Mailbox stuck warming up

Warmup shows no progress or the mailbox keeps pausing.

Updated Sep 10, 2026 1 min read

Problem

A mailbox stays Warming with no ramp, or is repeatedly auto-paused.

Possible causes

  • A safety threshold keeps pausing it — bounces, complaints or authentication
  • The mailbox requires setup or attention
  • The warmup schedule excludes most of the week
  • The mailbox is genuinely early in a Conservative ramp and is fine

How to check

  1. Warmup → read the mailbox's status badge; it names the protection that paused it.
  2. Email Accounts → open the mailbox and read its current status.
  3. Open warmup settings and check the schedule days and hours.
  4. Look at the mailbox's health band and recent bounce rate.

How to fix

  • Complete the mailbox action shown before resuming warmup.
  • Clean the lead lists causing bounces or complaints before resuming.
  • Widen the warmup schedule.
  • If it is early in a Conservative ramp, leave it alone; slow is the point.

When to contact support

Mailbox Active, no protection pause recorded, health good, and volume has not moved in over a week.

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