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Sending emails from Secondary Addresses in MS365


In today’s dynamic business environment, email communication remains at the heart of efficient collaboration. With the advent of cloud-based services like Microsoft 365, users enjoy more versatile options when it comes to managing their email identities. One such feature is the ability to send emails from secondary addresses, a capability that can significantly enhance your email communication.

Traditionally, in on-premises Exchange environments, users were restricted to sending emails using their primary SMTP addresses. Any attempt to send from an alternative alias required workarounds and often led to confusion. However, with Microsoft 365, this limitation has been eased through the SendFromAliasEnabled option, making email correspondence more flexible and efficient.

The SendFromAliasEnabled option is a feature in Microsoft 365 that allows users to send emails using secondary email addresses or aliases associated with their accounts. While the primary SMTP address remains the default sender, this option empowers users to choose an alias as the sender when composing an email.

How to enable SendFromAlias feature

To enable the SendFromAliasEnabled option in your Microsoft 365 environment, administrators can use the Set-OrganizationConfig cmdlet. This cmdlet allows you to configure various organization-wide settings, including the ability to send emails from secondary aliases.

Here’s a step-by-step guide to enabling this feature:

  1. Open the Exchange Online PowerShell module.
  2. Connect to your Microsoft 365 tenant by running the necessary authentication commands.
  3. Execute the following command to enable the SendFromAliasEnabled option:

Set-OrganizationConfig -SendfromAliasEnabled $true

  1. Confirm the change by verifying the organization’s configuration:

Get-OrganizationConfig | fl send*

Once enabled, users can send emails from their secondary aliases in a straightforward manner.

Sending emails from secondary email addresses

To utilize this newfound flexibility, users need to be aware of how to select a secondary alias when composing an email. In their email client, such as Outlook ou the Webmail, they should navigate to the “From” field (De in french) and select the desired alias. This way, the email recipient will see the chosen alias as the sender.

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