Should you pause all sending immediately?

Your complaint rates are climbing, or you just saw your Gmail reputation drop to "Bad" in Postmaster Tools. Your first instinct is to hit pause on everything. That instinct is usually right, but "everything" deserves a second look before you pull the cord.

The real question isn't "should I pause?" It's "what exactly is broken, and how bad is it?" Your answer to that shapes what you stop, what you slow down, and what you absolutely keep running.

When a full marketing pause is the right call

Some signals tell you loud and clearly that continued sending will only dig the hole deeper. Stop marketing sends immediately if you're seeing any of these:

• Your Gmail Postmaster Tools domain reputation has dropped to "Bad" (not "Low", not "Medium". "Bad" is a different category of problem)
• You've landed on a major blocklist like Spamhaus SBL or XBL
• Your complaint rate has crossed 0.3% in Gmail Postmaster Tools (Google's own threshold for action is 0.1%, so 0.3% means you're already in trouble)
• You're in the middle of an active abuse incident, meaning someone used your infrastructure to send without your knowledge

In these cases, every additional send is more evidence against you. Pausing buys you time to diagnose without making the reputation hole any deeper. (Think of it like stopping a slow leak before the whole tank drains.)

When a selective pause makes more sense

Not every crisis is total. If your signals are more moderate, a targeted pullback is often smarter than a full stop:

• The problem is isolated to one segment, like a recent import or a cold outreach list that never should have been in your main sending stream
• Only one mailbox provider is affected, while others show healthy delivery
• Your reputation is "Low" or declining but hasn't yet hit "Bad"

In these situations, pause the risky segments and throttle your overall volume rather than stopping entirely. Keep sending to your most engaged subscribers. Let the low-engagement, high-risk groups sit while you investigate.

What about transactional emails

Transactional emails, things like password resets, receipts, and account alerts, are a separate conversation. If they're running on their own IP and subdomain, they may be completely unaffected by what's happening on your marketing stream. Deciding whether to keep transactional running comes down to whether those streams are genuinely isolated or just theoretically separate.

Now if you haven't set up stream separation and everything goes through the same IP, then yes, even your transactional sends are exposed. That's a harder call and probably worth a conversation with someone who knows your setup.

The diagnosis before the decision

Before you pause anything, take five minutes to check these:

• Gmail Postmaster Tools for your domain reputation and spam rate trends
• Our free blocklist checker to see if your domain or IP is listed anywhere
• Your ESP's bounce and complaint dashboard for the last 7 days

What you find there tells you whether you're dealing with a burst pipe or a slow drip. One needs immediate action. The other needs a measured response. Both need you to actually look before you decide.

If you're in the middle of this right now and not sure what you're looking at, our SOS hotline is free. No pitch, just help.