How often should I monitor my reputation?

Most senders check their reputation when something already feels wrong. By then, you're behind. The better habit is building a monitoring rhythm that fits where your sending program actually is right now.

Here's a practical schedule broken down by situation, plus what to actually check at each interval.

Weekly (stable, established programs)

If you've been sending consistently for a while, a weekly check is enough to catch slow drift before it turns into a real problem. Pull your Sender Score, check whether your domain or IP appears on any blocklists, and review your bounce rate and spam complaint rate from your ESP dashboard. Complaint rates above 0.1% deserve attention. Bounce rates above 2% need action.

Daily (warmup periods)

But when you're warming up a new IP or domain, check every day. Your reputation is building from zero, and problems during warmup compound fast. Watch authentication failures (SPF, DKIM, DMARC), complaint rates, and any blocklist hits. Even one day of high complaints during warmup can stall the whole process.

Within 24 hours (after a large campaign)

Big sends move reputation quickly. After any high-volume campaign, check your complaint rate and bounce rate before your next send. If something spiked, you want to know now, not after the damage has spread to your next campaign.

Daily until resolved (active deliverability issue)

Still if you're already seeing inbox placement drop, open rates tank, or bounces climb, check every day. You need to track whether what you're doing is working. Blocklist status, authentication pass rates, and engagement trends are the three signals to watch until things stabilize.

The specific metrics worth tracking at every interval are your Sender Score or domain reputation score, complaint rate (via your ESP or Google Postmaster Tools), hard bounce rate, blocklist presence, and authentication pass rates. None of these alone tells the whole story, but together they give you a clear picture of where things stand.

For tools, our Blocklist Checker is free and takes about ten seconds. Worth bookmarking for your weekly check. If you're seeing signals you can't explain, our SOS hotline is free and we actually pick up.