Issues with MS Teams invites

Elsy Hassoun 0 Reputation points
2026-04-04T01:57:48.67+00:00

Hello, I am a sole trader and have only 2-3 teams meetings per month. I am using the available free teams calling service, but having problems with sending and receiving invites. People struggle to send me invites, and when I send an invite from my side, they receive an "undeliverable" email right after the invite is received. Another issue is that if I receive an invite, it does not show on my calendar. My MS account is under "******@prodraftingservices.com". This work email in linked to my personal account ******@gmail.com. Any idea why is this happening?

Thanks,

Elsy

Microsoft Teams | Microsoft Teams Free | Calendar
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  1. EmilyS726 245.2K Reputation points Independent Advisor
    2026-04-04T02:57:42.16+00:00

    Hello,

    When your Microsoft account uses a non-Microsoft email address, it does not have its own email functionality. The actual sending and receiving of emails still happens through your third party email provider. As a result, when you send a meeting invitation through Teams, Microsoft cannot access your external email to send it. Instead, it sends the invitation using a randomly assigned Microsoft email address, one that ends in outlook.com. This is why recipients cannot reply to the invite directly. However, your meeting itself is not affected.

    To give your Microsoft account proper email functionality, you can create a Microsoft-based email alias and set it as the primary alias. Here is how:

    Go to https://account.live.com and sign in to your personal account.

    Click on "Your Info," then choose "Sign-in preferences," and select "Add an alias."

    Choose to create a new alias. It will allow you to create one that's outlook.com.

    After creating it, set it as your primary alias.

    Keep your current third party email as a secondary alias. Do not remove it.

    You can then check emails at https://www.outlook.com.

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  2. AI answer

    2026-04-04T01:57:59.9333333+00:00

    The symptoms indicate that the account being used in Microsoft Teams is a personal/free Teams account, not a work/school (business) Teams account, and that calling/meeting features and calendar integration are limited in Microsoft Teams Free.

    Key points from the behavior described:

    • Difficulty sending and receiving meeting invites.
    • Recipients get “undeliverable” messages after receiving an invite.
    • Incoming invites do not appear on the calendar.
    • The business email (…@prodraftingservices.com) is linked to a personal Microsoft account (…@gmail.com).

    In Microsoft Teams Free and personal scenarios:

    • Phone calling options and full enterprise-grade meeting features are not supported the same way as in business (work/school) tenants.
    • Teams Free does not support the full telephony and calendar integration that business tenants with proper licenses have.
    • Using a custom business domain (like prodraftingservices.com) through a personal/free setup can cause issues with how invitations are routed and how calendars sync.

    To improve reliability for meeting invitations and calendar integration:

    1. Use a proper business (work) Teams environment with Microsoft 365 business licensing so that the prodraftingservices.com address is a work account in its own tenant, not just an alias on a personal account.
    2. Sign in to Teams with the correct work/school account (the one actually licensed for Teams and calendar services) rather than the personal/free account. If signed in with the wrong account, Teams features such as calendar and meeting integration may not appear or function correctly.
    3. Ensure that the email address used to send and receive invites is the same one configured as the primary sign-in and calendar address in the Microsoft 365 tenant. Mixed use of a custom domain tied to a personal account and a separate Gmail identity can cause delivery and calendar-mapping problems.

    If continuing with Teams Free:

    • Expect limitations around calling and calendar integration compared to a business tenant.
    • For more complex scenarios (custom domain, consistent calendar and invite behavior), moving to a business subscription and using the Microsoft 365 admin center to manage users, domains, and licenses is the supported path.

    For further help with domain and business email integration with Teams, see the guidance on integrating business email and custom domains.

    References:

    AI-generated content may be incorrect. Read our transparency notes for more information.

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