My campaign shows "running" but 0 emails sent — is something broken?

Almost always, no. WarmySender sends your campaign gradually rather than all at once, so right after you launch you may briefly see "running" with 0 sent while the first emails go out and the rest are paced through the day. Seeing this for a short time right after launch is normal. Check the "Next email ~time" shown on the campaign to see when the next message goes out — if there is an upcoming time there, your campaign is healthy and simply pacing.

Why does my campaign send gradually instead of all at once?

Sending an entire list in one burst is one of the fastest ways to land in spam and damage your domain reputation, because mailbox providers notice senders who fire off many identical emails at the same moment. To keep you in the inbox, WarmySender deliberately spreads your sends across your sending window (for example 7am to 5pm) and across your selected send days. This creates a natural, human-looking sending rhythm. It is intentional, not a delay or a bug.

How soon after I launch do the first emails go out?

The first few emails begin going out within a couple of minutes of launching (or resuming) the campaign, as long as the current time is inside your sending window and it is one of your send days. The remaining emails are then paced across the rest of the day. So the typical experience is: launch, see "running" with 0 sent for a brief moment, then watch the first sends land within a few minutes and the count climb through the day.

What controls how fast my campaign sends?

Four things you control: how many mailboxes are connected to the campaign (more mailboxes means more capacity, so the list moves faster), your per-email interval (the gap left between sends — a larger gap is gentler and slower), your daily limit (the most emails the campaign sends in a day, after which it pauses until tomorrow), and your sending window and send days (the hours and days sending is allowed). Outside your window or on a non-send day, sending pauses and then resumes automatically when you are back inside it.

What is the "Next email" time and how do I use it?

The "Next email ~time" shown on the campaign tells you when the next message is scheduled to go out. It is the clearest confirmation that your campaign is working: if you see an upcoming time there, your campaign is healthy and pacing, with nothing to fix. If that time is later in the day, it simply means your sending is spread out, exactly as designed.

It has been a while and still nothing has sent — what should I check?

Check three things. First, confirm the campaign has contacts — open the Prospects tab and make sure people are enrolled (exclusion rules can remove more people than expected). Second, confirm at least one mailbox is connected and active — a campaign needs a connected sending mailbox, and if your only one is disconnected, reconnect it and the campaign picks back up automatically. Third, confirm the current time is inside your sending window and on a send day — if "right now" is outside your chosen hours or on a day you did not select, sending waits until the next valid time (the "Next email ~time" shows when). If all three check out and it still looks stuck, reply to support at hello@warmysender.com with your campaign name and we will take a look.

Why is my campaign "running" but no emails sent yet?

WarmySender Team

Updated Jun 22, 2026

You just launched a cold email campaign, the status says running, but the Sent count still shows 0. Almost always, this is completely normal — and nothing is broken. WarmySender sends your campaign gradually rather than all at once, so right after launch you may see a short stretch of "running" with little or nothing sent yet while the first emails go out and the rest are paced through the day.

This is part of the WarmySender 4-pillar platform — Cold Emailing, Email Warmup, LinkedIn Outreach, and Multichannel sequences. Gradual, paced sending applies to your cold email campaigns.

Why campaigns send gradually (and not all at once)

Sending a whole list in one burst is one of the fastest ways to land in spam and hurt your domain's reputation. Real people don't fire off hundreds of identical emails in the same minute, and mailbox providers notice when a sender does. To keep you in the inbox, WarmySender deliberately spreads your sends out:

Across your sending window — for example 7am to 5pm. Emails are paced through those hours instead of going out in a single spike.
Across your send days — for example weekdays only. On a day you didn't select, the campaign simply waits.

The result is a natural, human-looking sending rhythm that protects your deliverability and your domain reputation over the long run. It is intentional — it is not a delay or a bug.

The first emails start promptly after launch

You don't have to wait long to see things move. Right after you launch (or resume) a campaign, the first few emails begin going out within a couple of minutes — as long as the current time is inside your sending window and it's one of your send days. The remaining emails are then paced out across the rest of the day.

So the typical experience is: launch the campaign, see "running" with 0 sent for a brief moment, then watch the first sends land within a few minutes, and the count keep climbing through the day.

Look at the "Next email" time

The clearest way to confirm your campaign is working is the "Next email ~time" shown on the campaign. It tells you when the next message is scheduled to go out. If you see an upcoming time there, your campaign is healthy and simply pacing — there's nothing to fix. If that time is later in the day, it just means your sending is spread out, exactly as designed.

What affects how fast your campaign sends

How quickly emails go out depends on a few settings you control:

How many mailboxes are connected to the campaign — more mailboxes means more sending capacity, so the list moves faster.
Your per-email interval — the gap WarmySender leaves between one send and the next. A larger gap is gentler and slower.
Your daily limit — the most emails the campaign will send in a day. Once you hit it, sending pauses until the next day.
Your sending window and send days — the hours and days sending is allowed. Outside your window, or on a day you didn't select, sending pauses and then resumes automatically when you're back inside it.

If you want to send a little faster, you can connect another mailbox, widen your sending window, add send days, or raise your daily limit — but it's worth keeping a steady, moderate pace, because that's what keeps you in the inbox.

If it still shows nothing after a while

If your sending window has been open for a while and you still see no sends, run through this quick checklist:

The campaign has contacts. Open the campaign's Prospects tab and confirm people are actually enrolled. If exclusion rules removed more people than you expected, you'll see a smaller count there.
At least one mailbox is connected and active. A campaign needs a connected sending mailbox. If your only mailbox is disconnected, reconnect it and the campaign picks back up automatically.
The current time is inside your sending window and on a send day. If "right now" falls outside your chosen hours or on a day you didn't select, sending waits until the next valid time — check the "Next email ~time" to see when that is.

If you've checked all three and it still looks stuck, just reply to our support with your campaign name and we'll take a look.