IN BRIEF
Learn how to configure your mail settings to prevent messages from a particular sender or domain from being filtered into your Junk/Spam folder. Depending on your email service, you can use an Allowlist (often called Safe Senders, Approved Senders, or Allow List), Contacts, Not Spam actions, and/or Filters/Rules. This is particularly important to ensure that you do not miss any communications from iClassPro!

• Overview
• Gmail (personal @gmail.com)
• Google Workspace Admin (Gmail for business)
• Outlook.com (web)
• Outlook for Windows/macOS (desktop apps)
• Microsoft 365 Admin (Exchange Online/Defender)
• Apple iCloud Mail
• Yahoo Mail
• Proton Mail
• AOL Mail
• Tips & Best Practices
• Troubleshooting / FAQ

Overview

Adding a sender or domain to your email service’s safe or approved list ensures that important messages are delivered to your inbox instead of being flagged as junk or spam. This is helpful for newsletters, customer communications, or automated notifications that you rely on regularly. This is particularly important to ensure that you do not miss any communications from iClassPro!

Allowlists (often called Safe senders, Approved senders, or Allow list), Contacts, Not Spam actions, and/or Filters/Rules give you greater control over which emails you always want to see, reducing the risk of missing critical information.

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Gmail (personal @gmail.com)

Overview

Gmail does not have a traditional “Safe senders” list for personal accounts. Instead, you can: add the sender to Google Contacts, mark messages Not spam, and/or create a filter that tells Gmail to Never send it to Spam. These actions train Gmail and help future messages land in the Inbox.

NOTE: To ensure you always see communications from iClassPro, we recommended creating a filter to allow all email addresses associated with our domain(s).

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Options

1. Open the message and select Report not spam (or move it out of Spam).
2. Add the sender to Google Contacts. In the message header, select the sender name, then choose Add to contacts.
3. Create a filter in Gmail:
   • Select the “Filter” icon in the “Search” box at the top of the screen.
   • Enter the sender’s email address or domain in the From field.
   • Choose Create filter.
   • Enable Never send it to Spam.
   • Select Create filter.

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Notes

• Be sure to include domain entries for both iclasspro.com and ses.iClassPro.com. You can separate the domains with a comma (e.g. “iclasspro.com, ses.iClassPro.com”).
• If you do not see the Never send it to Spam option, use the Create filter flow from the Settings section (“gear” icon) to see all options.
• Google Workspace accounts support admin-managed Approved senders and Allowlists; see the next section for organization‑wide controls.

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Google Workspace Admin (Gmail for business)

Overview

Admins can create organization‑wide allow/approved sender settings to bypass spam filtering for specific senders, domains, or IPs. Options include Approved senders, Email allowlist (IP), and custom spam settings.

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Step-By-Step Instructions

1. Sign in with an administrator account to the Google Admin console.
   • NOTE: If you aren’t using an administrator account, you can’t access the Admin console.
2. Navigate to Menu and then Apps > Google Workspace > Gmail > Spam, Phishing and Malware.
   • NOTE: Requires having the Gmail Settings administrator privilege.
3. On the left, select an organizational unit.
4. Scroll to Spam and click Configure or Add another rule.
5. In the Add setting box, enter a unique name for the setting.
6. Select the “Bypass spam filters and hide warnings for messages from senders or domains in selected lists” filtering option.
7. Select one or more address lists of approved senders to apply this option, or create a new address list.
   • NOTE: You must select at least one address list, or this option has no effect.
8. At the bottom of the Add setting box, click Save.
9. Verify that the new setting is listed in the Spam settings table.

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Notes

• Be sure to include domain entries for both iclasspro.com and ses.iClassPro.com. You can separate the domains with a comma (e.g. “iclasspro.com, ses.iClassPro.com”).
• Malware or high‑confidence phishing may still be quarantined even if allowed elsewhere.
• Changes can take up to 24 hours but typically happen more quickly.

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Outlook.com (web)

Overview

Outlook.com provides a Safe senders and domains list that ensures messages from those senders do not go to Junk Email.

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Step-By-Step Instructions

1. Log into Outlook.com.
2. Click on the Settings gear icon in the upper right-hand corner of the page.
3. Select Mail, then click on Junk email.
4. Under Safe senders and domains, select Add safe sender
5. Enter the email address or domain you wish to allow.
6. Select OK.

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Notes

• Be sure to include domain entries for both iclasspro.com and ses.iClassPro.com.
• If good mail lands in Junk Email, select It’s not junk and/or add the sender to Safe senders and domains to improve future handling.

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Outlook for Windows/macOS (desktop apps)

Overview

Outlook desktop has a Junk Email Options dialog with Safe Senders, Safe Recipients, and Blocked Senders tabs. Adding addresses or domains to Safe Senders keeps messages out of Junk Email.

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Windows (classic Outlook)

1. In Outlook, navigate to Home → Junk → Junk E‑mail Options.
2. On Safe Senders, select Add…
3. Enter the email address or domain you wish to allow.
4. Select OK.

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macOS (Outlook for Mac)

• Adjust Junk Email Preferences to allow specific domains or block senders.
• Adding important people to Contacts also helps keep their messages out of Junk.

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Notes

• Be sure to include domain entries for both iclasspro.com and ses.iClassPro.com.
• You can set Safe Lists Only protection level so only mail from Safe Senders/Recipients is delivered (highly restrictive).
• Outlook supports very large lists (up to 10,000 entries combined for blocked/safe in some versions).

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Microsoft 365 Admin (Exchange Online/Defender)

Overview

Admins can allow specific senders or domains across the tenant using Tenant Allow/Block List, Anti‑spam policies (allowed sender/domain lists), and Connection filtering (IP Allow List). These entries help trusted mail bypass spam/phishing verdicts for users.

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Step-By-Step Instructions

1. In the Microsoft Defender portal:
   • Navigate to Policies & Rules > Threat Policies > Rules section > Tenant Allow/Block Lists.
   • Or, to go directly to the Tenant Allow/Block Lists page, use https://security.microsoft.com/tenantAllowBlockList.
2. On the Tenant Allow/Block Lists page, verify that the Domains & addresses tab is selected.
3. On the Domains & addresses tab, select Add, and then select Allow.
4. In the Allow domains & addresses flyout that opens, configure the following settings:
   • Domains & addresses: Enter one email address or domain per line, up to a maximum of 20.
   • Remove allow entry after: Select from the following values:
     • 45 days after last used date (default)
     • 1 day
     • 7 days
     • Specific date: The maximum value is 30 days from today.
   • Optional note: Enter descriptive text for why you're allowing the email addresses or domains.
5. When you're finished in the Block domains & addresses flyout, select Add.
   • Back on the Domains & email addresses tab, the entry should be listed. If not, repeat the previous steps and ensure that you have entered all required details.

NOTE: Be sure to include domain entries for both iclasspro.com and ses.iClassPro.com.

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Apple iCloud Mail

Overview

To "trust" senders in Apple iCloud Mail, add them to your Contacts, which signals to the spam filter that you want emails from them, or create a Mail Rule to move their messages directly to the Inbox or a designated folder.

You can also mark emails as Not Junk if they end up in your Spam folder, which helps train the filter to deliver future messages from that sender to your Inbox.

NOTE: To ensure you always see communications from iClassPro, we recommended creating a Mail Rule to allow all email addresses associated with our domain(s).

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Using Contacts

This is a straightforward method to help the iCloud spam filter learn your preferences.

1. Go to Contacts on iCloud.com.
2. Click the Add (+) button in the sidebar
3. Choose New Contact.
4. Enter the sender's email address and other details, then select "Done".

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Creating a Mail Rule

For more active control, you can set up a rule to automatically handle emails from specific senders.

On iCloud.com

1. Click the Settings icon (gear) in the lower-left corner.
2. Select Rules.
3. Click Add a Rule.
4. Enter a descriptive name for your rule (e.g., "Trusted Senders").
5. Set the Conditions:
   • In the If a message section, choose Sender’s Domain from the first pop-up menu.
   • For From, select is from as the condition, then choose the Sender's Domain option.
   • Enter the specific sender domain you want to filter.
6. Define the Action:
   • Under the Then section, select Move message to mailbox.
7. Click the Add button to save your new rule.

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On iOS 17+ 

1. Go to Settings on your iPhone or iPad.
2. Tap on your name (Apple ID) at the top.
3. Scroll down and tap iCloud Mail > iCloud Mail Rules.
4. Tap Add Rule, then follow the prompts to define your conditions (e.g., using the "From" or "Sender's Domain" condition from above) and actions (e.g. Move message to mailbox).

NOTE: Be sure to include domain entries for both iclasspro.com and ses.iClassPro.com.

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Training the Spam Filter

If a message you expect goes to the Junk folder, you can directly teach the system to recognize it as legitimate.

1. Open your Mail app on your iPhone, iPad, or Mac.
2. Locate the message in your Junk folder.
3. Mark it as Not Junk. This action helps the filter learn that this sender should not be treated as spam in the future.

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Yahoo Mail

Overview

Yahoo Mail does not offer a traditional safe senders list. To trust senders, mark good mail Not Spam, add them to Contacts, and (optionally) create Filters to route messages to Inbox or a folder. You can block unwanted senders under Security and privacy.

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Using the Contacts List

This is the simplest method to allow an individual email address: 

1. Open your Yahoo Mail account.
2. Click on the Contacts icon (address book) located under the Yahoo Mail logo.
3. Click on New Contact.
4. Enter the sender's email address and other contact information.
5. Click Save.

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Creating a Filter

This method is for allowing an entire domain or specific senders: 

1. Click the Settings icon (gear) in the upper right corner of Yahoo Mail.
2. Select More Settings.
3. Click Filters in the left-hand panel.
4. Click Add or Add new filters to create a new filter.
5. Enter a descriptive name for your filter (e.g., "Trusted Senders").
6. In the From field, enter the email address or the entire domain you want to allow.
7. Select Inbox from the Move the message to or Destination folder options.
8. Click Save to apply the filter.

NOTE: Be sure to include domain entries for both iclasspro.com and ses.iClassPro.com.

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Training the Spam Filter

If an email from a trusted sender lands in your spam folder, you can train Yahoo Mail to recognize future messages: 

1. Open your Spam folder.
2. Select the email from the unwanted sender.
3. Click the Not Spam button to move the email to your Inbox. This action helps the filter learn that this sender should not be treated as spam in the future.

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Proton Mail

Overview

Proton Mail includes dedicated Allow and Block lists alongside spam filtering. You can add specific email addresses or entire domains to the Allow list so they bypass spam.

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Step-By-Step Instructions (web)

1. Log into your Proton Mail account.
2. Click on the Settings icon (gear) at the top of the screen.
3. Click on All Settings.
4. Choose Filters from the left-hand menu.
5. Select Add address or domain,
6. Click Allow.
7. Choose Email or Domain.
8. Depending on your choice, enter the email address or the entire domain you want to allow.
9. Click Add address.

NOTE: Be sure to include domain entries for both iclasspro.com and ses.iClassPro.com.

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AOL Mail

Overview

AOL Mail does not have a separate “safe senders” list; trust is based on marking mail Not Spam, adding Contacts, and using Filter Rules.

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Add a Mail Contact

1. Click the Contacts icon located in the left panel of your inbox.
2. Click the Add a new contact button or icon.
3. Enter the contact's name, email address, and any other relevant information.
4. Click Save to add the contact to your address book.

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Create a Filter Rule

This method is for allowing an entire domain or specific senders: 

1. Click the Settings icon (gear) in the upper right corner of Yahoo Mail.
2. Select More Settings.
3. Click Filters in the left-hand panel.
4. Click the Add new filter button to create a new filter.
5. Enter a descriptive name for your filter (e.g., "Trusted Senders").
6. Under Filter Rules, select From.
7. In the Contains field, enter the email address or the entire domain you want to allow.
8. Select Inbox from the Move to folder option.
9. Click Save to apply the filter.

NOTE: Be sure to include domain entries for both iclasspro.com and ses.iClassPro.com.

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Training the Spam Filter

1. Go to your Inbox.
2. In the left-hand panel, click on the Spam folder.
3. Click the checkbox next to the message(s) you want to mark as not spam.
4. A button or option labeled Not Spam will appear at the top of your message list.
5. Click the Not Spam button to move the email back to your inbox. 

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Tips & Best Practices

• Adding a sender to Contacts plus marking Not spam/Not junk provides strong positive signals in most services.
• For domain‑level trust, it is preferred to allow the domain instead of only individual addresses when appropriate (Outlook Safe Senders, Proton Allow list, admin policies).
• If you manage a business domain, configure trust centrally (Google Workspace Approved senders/Email allowlist; Microsoft 365 Tenant Allow/Block List, Anti‑spam allowed lists, IP Allow List).
  • This should apply filters at the source and reduce the need to create rules in individual email accounts.
• Messages identified as malware or high confidence phishing are quarantined regardless of allow entries (especially in Microsoft 365).

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Troubleshooting / FAQ

• Why are messages still going to Spam after I added a filter/allow entry?
  • Gmail and iCloud learn over time; continue using Not spam/Not junk and ensure the sender’s authentication (SPF, DKIM, DMARC) is correct.
    • For business Gmail, use admin Approved senders as needed.
• Can I just allow everything?
  • This is not recommended. Some platforms do not support fully disabling spam scanning (e.g., Gmail), and doing so increases risk. Use targeted allowlists or filters.
• What is the difference between Contacts, Filters, Safe senders, and Admin allowlists?
  • Contacts/Not spam: personal signals that help your mailbox trust a sender.
  • Filters/Rules: user‑level routing/handling (e.g., “Never send to Spam”).
  • Safe senders: explicit user‑level allowlist (primarily Microsoft Outlook/Outlook.com).
  • Admin allowlists: organization‑wide trust managed by your email administrator.

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