---
title: "What Is Email Sender Reputation"
description: "Build trust with email providers to help your emails land in the inbox, not the spam folder."
url: https://help.user.com/en/articles/145-what-is-email-sender-reputation
collection: "Manage Sender Reputation"
updated: 2026-10-23
language: en
alternates: [fr, pl, de, it, es]
---

# What Is Email Sender Reputation

Build trust with email providers to help your emails land in the inbox, not the spam folder.

Your **sender reputation** is essentially a digital trust score. It is the evaluation that email service providers (like Gmail or Outlook) use to determine if you are a legitimate sender or a spammer. This score is vital because it determines whether your emails are delivered to the recipient's inbox, filtered into the spam folder, or blocked entirely.

Maintaining a healthy reputation ensures that the hard work you put into your campaigns actually reaches your audience.

## Definition

**Sender Reputation** is the level of trust your sending identity has earned with email providers over time. In Positive User, this reputation is tied to both your **IP address** (the technical server used to send mail) and your **domain name** (your website address).

It differs from simple “deliverability” because while deliverability is the result of a single send, reputation is the long-term record of your sending behavior. Think of it as a credit score for your email marketing: the better your past behavior, the more likely you are to be trusted in the future.

## Why It Is Important

-   **Improved Deliverability**: Helps your emails bypass filters and land directly in the primary inbox.
    
-   **Higher Engagement**: By reaching the inbox, you increase the chances of your contacts opening and clicking your content.
    
-   **Cost Efficiency**: Prevents you from wasting resources sending emails that will never be seen.
    
-   **Domain Protection**: Keeps your business domain off global blacklists, ensuring all your company's communication remains professional and reliable.
    

## How It Works

Email providers use sophisticated algorithms to analyze several signals from your account:

-   **Technical Authentication**: They check if your workspace is properly configured with **SPF**, **DKIM**, and **DMARC** records.
    
-   **List Hygiene**: Providers look at your bounce rates. Sending to old, invalid, or purchased addresses signals that you are not following best practices.
    
-   **Behavioral Signals**: Positive actions (opens, clicks, and replies) improve your score, while negative actions (spam complaints and high deletion rates) damage it.
    
-   **Sending Volume**: Sudden spikes in the number of emails you send can look suspicious. Consistent, steady volume is preferred.
    

## Use Cases

Building and monitoring your reputation helps you solve common delivery problems.

-   **Automations:** Create an automation that automatically removes a contact from your list if they haven't interacted with your campaigns in 90 days. It helps to prevent your reputation from dropping and avoid sending emails to inactive or non-existent addresses.
    
-   **Campaigns**: Send your first few campaigns to your most engaged **Contacts** only to establish trust. This "warms up" your domain and proves to email providers that people value your content.
    
-   **Filters**: To want to avoid spam traps and high complaint rates use filters to identify and segment only those who have "double opt-in" status, ensuring every recipient has explicitly consented to hear from you.
    

> **Info:** Never use purchased or rented lists. These lists are often filled with "Spam" traps - email addresses designed specifically to catch spammers. Sending to even one of these can cause your IP or domain to be blacklisted immediately.

## Related Articles

-   [What is Email Deliverability](https://help.user.com/en/articles/138-what-is-email-deliverability.md)
    
-   [How to Warm up a Sending Domain](https://help.user.com/en/articles/141-how-to-warm-up-a-sending-domain.md)