How campaign sending windows, time zones & pacing work

The short version

Two things about your cold email campaign are working exactly as intended, even though they sometimes surprise people:

• A Running campaign that shows only a few sent (or zero) early on is normal. WarmySender deliberately spreads your emails out gradually across your sending window instead of firing them all at once. Slow, steady sending is what keeps you landing in the inbox — so this is a good sign, not a problem to fix.
• Every time you see for the campaign is in the campaign's chosen time zone. The "next email" time, your window, everything — all shown in that one time zone. And your emails only ever send inside your window. They never go out before it opens or after it closes.

WarmySender is a 4-pillar outreach platform — Cold Emailing, Email Warmup, LinkedIn Outreach, and Multichannel sequences. This page is about the Cold Emailing pillar: when your campaign emails actually go out, and why.

What a sending window is

A sending window is the daily stretch of hours when your campaign is allowed to send. You set a start time and an end time — for example, 9:00 AM to 5:00 PM. Outside those hours, your campaign rests and waits for the next day's window to open.

Your window is interpreted in the time zone you choose for the campaign. So "9:00 AM to 5:00 PM" doesn't mean 9-to-5 wherever your computer happens to be — it means 9-to-5 in the campaign's time zone. If you set the campaign's time zone to New York time, a 9:00 AM start is 9:00 AM in New York, no matter where you are when you check.

You can also choose which days of the week your campaign sends — for instance, weekdays only, or including weekends. On a day that's switched off, nothing sends, and the campaign simply picks up again on your next active day.

A short, focused window (like business hours) is a healthy default: it concentrates your sending into the times real people are reading email, and it keeps your daily volume gentle and natural-looking — which protects your sender reputation.

All your campaign times are in your time zone

Once you pick a time zone for a campaign, every time WarmySender shows you for that campaign is in that same time zone. That includes the time of the next scheduled email. This keeps everything consistent: your window, your schedule, and your "next send" time all speak the same clock.

This is the usual reason the "next email" time looks like a different hour than you expected. If you set the campaign to New York time but you're sitting in London, the next-send time you see is shown in New York time — the campaign's time zone — not your local London time. Nothing is wrong; the time is simply labeled in the campaign's zone so it always matches the window you set.

Your emails only ever send inside your window. WarmySender will never send a campaign email before your window opens or after it closes. If a send would naturally fall outside the window — say, late at night — it's automatically held and goes out at the start of your next open window instead. Your window is a firm boundary, not a suggestion.

Why a running campaign shows only a few sent at first

When you launch a campaign, WarmySender does not send every email the instant you press start. Instead, it spaces your emails out gradually across the day's sending window. So if your window is 9:00 AM to 5:00 PM and you have a few hundred prospects, those emails are released steadily through the day rather than all in the first minute.

That's why, if you check shortly after launching — or early in the window — you may see your campaign marked Running with only a handful sent so far, or even none yet. This is expected and it's a good thing. It means:

• Your deliverability is protected. Sending a big burst of emails all at once is one of the clearest signals of spammy behavior, and it's a fast way to land in the spam folder. A natural, paced flow looks like a real person sending real email.
• Your inbox placement stays strong. Gentle, even sending throughout the day is exactly the pattern that keeps you in the primary inbox rather than getting filtered.
• There's nothing to fix. You don't need to restart the campaign, re-launch it, or change a setting. The remaining emails will continue to go out across the rest of the window, at a healthy pace, on their own.

In other words: "Running" means your campaign is live and working. The count climbing slowly is the system pacing your sends to keep you out of spam — not a sign that something stalled.

A worked example

Say you set up a cold email campaign with 300 prospects, a sending window of 9:00 AM to 5:00 PM, and the campaign's time zone set to New York time. You finish building it and launch it at 9:00 AM.

• 9:05 AM (New York time) — you check the campaign. It says Running, and only a few emails show as sent. That's completely normal: your 300 emails are being released gradually across the 9-to-5 window, not all at once. Nothing is broken.
• The "next email" time shows an hour in New York time — because every time for this campaign is shown in the campaign's time zone. If you happen to be in London while you check, that next-send time will read as a New York hour, which is several hours behind your local clock. Still correct; it's just labeled in the campaign's zone.
• Through the day — the sent count keeps climbing steadily as more emails go out, each within the 9-to-5 New York window. By late afternoon, the bulk of your 300 have been sent, all inside business hours.
• 5:00 PM (New York time) — the window closes. Any prospects not yet reached today simply wait. They'll be picked up tomorrow when the 9:00 AM window opens again. No email ever went out before 9:00 AM or after 5:00 PM New York time.

So "Running but only a few sent at 9:05" and "the next-send time shows a New York hour" are both the system doing its job: pacing your sends for deliverability, and keeping every time and every send inside the window you chose.

Changing your sending window or time zone

You can change a campaign's sending window, its days, or its time zone in the campaign's schedule settings. Open the campaign, go to its schedule settings, adjust the start and end times, the active days, or the time zone, and save.

If you change the time zone, your upcoming sends automatically realign to the new window. You don't need to rebuild anything or re-enroll your prospects — WarmySender simply re-reads "9:00 AM to 5:00 PM" against the new time zone and continues sending inside the updated window from then on. The same is true if you widen, narrow, or shift the window itself: future sends follow the new schedule, always staying inside it.

A tip: it usually works best to send during your prospects' working hours rather than your own. If your prospects are mostly on the US East Coast, setting the campaign to New York time and a 9-to-5 window lands your emails in their inbox during their workday — which tends to lift open and reply rates.

Why we pace instead of blasting

Pacing your sends and honoring your window aren't limitations — they're deliberate protections. Email providers watch how you send, not just what you send. A sudden flood of identical-looking emails is the classic fingerprint of spam, and it's the quickest route to the junk folder and a damaged sender reputation. Steady, human-paced sending inside sensible hours is what keeps you trusted and in the inbox.

This works hand in hand with email warmup, which builds and maintains your sender reputation in the background. Together, gentle pacing during campaigns and ongoing warmup are what get your cold emails reliably delivered. We'll always favor protecting your deliverability over sending faster — because a campaign that lands in spam helps no one.

Multichannel: when email follows a LinkedIn step

In a multichannel sequence, you can mix LinkedIn steps and email steps in one campaign — for example, send a connection request, wait for it to be accepted, and then send an email. Two things are worth knowing about how these flow, and both are the system protecting your accounts.

Email can flow gradually when it follows LinkedIn steps. LinkedIn is much stricter than email about how much activity it will allow from an account each day, so WarmySender paces the LinkedIn steps in your sequence to stay well within safe daily LinkedIn limits. Because your email step comes after those LinkedIn steps for each contact, the email naturally starts flowing at that same gentle pace rather than all at once. So a multichannel campaign can look slower to send email than a plain email campaign would — that's the LinkedIn pacing rippling forward to the email, and it keeps your LinkedIn account healthy.

An optional LinkedIn step that can't run is simply skipped — it never stops your email. Some LinkedIn steps are best-effort touches meant to warm a contact up, such as liking one of their recent posts. If a contact has no recent post to like, there's nothing for that step to do — so WarmySender now just skips it and keeps the sequence moving to your next step, including the email. An optional touch that has nothing to act on will never end a contact's sequence or hold back the email you actually care about.

Example. Say your multichannel sequence is: (1) like the contact's latest post, then (2) send them an email. For a contact who hasn't posted recently, there's no post to like — so WarmySender skips step 1 for that one contact and goes straight to sending their email in step 2. Everyone else, who does have a recent post, gets the like and then the email. Either way, the email always goes out.

Common questions

Why does my campaign say Running but only a few are sent?

Because WarmySender spreads your emails out gradually across your sending window instead of sending them all at once. Early in the window — or just after you launch — you'll naturally see only a few sent so far, and that's exactly how it's meant to work. Paced sending protects your deliverability and keeps you in the inbox. The count will keep climbing across the rest of the window on its own. There's nothing to fix, restart, or re-launch.

The next-send time shows a different hour than I set. Is something wrong?

No. Every time shown for a campaign is in the campaign's chosen time zone, including the next email time. If you set the campaign to one time zone (say New York) but you're checking from another (say London), the next-send time appears in the campaign's zone — New York time — which can look hours off from your local clock. It's correct; it's just labeled in the campaign's time zone so it always matches the window you set.

Will my emails ever send outside my sending window?

No. Your campaign emails only ever go out inside the window you set, in the campaign's time zone. If a send would otherwise fall outside the window — for example late at night — it's automatically held and goes out when your next window opens. The window is a firm boundary, not a guideline.

Can I change my sending window or time zone?

Yes. Open the campaign, go to its schedule settings, and adjust the start and end times, the active days, or the time zone, then save. If you change the time zone, your upcoming sends automatically realign to the new window — you don't need to rebuild the campaign or re-enroll anyone. Future sends simply follow the updated schedule and stay inside it.

My campaign hasn't sent anything yet, even though it's Running. Did it stall?

Almost certainly not. Right after launch, or at the very start of your window, it's normal to see zero or just a few sent while the system begins releasing emails at a healthy, gradual pace. Give it a little time within your window and you'll see the sent count begin to rise. (If your window is set to hours that haven't started yet today, sending will begin once the window opens.)

Can I just send everything at once to go faster?

We don't recommend it, and WarmySender paces on purpose to protect you. Sending a large burst all at once is one of the strongest spam signals to email providers and can push your messages into the junk folder and harm your sender reputation. Steady, paced sending across your window is slower by design — but it's what actually gets your emails delivered and read.

Does this apply to follow-up steps too?

Yes. Every email step in your campaign — the first message and all follow-ups — is sent inside your sending window, in the campaign's time zone, and paced the same gentle way. Follow-ups also respect the wait times you set between steps, and when a follow-up is due it still goes out only within your window.

My multichannel campaign has LinkedIn steps and email steps — why does the email seem slow?

Because when your email step comes after a LinkedIn step, the email flows at the LinkedIn pace. LinkedIn allows much less daily activity than email, so WarmySender paces your LinkedIn steps to stay safely within LinkedIn's daily limits — and since the email follows those steps for each contact, it starts flowing at that same gentle pace rather than all at once. This is the LinkedIn pacing carrying forward to the email, and it protects your LinkedIn account. Nothing is stalled; the emails continue to go out steadily.

What happens if an optional LinkedIn step (like liking a post) can't run? Does it stop my email?

No. Some LinkedIn steps are optional, best-effort touches — for example, liking a contact's recent post. If a contact has no recent post to like, there's simply nothing for that step to do, so WarmySender skips it and keeps the sequence moving to your next step, including the email. An optional touch that has nothing to act on will never end a contact's sequence or hold back your email — the email still goes out.

Related guides

• Setting up your first campaign — Build a multi-step campaign step by step
• Send follow-ups in the same email thread — Thread step 2 onward under step 1
• See which recipients opened your emails — Track engagement once your campaign is live
• Your campaign draft is saved automatically — Your setup is kept as you build
• Full documentation — All guides
• Support — How to get in touch