend backlog, so it starts near the bottom of the inbox. Exceptions exist: founders, agency owners, and shift-based roles often clear mail on Sunday evening. If your list skews that way, test Sunday against a weekday before ruling it out.
Does send time affect deliverability or just response rate?
Mostly response rate. Filters care about authentication, domain reputation, complaint rates, and engagement, not the clock. Send time touches deliverability only indirectly: if a window produces more replies and fewer complaints, that engagement feeds your reputation. Sending a day's entire volume in one burst is the timing choice that can hurt you, because the spike itself looks automated.
How do I send email in my prospect's local timezone?
Store a timezone, or at least a country and city, on every contact record, then enable recipient-local scheduling in your sending platform. Most sequencers support it. If yours does not, build one campaign per region and set its send window manually. Guessing timezone from a company's headquarters fails for remote teams, so verify the contact's own location when you can.
How long should I test a send window before deciding?
Long enough for each variant to collect a few thousand sends and a double-digit number of replies, which for most outbound teams means three to four weeks. Keep subject line, copy, list source, and mailbox set identical across arms. Change one thing at a time, otherwise you cannot tell whether timing or copy moved the number.