How to Identify the Campaign Causing Spam Issues

When you’re running multiple email campaigns at once, which is a pretty normal thing to do for any business, it can feel impossible to know which one is facing spam issues and dragging your deliverability down.

If you don’t pinpoint it on time, emails that should be hitting the inbox end up in spam, engagement plummets, and your sender reputation takes a hit, thereby landing all your campaigns land in spam.

So, how do you identify the problematic campaign – let’s discuss.

Why it’s hard to identify the culprit campaign

When every campaign uses the same sending domain, the line between “healthy” and “problematic” campaigns gets blurred. Here’s why:

• Shared sender reputation: If one campaign gets flagged by spam filters, your sender reputation gets affected and inbox providers like Gmail and Yahoo may start filtering all of your campaigns.

• Aggregate metrics hide the truth: Many ESPs only show you topline performance across all campaigns, making it hard to spot the outlier.

• Lagging indicators: You don’t get a clear picture of the issue until it’s too late. By the time you realize emails are going to spam, the campaign may already have damaged your domain health.

• No clear benchmarks: There is no context or benchmark for a normal email campaigns’ performance metrics. So, it’s hard to know whether a campaign’s performance is “normal” or a red flag.

This is why most marketers struggle to identify the root cause — they can see deliverability issues, but not which campaign triggered them.

How to pinpoint the campaign causing spam issues in Mailmodo

Unlike traditional tools, Mailmodo gives you campaign-level visibility across deliverability and engagement. This makes it easy to compare multiple campaigns side by side and isolate the one responsible for spam issues.

Here’s how you can do it:

1. Compare all campaigns side by side

Mailmodo shows you all your campaigns in a single list along with important metrics that allow you to compare campaigns and pinpoint the ones that have an exceptionally low number of delivered emails.

It also shows your opens, clicks, unsubscriptions and submissions for these campaigns. Here, you can spot the campaign with significantly lower engagement than the rest very easily.

A campaign having near-zero opens and clicks while others are performing normally can be the one you’re hunting for.

2. Use segmentation filters to validate campaign performance

Mailmodo’s segmentation feature lets you filter users by their interaction with specific campaigns. The principle here is that if disengagement is much higher for one campaign, that’s a clear signal it’s landing in spam.

So, you can create a segment that says something like “Contacts who opened campaign X but didn’t open campaign Y," where campaign Y is our suspected campaign with spam issues.

If you get a segment where the majority of the people who opened campaign X didn’t open campaign Y, then it’s likely that campaign Y landed in the spam folder for them.

Conclusion

By combining analytics dashboards and segmentation, you can clearly see which campaign is responsible for your spam issues. Instead of guessing, you’ll know:

• Which campaign triggered deliverability problems

• Whether it’s a campaign-wide issue or batch-specific

• How that campaign compares to your other campaigns

This level of visibility allows you to pause, fix, or adjust the problematic campaign before it damages your entire sender reputation.

So, try out Mailmodo today and ensure for the long run that you’re able to identify the needle in the haystack and fix the issues before they catch up with your other campaigns.