Paubox Outage History

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Paubox had 18 outages in the last 2 years totaling 288h 7m of downtime — averaging 0.7 incidents per month.

There were 18 Paubox outages since November 28, 2025 totaling 288h 7m of downtime. Each is summarised below — incident details, duration, and resolution information.

Source: https://status.paubox.com

Minor September 21, 2026

Dashboard data display issues affecting some Outbound and Marketing customers

Detected by Pingoru
Sep 21, 2026, 09:17 PM UTC
Resolved
Sep 22, 2026, 12:23 AM UTC
Duration
3h 6m
Affected: Paubox Dashboard
Timeline · 2 updates
  1. monitoring Sep 21, 2026, 09:17 PM UTC

    Some Outbound and Marketing customers may see incomplete or missing information in the Mail Log and Paubox Marketing areas of the dashboard, and Marketing pages may be slow to load or time out. Email delivery is not affected. Messages are being sent, received, filtered and encrypted normally throughout. No customer data has been lost — this affects only how recent activity is displayed. We have identified the cause of the Mail Log issue and have a fix in place. We are still investigating the Marketing issue. We will update this page as we have more.

  2. resolved Sep 22, 2026, 12:23 AM UTC

    Display issues with Outbound Email and Marketing have been resolved.

Read the full incident report →

Minor August 14, 2026

Users cannot log in to the Paubox Admin App/Paubox Dashboard

Detected by Pingoru
Aug 14, 2026, 07:36 PM UTC
Resolved
Aug 14, 2026, 08:06 PM UTC
Duration
29m
Affected: Paubox Dashboard
Timeline · 3 updates
  1. identified Aug 14, 2026, 07:36 PM UTC

    We have identified an issue blocking log in to our admin app and should have a fix in place shortly.

  2. monitoring Aug 14, 2026, 07:48 PM UTC

    A fix has been implemented and we are monitoring the results - log in is confirmed functional again.

  3. resolved Aug 14, 2026, 08:06 PM UTC

    The incident has been resolved.

Read the full incident report →

Notice July 22, 2026

Some Inbound customers report blank Inbound quarantines

Detected by Pingoru
Jul 22, 2026, 08:08 PM UTC
Resolved
Jul 22, 2026, 09:06 PM UTC
Duration
58m
Affected: Inbound Security
Timeline · 2 updates
  1. investigating Jul 22, 2026, 08:08 PM UTC

    We are investigating reports from some Inbound Security customers that their Inbound quarantines are blank despite mail being marked as quarantined in their mail logs.

  2. resolved Jul 22, 2026, 09:06 PM UTC

    No defect was identified, no changes were shipped. Two reasons customers may have encountered this: 1) Paubox is shipping improvements almost daily - if something is suddenly unavailable, you may need to log out/back in to refresh your access 2) In order for the Inbound quarantine to display results, "all categories" or at least one category must be selected. If no categories are selected, the page will show no results.

Read the full incident report →

Minor July 8, 2026

Reports of intermittent inbound mail delays

Detected by Pingoru
Jul 08, 2026, 07:07 PM UTC
Resolved
Jul 08, 2026, 07:22 PM UTC
Duration
14m
Affected: Inbound Security
Timeline · 2 updates
  1. investigating Jul 08, 2026, 07:07 PM UTC

    We are currently investigating this issue.

  2. resolved Jul 08, 2026, 07:22 PM UTC

    This incident has been resolved.

Read the full incident report →

Minor June 25, 2026

Quarantine release non functional for inbound security customers

Detected by Pingoru
Jun 25, 2026, 03:23 PM UTC
Resolved
Jun 25, 2026, 06:04 PM UTC
Duration
2h 41m
Affected: Inbound Security
Timeline · 3 updates
  1. identified Jun 25, 2026, 03:23 PM UTC

    Customers are reporting inbound security quarantine release is non functional - a fix is in progress.

  2. monitoring Jun 25, 2026, 05:11 PM UTC

    A fix is in place and we are monitoring results.

  3. resolved Jun 25, 2026, 06:04 PM UTC

    This incident has been resolved.

Read the full incident report →

Minor June 17, 2026

Microsoft certificate rotation causing higher than average secure message conversion for some outbound customers

Detected by Pingoru
Jun 17, 2026, 04:33 PM UTC
Resolved
Jun 17, 2026, 06:20 PM UTC
Duration
1h 46m
Affected: Outbound Security
Timeline · 3 updates
  1. identified Jun 17, 2026, 04:33 PM UTC

    Beginning at 6AM UTC today, Microsoft began presenting an updated certificate on some of their hosted mail accounts, and our outbound servers' list of trusted authorities doesn't yet include the new one. As a result, a portion of outbound emails to recipients hosted on Microsoft 365 are currently being routed through the Paubox Secure Message Center instead of delivered directly to the recipient's inbox. Affected recipients receive a notification with a secure link to view the message in our portal. No emails have been lost and no data security has been compromised — the Secure Message Center fallback is operating as designed to protect message content when direct delivery cannot be verified. We are updating the certificate and should have a resolution shortly.

  2. monitoring Jun 17, 2026, 05:00 PM UTC

    We are rolling out a new cert server by server and monitoring.

  3. resolved Jun 17, 2026, 06:20 PM UTC

    Direct delivery to Microsoft 365 recipients has been restored. Messages sent during the incident were delivered securely via the Paubox Secure Message Center; no mail was lost. Thank you for your patience.

Read the full incident report →

Notice May 12, 2026

Some hosted/webmail customers report certificate errors blocking mobile log in

Detected by Pingoru
May 12, 2026, 07:52 PM UTC
Resolved
May 13, 2026, 11:02 PM UTC
Duration
1d 3h
Affected: Hosted Mail
Timeline · 2 updates
  1. monitoring May 12, 2026, 07:52 PM UTC

    Some customers using our hosted/webmail reported certificate issues blocking access on mobile devices. We have refreshed our certificates again - if you are still seeing an error, please clear your cookies and cache. If this does not resolve your issue, take a screenshot and email [email protected] so we can isolate your specific issue.

  2. resolved May 13, 2026, 11:02 PM UTC

    This incident has been resolved.

Read the full incident report →

Minor April 8, 2026

Some Google Workspace customers report inbound & outbound delays on internal emails

Detected by Pingoru
Apr 08, 2026, 03:32 PM UTC
Resolved
Apr 08, 2026, 11:34 PM UTC
Duration
8h 1m
Affected: Inbound Security
Timeline · 5 updates
  1. monitoring Apr 08, 2026, 03:32 PM UTC

    We have had a few calls from some Google Workspace customers report inbound & outbound delays on internal emails which Down Dectector corroborates - see https://downdetector.com/status/gmail/ - we will continue to monitor this.

  2. monitoring Apr 08, 2026, 05:56 PM UTC

    Google has updated this site with more details: https://support.cloud.google.com/portal/system-status?product=WORKSPACE&cssp=true We will continue to monitor.

  3. monitoring Apr 08, 2026, 08:52 PM UTC

    Google has published this https://www.google.com/appsstatus/dashboard/incidents/224ozRqzW4sFBDK8hLnT We continue to monitor.

  4. monitoring Apr 08, 2026, 09:54 PM UTC

    Google has been releasing backed up mail - we expect resolution by 3pm PDT (their resolution estimate).

  5. resolved Apr 08, 2026, 11:34 PM UTC

    Google has marked this issue resolved.

Read the full incident report →

Minor April 7, 2026

Outbound delays for Hosted mail & SMTP server solution customers

Detected by Pingoru
Apr 07, 2026, 10:49 PM UTC
Resolved
Apr 08, 2026, 12:20 AM UTC
Duration
1h 30m
Affected: Hosted Mail
Timeline · 4 updates
  1. investigating Apr 07, 2026, 10:49 PM UTC

    We are currently investigating outbound delays for Hosted mail & SMTP server solution customers. We have not observed issues for any other outbound customers at present.

  2. identified Apr 07, 2026, 11:06 PM UTC

    The issue has been identified and a fix is being implemented.

  3. monitoring Apr 07, 2026, 11:54 PM UTC

    A fix has been implemented and we are monitoring the results.

  4. resolved Apr 08, 2026, 12:20 AM UTC

    Queues have recovered and delays as resolved.

Read the full incident report →

Minor March 29, 2026

Inbound mail delays reported

Detected by Pingoru
Mar 29, 2026, 09:05 PM UTC
Resolved
Mar 29, 2026, 10:32 PM UTC
Duration
1h 27m
Affected: Inbound Security
Timeline · 5 updates
  1. investigating Mar 29, 2026, 09:05 PM UTC

    We are currently investigating inbound mail delays.

  2. identified Mar 29, 2026, 09:18 PM UTC

    We have identified a database issue and are implementing a fix.

  3. monitoring Mar 29, 2026, 09:35 PM UTC

    A fix is in place and we are monitoring results.

  4. monitoring Mar 29, 2026, 10:09 PM UTC

    We are continuing to monitor - the deferred mail queue has dropped ~60% from the highest spike and new mail is flowing. We anticipate full resolution within the hour.

  5. resolved Mar 29, 2026, 10:32 PM UTC

    Inbound queues are healthy again. We'll complete an internal post mortem tomorrow and have an RCA available upon request.

Read the full incident report →

Minor March 18, 2026

Hosted/webmail customers reporting incorrect statuses

Detected by Pingoru
Mar 18, 2026, 07:43 PM UTC
Resolved
Mar 18, 2026, 10:48 PM UTC
Duration
3h 5m
Affected: Hosted Mail
Timeline · 4 updates
  1. investigating Mar 18, 2026, 07:43 PM UTC

    Customers using our hosted/webmail platform and smtp server solution have reported all their mail in logs is marked as queued. We are investigating.

  2. identified Mar 18, 2026, 07:49 PM UTC

    We have identified the cause and are implementing a fix.

  3. monitoring Mar 18, 2026, 08:23 PM UTC

    A fix has been implemented and we are monitoring results.

  4. resolved Mar 18, 2026, 10:48 PM UTC

    We observed status updates universally, but we discovered 2 customers still experiencing too many "queued" emails. Because the larger issue is resolved, we'll close this incident - but we are working on a fix and will communicate directly with the affected parties.

Read the full incident report →

Minor March 18, 2026

Outbound email customers reporting delays

Detected by Pingoru
Mar 18, 2026, 03:08 PM UTC
Resolved
Mar 18, 2026, 04:29 PM UTC
Duration
1h 20m
Affected: Outbound Security
Timeline · 4 updates
  1. investigating Mar 18, 2026, 03:08 PM UTC

    Outbound email customers are reporting delays in excess of 10 minutes. We are investigating.

  2. identified Mar 18, 2026, 03:19 PM UTC

    The issue has been identified and a fix is in progress.

  3. monitoring Mar 18, 2026, 03:47 PM UTC

    A fix has been implemented and we are monitoring results - current email testing is coming in under 5 minutes.

  4. resolved Mar 18, 2026, 04:29 PM UTC

    This incident has been resolved. Queues have returned to normal and delayed mail is being delivered.

Read the full incident report →

Minor March 3, 2026

Users unable to authenticate MFA codes

Detected by Pingoru
Mar 03, 2026, 10:40 PM UTC
Resolved
Mar 04, 2026, 12:05 AM UTC
Duration
1h 24m
Affected: Paubox Dashboard
Timeline · 4 updates
  1. investigating Mar 03, 2026, 10:40 PM UTC

    We are investigating why users are unable to verify MFA codes and begin fresh sessions in our admin app. If you are already logged in, you can navigate as usual.

  2. identified Mar 03, 2026, 11:17 PM UTC

    The issue has been isolated and a fix is in progress.

  3. monitoring Mar 03, 2026, 11:40 PM UTC

    A fix has been implemented & we are monitoring results.

  4. resolved Mar 04, 2026, 12:05 AM UTC

    The issue has been resolved.

Read the full incident report →

Notice February 25, 2026

Intermittent delivery delay affecting customers emailing hotmail.com & outlook.com

Detected by Pingoru
Feb 25, 2026, 10:25 PM UTC
Resolved
Feb 26, 2026, 07:38 PM UTC
Duration
21h 13m
Affected: Outbound Security
Timeline · 2 updates
  1. monitoring Feb 25, 2026, 10:25 PM UTC

    We are observing intermittent delivery delays affecting a limited subset of outbound messages to certain external domains (including hotmail.com and outlook.com). Our systems remain fully operational. We are actively monitoring and adjusting sending patterns as needed.

  2. resolved Feb 26, 2026, 07:38 PM UTC

    We are no longer observing intermittent delays - all mail that was deferred yesterday has been delivered.

Read the full incident report →

Notice February 23, 2026

Inbound customers report delay in quarantine logging

Detected by Pingoru
Feb 23, 2026, 05:45 PM UTC
Resolved
Feb 24, 2026, 02:17 AM UTC
Duration
8h 31m
Affected: Inbound Security
Timeline · 3 updates
  1. identified Feb 23, 2026, 05:45 PM UTC

    Inbound email customers have reported a delay in their quarantine log propagation. Emails are marked quarantine in their mail log, but do not appear in quarantine until hours later. There is no mail flow or data loss issue, but we have identified a problem with timestamps and are working to correct it.

  2. monitoring Feb 23, 2026, 09:56 PM UTC

    We have shipped a correction and are monitoring the results.

  3. resolved Feb 24, 2026, 02:17 AM UTC

    This incident has been resolved.

Read the full incident report →

Notice January 22, 2026

Microsoft outage

Detected by Pingoru
Jan 22, 2026, 08:20 PM UTC
Resolved
Jan 23, 2026, 02:19 PM UTC
Duration
17h 58m
Timeline · 2 updates
  1. identified Jan 22, 2026, 08:20 PM UTC

    Microsoft365 outage reported on the Microsoft Service Health Status page

  2. resolved Jan 23, 2026, 02:19 PM UTC

    This incident has been resolved. Microsoft Service Health Status - https://status.cloud.microsoft/m365/referrer=serviceStatusRedirect

Read the full incident report →

Minor December 3, 2025

Some customers report outbound mail delays

Detected by Pingoru
Dec 03, 2025, 05:07 PM UTC
Resolved
Dec 04, 2025, 04:08 AM UTC
Duration
11h
Affected: Outbound Security
Timeline · 7 updates
  1. investigating Dec 03, 2025, 05:07 PM UTC

    Some customers report outbound mail delays in excess of 10 min - we are investigating

  2. identified Dec 03, 2025, 05:17 PM UTC

    We have identified the issue and are working on a fix.

  3. identified Dec 03, 2025, 07:30 PM UTC

    We're continuing to work on the fix for this issue.

  4. monitoring Dec 03, 2025, 08:45 PM UTC

    A fix is in place a new mail is flowing normally - we expect another 3-4 hours for the deferred queue to unspool. We'll continue to monitor and update you if anything changes.

  5. investigating Dec 03, 2025, 10:13 PM UTC

    Customers are reporting missing outbound mail log data - we are investigating.

  6. monitoring Dec 03, 2025, 11:27 PM UTC

    Mail log data has been restored. We are continuing to monitor the deferred queue while it processes the backlog.

  7. resolved Dec 04, 2025, 04:08 AM UTC

    The deferral queue has cleared and outbound is functioning normally.

Read the full incident report →

Minor November 28, 2025

Some customers reporting deferrals from Yahoo & affiliates

Detected by Pingoru
Nov 28, 2025, 06:11 PM UTC
Resolved
Dec 06, 2025, 02:17 AM UTC
Duration
7d 8h
Affected: Outbound Security
Timeline · 3 updates
  1. monitoring Nov 28, 2025, 06:11 PM UTC

    Some customers are reporting outbound deferrals from Yahoo & affiliates - we are keeping an eye on this.

  2. monitoring Dec 04, 2025, 04:08 AM UTC

    We are continuing to monitor reports of Yahoo deferrals independent of today's incident.

  3. resolved Dec 06, 2025, 02:17 AM UTC

    Email to yahoo.com and affiliates (aol.com, verizon.net, att.net, sbcglobal.net, cox.net, etc) is delivering as normal.

Read the full incident report →