How does IP range behavior affect other IPs and domain reputation?
Summary
What email marketers say12Marketer opinions
Email marketer from Mailjet shares that with shared IPs, your sending reputation can be affected by the practices of other senders. If other senders send spam or get blacklisted, your deliverability can suffer.
Marketer from Email Geeks mentions that Microsoft could block the whole range based on behavior from other IPs in the same range.
Email marketer from SendPulse explains that your IP address and domain reputation are closely linked. If your domain is associated with an IP address that has a poor sending history, this can negatively impact your email deliverability.
Email marketer from Validity explains that bad sending practices, like sending to unengaged users, impacts domain and IP reputation, leading to deliverability issues. It's critical to maintain a clean sending list.
Email marketer from Moosend mentions that sending emails to invalid or inactive email addresses can hurt your sender reputation. Good list hygiene is critical.
Email marketer from StackExchange answers that IP reputation directly affects your deliverability. An IP address with a history of spamming will find it much harder to get emails delivered.
Marketer from Email Geeks responds that if several dedicated IPs are in the same range, the behavior on one IP *could* affect others, but it may not, as there are many variables. Also it's possible you were given an IP that is already on MS' internal blocklist.
Email marketer from Neil Patel Blog explains that your IP reputation is influenced by your email sending habits. Poor sending practices can damage your IP reputation, leading to deliverability issues for other users on the same IP range.
Marketer from Email Geeks shares that it's possible that the ESP has a range of IPs impacted if one sender is doing bad enough stuff. Domain reputation is very important and that using the same domain in a different IP range could affect the reputation of that same domain used within a different IP range.
Email marketer from Litmus shares that your domain reputation matters for email deliverability. A poor domain reputation will result in more emails landing in the spam folder.
Email marketer from SparkPost answers that sudden spikes in sending volume from a new IP address can damage your IP reputation. Gradual warming is essential.
Email marketer from Reddit explains that one of the downsides of shared IPs is that you are at the mercy of the other senders. If they send spam, it can affect everyone on the IP, including you.
What the experts say3Expert opinions
Expert from SpamResource explains that a major challenge with shared IPs is the potential for 'noisy neighbors'. The actions of other senders on the same IP can negatively impact your sending reputation.
Expert from Word to the Wise explains that the email behavior of your IP neighbors can indeed affect your email deliverability, particularly with smaller volume senders. Being on an IP with senders who are frequently blocked can impact your own reputation.
Expert from SpamResource answers that your IP reputation is crucial for deliverability. A bad IP reputation can cause your emails to be blocked or sent to the spam folder.
What the documentation says4Technical articles
Documentation from Google details that IP reputation is a crucial factor for Gmail deliverability. Sending a high volume of unwanted mail from an IP address can negatively impact its reputation and cause deliverability issues.
Documentation from Microsoft explains that the sender's IP address reputation is a key factor in determining whether or not an email is delivered to the inbox. They actively monitor the IP addresses used to send email to their services.
Documentation from AWS SES shares that they maintain strict policies about sending spam. Violation of these policies will result in suspension of your sending privileges and damage to your IP reputation.
Documentation from Spamhaus shares that IP addresses with a history of sending spam are more likely to be blocked by email providers. Your IP reputation is affected by the volume of spam complaints received.