Hiver Status

The issue affecting the ability to change email statuses and assign emails in Hiver for Gmail has now been resolved. Our engineering team has implemented the fix, and services are operating normally again.

# **Incident postmortem: Email Sync Delay in Shared Inboxes** > Total downtime > > **6.5 hrs** > > Uptime in May 2026 > > **98.95%** > > Prior 12-month avg uptime of Hiver Services > > **≈ 99.98%** **What happened** On May 4, 2026, new incoming emails stopped appearing in Hiver shared inboxes for approximately 6.5 hours. The root cause was an unexpected and severe surge in message queue volume that overwhelmed a core infrastructure component — the Sync Engine — responsible for pulling emails from Gmail into Hiver in real time. Hiver's infrastructure is designed to handle up to 2× our peak traffic at all times. This is one reason we have maintained near-perfect uptime over the past two years. On this occasion, the surge exceeded even that ceiling, bringing the Sync Engine to a near-complete halt. **What we've done immediately** Our engineers have done a deep analysis of this incident. As a remediation step, we have added more elasticity to the message queues infrastructure so that it has more headroom for future surges. We are also committed to migrate additional queues incrementally and completely to the elastic queue infrastructure over the coming weeks. **What we're doing next** Beyond the immediate fixes, we are evaluating several longer-term improvements including faster detection-to-recovery workflows and more granular controls during abnormal volume conditions. We will keep sharing further details on this page as we make progress.

On April 28th at 3:05 PM UTC, Hiver faced an issue with Chat services, which lasted for about 43 minutes. Our engineers quickly identified the cause and the issue was fully resolved by 3:48 PM UTC.

This incident has been resolved.

We're back! All our Hiver services are up and running now. We thank you for your patience.

On November 18th at 6:30 AM UTC, Hiver faced an issue with Automation services, which lasted for about 1 hour 30 minutes. Our engineers quickly identified the cause and the issue was fully resolved by 8:00 AM UTC.

We’ve deployed a fix, and all Hiver services are now fully operational. Thank you for your patience while we worked to resolve this issue.

This incident has been resolved.

On April 1, 2025, at approximately 08:15 AM UTC, Hiver encountered delays in email synchronization, lasting about 45 minutes. Our engineers identified the root cause and fully resolved the issue by 09:00 AM UTC.

All Hiver services are now fully operational. We thank you for your patience and understanding.

The scheduled maintenance has been completed.

The scheduled maintenance has been completed.

The scheduled maintenance has been completed.

The scheduled maintenance has been completed.

The scheduled maintenance has been completed.

The scheduled maintenance has been completed.

The scheduled maintenance has been completed.

The scheduled maintenance has been completed.

The scheduled maintenance has been completed.

The scheduled maintenance has been completed.