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Understanding Sendinblue Whitelisting for Better Email Delivery

Posted: Sun Aug 17, 2025 10:26 am
by raziarazia
This article talks about Sendinblue whitelisting. It's important if you use Sendinblue for sending emails. Whitelisting helps make sure your emails reach people's inboxes. Sometimes, emails go to the spam folder. Whitelisting can help stop this from happening. We will learn what whitelisting is and why it matters for Sendinblue users. This article will also tell you how to do it. Following these steps can improve your email delivery rates. More people will see the emails you send. This is good for your business or organization. Let's learn more about this useful process.


Why is Whitelisting Important?
Imagine sending important news to your friends. You write a great letter and put it in the mailbox. But what if the mailman thinks it's junk? Your friends might never get your letter. Email is kind of the same. When you send emails with Sendinblue, they travel through the internet. Sometimes, email systems can't tell if an email is good or bad. They might think your important email is spam. Spam is like junk mail. It's unwanted and annoying.

Whitelisting tells email systems that your emails are good. It's like telling the mailman, "Hey, this letter is for my friend. Please deliver it!" When you whitelist Sendinblue, you are helping email providers trust your messages. This means your emails have a better chance of landing in the inbox. If your emails go to the spam folder, people won't see them. This can hurt your communication and your business. Whitelisting is a simple step that can make a big difference. It helps your messages get where they need to go.

Understanding Email Delivery
To understand whitelisting, we should first talk about how email works. When you send an email, it goes from your computer to Sendinblue's servers. Then, Sendinblue sends it to the email server of the person you are emailing. This server looks at the email to decide if it's safe and important czech republic whatsapp number list . It checks a few things, like who sent the email and what's inside it. Sometimes, it might see something that looks like spam. If it does, the email might go to the spam folder instead of the inbox.

Several things can make an email look like spam. If you send too many emails at once, it might look suspicious. If your email has words that spammers often use, that can also be a problem. Also, if the email server doesn't know Sendinblue is a trusted sender, it might be cautious. Whitelisting helps with this last point. When the receiving email server sees that Sendinblue is on a whitelist, it's more likely to trust the email. This improves your email delivery rate. A higher delivery rate means more of your emails reach the intended recipients.

How to Whitelist Sendinblue
Whitelisting Sendinblue involves adding some information to your email account's settings. The exact steps might be a little different depending on your email provider (like Gmail, Yahoo, Outlook, etc.). However, the general idea is the same. You need to tell your email system that emails coming from Sendinblue are safe. Here are some common ways to do this:

Adding Sendinblue to Your Contacts or Safe Senders List
One of the easiest ways to whitelist Sendinblue is to add their email addresses or sending domains to your contacts or safe senders list.

Gmail: Go to your Gmail settings, then click on "Filters and Blocked Addresses." Click on "Create a new filter." In the "From" field, enter the Sendinblue sending domains (you can find these on Sendinblue's website). Click "Create filter." Then, check the box next to "Never send it to Spam" and click "Create filter." You can also simply add an email you receive from Sendinblue to your contacts. Gmail usually trusts emails from your contacts.

Outlook: In Outlook, go to "Home" and click on "Junk." Then, select "Junk E-mail Options." Go to the "Safe Senders" tab and click "Add." Enter the Sendinblue sending domains and click "OK." You can also add specific Sendinblue email addresses here.

Yahoo Mail: In Yahoo Mail, go to "Settings" and then "More Settings." Click on "Filters." Click "Add new filters." Choose "Sender" in the first dropdown and "contains" in the second. Enter the Sendinblue sending domains. Then, choose "Inbox" as the folder to move the email to. Click "Save."

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By adding Sendinblue to your safe senders list or contacts, you are telling your email provider that you trust emails from them. This significantly increases the chances of these emails landing in your inbox instead of the spam folder.


Checking Your Spam Folder and Marking Emails as "Not Spam"
Sometimes, even legitimate emails can accidentally end up in the spam folder. It's a good idea to regularly check your spam or junk folder for any emails from Sendinblue. If you find any, mark them as "Not spam" or "Not junk." This action helps your email provider learn that you consider these emails important and should be delivered to your inbox in the future.

When you mark an email as "Not spam," you are essentially telling your email system, "This email is okay. Please don't send emails like this to spam again." This can also help improve the deliverability of future emails from the same sender. It's a simple step that provides valuable feedback to your email provider's filtering system.

Asking Recipients to Whitelist You
If you are sending emails to a list of subscribers or customers through Sendinblue, it's also a good idea to ask them to whitelist your sending email address or the Sendinblue domains. You can include instructions on how to do this in your welcome emails or at the bottom of your newsletters.

Providing clear and easy-to-follow instructions for whitelisting can encourage your recipients to take action. This not only ensures they receive your important emails but also helps improve your overall sender reputation. When many recipients whitelist your emails, it signals to email providers that your messages are wanted and valuable.

Verifying SPF and DKIM Records
SPF (Sender Policy Framework) and DKIM (DomainKeys Identified Mail) are email authentication methods that help verify the sender's identity. Sendinblue usually provides information on how to set up these records for your domain. Ensuring that your SPF and DKIM records are correctly configured can significantly improve your email deliverability and sender reputation.

These technical settings help email providers confirm that Sendinblue is authorized to send emails on behalf of your domain. Correctly configured SPF and DKIM records make your emails look more legitimate and less like spam, increasing the likelihood of them reaching the inbox.

Checking Blacklists
Sometimes, if your domain or Sendinblue's IP addresses are on a blacklist, your emails might not get delivered. Sendinblue usually monitors blacklists and takes steps to get removed if necessary. However, you can also check if your domain or Sendinblue's sending IPs are on any blacklists using online tools. If you find any issues, you should contact Sendinblue support for assistance.

Blacklists are lists of IP addresses or domains that have been identified as sources of spam. Being on a blacklist can severely impact your email delivery rates. Regularly checking and addressing any blacklist issues is crucial for maintaining good email deliverability.

Conclusion
Whitelisting Sendinblue is a proactive step that can greatly improve your email delivery rates. By understanding why it's important and following the steps outlined in this article, you can ensure that more of your emails reach their intended recipients. Remember to add Sendinblue to your safe senders list or contacts, regularly check your spam folder, ask your recipients to whitelist you, and ensure your SPF and DKIM records are properly configured. These simple actions can lead to better communication and success with your email campaigns.