Whitelisting an email means telling your email provider that you want to receive messages from a certain sender in your inbox, not in your spam or junk folder. This can help you avoid missing important emails that might get filtered out by mistake.

To whitelist an email, you need to know what is whitelist and how it works. A whitelist email address is one that you trust and want to hear from. By adding it to your whitelist, you tell your email provider to let it through to your inbox every time.

If you don't whitelist email senders, you might not get notified when they send you something important that you need to read. No matter what email provider you use, it's essential to know how to whitelist an email so that nothing gets lost or overlooked.

1. Click the settings button (in the top-right corner of the screen), then select “Settings” from the resulting drop-down menu.
2. Navigate to the tab labeled Filtered and Blocked Addresses to access information about your existing filters.
3. Select Create a new filter and enter the emails or domains you want to whitelist.

To whitelist a single email address, for example, type the entire address. On the other hand, if you’re trying to whitelist every sender from a certain domain, type the domain alone, such as “@speedicalc.com”. This will tell Gmail to approve every message from Speedicalc.

1. Click Create filter to approve the new filter, then mark Never send to Spam to whitelist every email within the filter. You can also choose to Star these emails, apply a given label, or mark them as important.

1. Open the Gmail application.
2. Navigate to Spam or Junk folder.
3. Click on the message you wish to view.
4. Select the option Report not spam.
5. You will now receive messages from this sender as normal.

If you want to make sure you always get emails from a certain sender or website in Outlook.com, you can add them to a list called Safe senders. This means that even if your spam filters are very strict, you won't miss any messages from them. To do this, you need to enter their email address or domain name in the Safe senders group.

1. 1. Click on Settings, then View all Outlook settings.

1. Go to Junk email, then choose Safe senders and domains or Safe mailing lists to select the domain or email you want to whitelist.
2. To add a domain name or email address to Safe senders, type it in the box. For domain names, don't forget the @ sign. This way, you'll only get emails from the exact domain name you entered, not any variations of it.

A faster and easier way to do the same thing is to just add the email address of the person who sent you a message to your Outlook Contacts. You don't have to type in any details yourself with this method.

Yahoo Mail makes it super easy to whitelist a sender or domain name. If you already got an email from them, just find it in the Bulk folder and click Not Spam. That's it! Yahoo Mail will remember your choice and let future emails from them go straight to your inbox.

But what if you haven't received any email from them yet? No worries, you can still whitelist them by following these steps:

1. Navigate to Settings icon, then click More Settings from the Yahoo Mail menu.
2. Select Filters and hit Add new filters to enter information about the domain name or sender. 
3. This is where you can type any text that you want to allow in your future emails. It could be an email address or a domain name, or something that you think will be in the email content.

If you want to whitelist a domain name or email sender on Yahoo Mail, the easiest way is to do it after you get a message from them in your Bulk folder. So, you can ask them to send you a test email first and then whitelist them from there.

A common problem for people who want to whitelist emails on AOL is that AOL doesn't use a regular whitelist system. Instead, it trusts any email address that a user has saved in their address book. This means that the address book in AOL works like a whitelist for Gmail and Outlook.

Here are step-by-step instructions for whitelisting an email address in AOL:

1. Log in to your AOL account.
2. Open Contacts from the left navigation pane.
3. Click the New Contact icon and enter the required information.
4. Click the Add Contact button located at the bottom.

It's not hard to do this, and getting rid of contacts is just as simple. Just pick the contact you don't want and hit the Delete button on top of the page. If you want to make sure they can't email you again, you need to go to Options -> Mail Settings -> Spam Settings. There, you can put the contact on your email blacklist.

Zoho is designed for businesses, so it takes spam emails very seriously. Spam emails can trick you into giving away your personal or financial information, or infect your device with malware. That's why Zoho gives you powerful tools to block unwanted emails and make sure you receive the ones you need.

One of these tools is the Zoho whitelist, which lets you add an email address to a list of trusted senders. Here's how you can do that:

1. Login to Zoho Mail.
2. Go to Settings.
3. Navigate to Anti-Spam List.
4. Click on the Email Address tab and then click on Whitelist/Blacklist Emails.
5. Click the Add new whitelist email field.
6. Enter the address and press the Enter key.

If you want to keep your emails safe from prying eyes and annoying spammers, ProtonMail is a great choice. It has a strong encryption system that scrambles your messages so only you and the intended recipient can read them. Plus, it has a smart feature that automatically filters out junk mail and puts it in the spam folder.

But sometimes, the smart feature can be too smart and mark a good email as spam by mistake. That's why ProtonMail lets you whitelist email addresses that you trust. When you do that, ProtonMail will always deliver emails from those addresses to your Inbox folder. Whitelisting an email in ProtonMail is easy, and you can do it by following these steps:

1. Log in to your ProtonMail account.
2. Go to the Settings section.
3. Click the Filters tab.
4. Select ADD NEW FILTER under the Whitelist section.
5. Enter the address and click SAVE.