The elements of the B2B collaboration invitation email - Azure Active Directory

Invitation emails are a critical component to bring partners on board as B2B collaboration users in Azure AD. You can use them to increase the recipient's trust. you can add legitimacy and social proof to the email, to make sure the recipient feels comfortable with selecting the Get Started button to accept the invitation. This trust is a key means to reduce sharing friction. And you also want to make the email look great!

Screenshot showing the B2B invitation email

Explaining the email

Let's look at a few elements of the email so you know how best to use their capabilities.


The subject of the email follows the following pattern: You're invited to the <tenantname> organization

From address

We use a LinkedIn-like pattern for the From address. You should be clear who the inviter is and from which company, and also clarify that the email is coming from a Microsoft email address. The format is: Microsoft Invitations or <Display name of inviter> from <tenantname> (via Microsoft)

Reply To

The reply-to email is set to the inviter's email when available, so that replying to the email sends an email back to the inviter.


The invitation emails from your tenant use the company branding that you may have set up for your tenant. If you want to take advantage of this capability, here are the details on how to configure it. The banner logo appears in the email. Follow the image size and quality instructions here for best results. In addition, the company name also shows up in the call to action.

Call to action

The call to action consists of two parts: explaining why the recipient has received the mail and what the recipient is being asked to do about it.

  • The "why" section can be addressed using the following pattern: You've been invited to access applications in the <tenantname> organization

  • And the "what you're being asked to do" section is indicated by the presence of the Get Started button. When the recipient has been added without the need for invitations, this button doesn't show up.

Inviter's information

The inviter's display name is included in the email. And in addition, if you've set up a profile picture for your Azure AD account, the inviting email will include that picture as well. Both are intended to increase your recipient's confidence in the email.

If you haven't yet set up your profile picture, an icon with the inviter's initials in place of the picture is shown:

Screenshot showing the invitation with the inviter initials displayed


The body contains the message that the inviter composes when inviting a guest user to the directory, group, or app or by using the invitation API. It is a text area, so it does not process HTML tags for security reasons.

Screenshot showing the body of the invitation email

The footer contains the Microsoft company brand and lets the recipient know if the email was sent from an unmonitored alias.

Special cases:

  • The inviter doesn't have an email address in the inviting tenancy

    Screenshot when an inviter doesn't have email in the inviting tenancy

  • The recipient doesn't need to redeem the invitation

    Screenshot when the recipient doesn't need to redeem invitation

How the language is determined

The language presented to the guest user in the invitation email is determined by the following settings. These settings are listed in order of precedence. If a setting isn’t configured, the next setting in the list determines the language.

  • The messageLanguage property of the invitedUserMessageInfo object if the Create invitation API is used
  • The preferredLanguage property specified in the guest's user object
  • The Notification language set in the properties of the guest user’s home tenant (for Azure AD tenants only)
  • The Notification language set in the properties of the resource tenant

If none of these settings are configured, the language defaults to English (US).

Next steps

See the following articles on Azure AD B2B collaboration: