My weekly cold email operations checklist. 30 minutes that save hours of problems

ops_checklist · 2026-04-01 · 2,280 views

Every Monday morning I run through this checklist before touching any campaigns. Takes 30 minutes. Catches problems before they become expensive. After 8 months of running this routine, I have not had a single domain blacklisted or inbox suspended mid-campaign. Here is the exact checklist.

1. Check bounce rates per inbox (5 minutes). Open your sending platform and look at bounce rates for each individual inbox, not just campaign averages. Any inbox above 3% bounce rate gets investigated immediately. High bounces mean either bad list data hitting that specific inbox or the inbox itself is having deliverability issues. I pull any inbox above 3% from active campaigns until I figure out the cause.

2. Review blacklist status (5 minutes). Run every active sending domain through MXToolbox blacklist checker. I have 12 domains active right now, so this takes about 5 minutes. Any domain on a blacklist gets paused immediately. I submit delisting requests the same day. If a domain hits Barracuda or Spamhaus, it gets replaced entirely. Those two are the hardest to recover from.

3. Verify warmup is running (3 minutes). Check that warmup is still active on every inbox. Sometimes warmup gets paused accidentally, or the sending platform has a hiccup. An inbox that stops warmup for a few days while still running cold campaigns will see deliverability drop within a week. Quick check. Is warmup active? Are warmup emails being received and engaged with? Good. Move on.

4. Check reply rate trends (5 minutes). Compare this week's reply rate to the previous 3 weeks. A small dip (0.5% or less) is normal variance. A drop of 1% or more across multiple campaigns usually means something changed. Could be seasonal, could be a list quality issue, could be deliverability degradation. I investigate any significant drops before sending more volume into a broken campaign.

5. Rotate underperforming inboxes (5 minutes). Any inbox that has been consistently below the campaign average for 2+ weeks gets pulled. I replace it with a fresh pre-warmed inbox from PuzzleInbox. Inboxes degrade over time. That is normal. The key is rotating them before they drag down your overall campaign performance. I budget for replacing about 20% of my inboxes every 3 months.

6. Verify email lists for next week (7 minutes). Whatever lists I plan to load for next week's campaigns, I run through ZeroBounce now. Not later. Not the morning I load them. Now. This gives me time to clean, deduplicate, and review the lists without rushing. I also check lists against my master suppression file to avoid contacting anyone who has previously opted out or bounced.

Why this routine matters: Most cold email problems are slow-building. A domain does not get blacklisted overnight. It accumulates spam complaints for a week or two first. An inbox does not suddenly die. Its deliverability degrades gradually. This weekly check catches those slow problems early, before they cost you meetings and revenue. Thirty minutes on Monday saves hours of firefighting later in the week.