Why would you need to whitelist Mailchimp's IPs
This section would explain the main reasons for doing this. For example, if a company has a strict email firewall or spam filter, it might block emails from a service like Mailchimp because it doesn't recognize the sending servers. Whitelisting Mailchimp's IPs tells that company's system to trust the emails coming from those addresses, helping to telegram data ensure that important campaigns and transactional emails (like password resets) get delivered to inboxes and not to the spam folder.
Who needs to whitelist Mailchimp's IPs? The article would clarify that this is typically a task for an IT professional or a system administrator at a company. It's not usually something an individual Mailchimp user does for their own personal account.
How do you find Mailchimp's IP addresses? The article would explain that Mailchimp provides a list of their delivery IP addresses on a dedicated page on their website. It would also mention that these addresses are often in a specific format called CIDR and that they can sometimes change, so it's important to use the most up-to-date information.

What is the difference between a shared IP and a dedicated IP? This part could explain that most Mailchimp users send emails from "shared" IP addresses, which are used by many different customers. However, for an extra cost, some users can get a "dedicated" IP address that is used only by them. The article could explain how a dedicated IP can help with sender reputation and deliverability, especially for high-volume senders.
Step-by-step guide on how to whitelist. This section would provide a general, simplified guide for an IT professional, instructing them to:
Find Mailchimp's official IP addresses.
Log into their company's email server or firewall settings.
Add the Mailchimp IP addresses to the allowlist
Save the changes.
Important considerations and best practices. The article could conclude with some final tips, such as:
Always use the most current list of IP addresses from Mailchimp.
Understand that whitelisting isn't a silver bullet; good email content and a healthy sender reputation are also important.
Mentioning that some email clients or providers might not need whitelisting at all, while others, especially corporate firewalls, might.