Campaign Not Sending: Checklist

Purpose

You've set up a campaign, it's marked as active, but nothing is going out — or sends started and then stopped. This article walks through every possible reason a campaign stops sending and how to fix each one.

Quick Check: The Three Required Things

Before anything else, confirm your campaign has all three requirements:

1. Active sequence — at least one step with content.
2. Contacts in campaign — contacts added and in "Active" or "Queued" status.
3. Sender profile assigned — a profile with at least one connected mailbox, in Campaign Settings → Senders tab.

If any of these is missing, fix it first. Everything else on this list assumes you have all three.

Checklist

1. Is the campaign status set to Active?

Go to Campaign Settings → Campaign tab. Check the Campaign On/Off toggle. If it's off, the campaign is paused — no sends will go out.

Turn it on to resume.

2. Is today outside the campaign's sending schedule?

Go to Campaign Settings → Schedule tab.

• Check which days are checked. If today is Saturday and only Mon–Fri are checked, no sends today.
• Check the sending hours window. If it's 9:00–17:00 and you're looking at 7:00am or 7:00pm local time, the campaign is waiting for the next window.

Note that the schedule uses the campaign timezone, which may differ from your local timezone. A campaign set to US Eastern time won't send during US business hours if you're viewing it from a European timezone.

3. Are the contacts actually eligible to send?

Go to the campaign's Contacts tab. Look at the contact statuses.

If all your contacts are in Paused, Completed, or Replied status, the campaign has nothing eligible to send.

Also check: are contacts waiting at a step that has a delay before it? A contact sitting at "wait 3 days" is eligible but just not due yet. Check the campaign events feed to see the last event for a contact.

4. Is the assigned sender profile healthy?

Go to Campaign Settings → Senders tab. Look at the sender profile cards.

Each card shows LinkedIn count, Twitter count, and email sender count. If the email sender count shows 0 or the profile was recently modified, there may be no active mailboxes.

Go to Senders → Mailboxes and check the connection status of each mailbox in the profile. Look for any mailboxes showing as disconnected or with an authentication error.

Common causes:

• Password changed on the underlying Gmail or Outlook account
• OAuth token revoked (someone went into Google/Microsoft settings and removed SuperSend's access)
• Provider suspended the mailbox

To fix: Click the mailbox and re-authenticate or reconnect.

5. Has the sender's daily limit been hit?

Each mailbox has a daily send limit. If a mailbox has already sent its limit for today, it won't send again until tomorrow (in UTC, typically).

Check the Campaign Daily Limit in Campaign Settings → Sending Rules tab. If you've set an explicit cap and campaigns have already hit it today, sending stops until tomorrow.

This is often the cause of "sends started then stopped."

6. Is the "Skip Contacts In Other Campaigns" setting blocking sends?

Campaign Settings → Sending Rules tab → Skip Contacts In Other Campaigns.

If this is set to Yes, any contact that's also active in another campaign on your team is skipped. If most of your contacts are in other campaigns, sends will be very sparse.

7. Is the "Only Send Follow Ups" setting enabled?

Campaign Settings → Sending Rules → Only Send Follow Ups.

If this is on, new contacts entering the sequence from step 1 will not receive their initial email. Only contacts already mid-sequence (on a follow-up step) will get emails. This is a rarely-used setting that gets enabled by accident sometimes.

Turn it off unless you specifically want this behavior.

8. Is "Skip Incomplete Emails" blocking sends?

Campaign Settings → Sending Rules → Skip Incomplete Emails.

If this is on, any contact missing a value for a required variable in the sequence (e.g., {{first_name}} is blank for a contact) is skipped entirely.

Go to your contact list and look for contacts with blank fields that match your template variables. Fill in the missing data or update the email template to include fallback values.

9. Check the Events feed for errors

Open the campaign → Events tab. This is a chronological log of every send event.

Filter or scroll to see the most recent events. Look for:

• Error-level events on specific contacts
• "Step failed" events
• Authentication errors from a sender

If a specific step has repeated failures, the campaign settings may have it configured to pause the campaign on failure (Settings → Campaign tab → Sequence Step Failures dropdown). If the campaign is paused due to a step failure, there will be a notification banner on the campaign dashboard.

10. Is the campaign paused due to a LinkedIn failure?

Campaign Settings → Sending Rules → Pause On LinkedIn Failure.

If this is on and a LinkedIn step failed (expired session, rate limit, connection refused), the entire campaign may have paused. Check the Events tab for LinkedIn errors and re-authenticate the LinkedIn account in the sender profile.

Expected Result

You've identified the specific reason the campaign wasn't sending and resolved it. Sends resume within the next scheduled sending window.

Related Articles

• Senders Overview
• Disabled Sender Troubleshooting
• Configure Campaign Schedule and Sending Hours
• Create and Use Sender Profiles

Updated on: 17/03/2026