What does IP address whitelisting mean?

IP address whitelisting in email marketing means adding a sender’s IP address to a recipient’s approved list, allowing emails from that IP to bypass spam ﬁlters. It helps ensure reliable delivery, especially to corporate or strict email servers, and improves trust and inbox placement for consistent, legitimate senders.

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Related Articles
Allow Listing of IP Addresses
If you're sending emails to your team members from within an organization, you may face issues because of the same domain being involved. This can be due to the email firewall taking necessary precautionary measures to combat any spoofing attacks, as ...
Will IP address whitelisting help email delivery?
Yes. IP address whitelisting helps improve email delivery by allowing emails to bypass spam ﬁlters, reducing the chances of being blocked or sent to junk folders, especially on strict mail servers.
What does a shared IP address mean?
In Zoho Campaigns, a shared IP address means multiple users send emails from the same IP. This setup shares sender reputation, so your email deliverability can be affected by other users’ sending behavior and practices.
What is a dedicated IP address?
In Zoho Campaigns, your email campaigns are typically sent from a shared IP, where multiple users share the same IP address. If one user experiences deliverability issues, it can affect the reputation of that IP, impacting all of the other users. A ...
How might your IP address get blacklisted?
Your IP address may get blacklisted due to high spam complaints, poor list hygiene (invalid emails), low engagement, or improper email authentication (missing SPF/DKIM). Other causes include high bounce rates or sharing an IP with spammers. ...