Teams won't send and receive invitations to other accounts

Question

Teams won't send and receive invitations to other accounts

Giuseppe Colombo 0

My TEAMS was working very well until few weeks ago in term of sending and receiving invitations to other accounts. Since few weeks ago, I have noticed that Teams doesn't send invitations two of my email accounts, while it works very well with other email accounts I have.

Could you please help to solve this issue? thank you

5 answers

Your answer

Answer 1

Giuseppe Colombo 0

I have tried to contact a support agent but without success. Because it is a Microsoft home subscription (non business) there is no assistance!

Also, it is not easy to navigate in the microsoft website; I don't know if this is just my opinion or also other customers have experienced that.

As of today, I still don't know how my Teams can work again how it used to be until one month ago. I would be very happy if someone could solve my issue.

Thank you

Winnie-B 5,525 Reputation points Microsoft External Staff Moderator

2026-02-10T08:54:40.0766667+00:00

Hi Giuseppe Colombo

Thank you for your update. Please try contacting support again by referring to this article: Schedule a meeting in Microsoft Teams Free - Microsoft Support

Scroll down to the Contact us section and click the contact support link.

I truly appreciate your effort and thank you so much for your understanding.

Answer 2

Giuseppe Colombo 0

Therefore, if the Teams invite is sent to vh****@ambamascapital.com --> Teams invite is received. If the invite is sent to the other two email address g******@ambamascapital.com and o******@ambamascapital.com--> Teams invite is not received

Winnie-B 5,525 Reputation points Microsoft External Staff Moderator

2026-02-08T01:08:01.3066667+00:00

Hi Giuseppe Colombo

Thank you for your detailed updates. Please try checking the three account aliases. You can refer to this official guidance: Add or remove an email alias in Outlook.com - Microsoft Support

Regarding the third email: when you send a meeting invitation through Microsoft Teams, Microsoft cannot access your external email address to send the invitation. Instead, it sends the invitation using a randomly assigned Microsoft email address that ends with @outlook.com. As a result, the invitation emails are actually sent to your alias with the outlook.com domain. Therefore, please try creating an alias that uses the outlook.com domain and set it as the primary alias. Also, do not delete your current third‑party email address, please keep it as a secondary alias.

Thank you for your understanding!
Giuseppe Colombo 0 Reputation points

2026-02-08T04:37:22.31+00:00

Hello, I feel that the current approach may not be the most effective way to resolve my issue, as the suggestions provided so far haven’t fully addressed it and the problem is still ongoing.

Would it be possible to connect with Teams customer service in real time to work together on finding a solution?
Winnie-B 5,525 Reputation points Microsoft External Staff Moderator

2026-02-09T07:54:53.0333333+00:00
Hi Giuseppe Colombo

Thank you for your response. At this point, please contact Microsoft Support directly for further assistance. It may offer live chat and, depending on your subscription/region, an option to request a callback:

Please follow the following steps to reach them:

Go to Contact - Microsoft Support

In the search box, type the issue keyword.

Click "Get Help", then scroll to the bottom and select "Contact Support”.

Select Products and Services and choose the appropriate category.

Look for and select "Chat with a support agent in your web browser" (during business hours) or a similar callback option (if available). Explain your situation clearly.

Please note that The Chat support team only works at certain times, so if the last window says you are not available, try to open it again the next day. If you prefer phone support, you can leave a phone number. That way, they can contact you back and help you further.

I truly appreciate your effort and thank you so much for your understanding.

Answer 3

Giuseppe Colombo 0

User's image

this is what I've always done when creating a Teams invite and the email address included has received the invite.

Yes, my domain is Ionos'. I dont use outlook. I use the Mail App of my Mac and the account is set as "Other Mail Account" where I enter all the IMAP info.

Answer 4

Giuseppe Colombo 0

Hi,

I am using the Microsoft Teams Free.

I don't get any error message. The invitation appear to send but they never receive it neither spam or junk.

Teams does not say anything if they are allowed to join.

Another important information, is that if I send the invitation to another account with the same email extension, it works fine.

Thank you

Giuseppe Colombo 0 Reputation points

2026-01-28T09:54:24.0466667+00:00

let me know if you need those two email addresses that cause this issue
Winnie-B 5,525 Reputation points Microsoft External Staff Moderator

2026-01-29T08:35:32.06+00:00
Hello Giuseppe Colombo

Thank you for the update. I understand how frustrating it is when Teams shows an invite as sent but specific recipients never receive anything. Please kindly try these workarounds:

Open the meeting (or meeting chat) and use Share meeting invite / Copy meeting link, then send that link to the two affected accounts via any channel (email/chat/SMS). Please refer to Microsoft’s steps: Create a meeting in Microsoft Teams Free - Microsoft Support

You can also invite people to Teams Free by sharing an invite link from Teams (it will copy a link you can send). Official guide: Invite contacts to Microsoft Teams Free - Microsoft Support

Additionally, please check your Teams Free profile privacy setting to ensure your email is visible on your profile card. Please see Manage what contact information others can view in Microsoft Teams Free - Microsoft Support

Optional client check (if you’re using the Windows desktop app): please clear the Teams cache and restart Teams: Clear the Teams client cache

Thank you for your patience and understanding. Please feel free to reach back and let me know how it goes.
Giuseppe Colombo 0 Reputation points

2026-01-29T12:18:40.3733333+00:00

the issue is still the same
Winnie-B 5,525 Reputation points Microsoft External Staff Moderator

2026-02-02T07:31:35.5366667+00:00
Hi Giuseppe Colombo

Thanks for your response. To help me narrow down the issue, could you please clarify:

Are both of the affected accounts personal accounts?

Have you tried adding your sending account to the whitelist in both accounts?

Looking forward to your reply and I'll assist further.
Giuseppe Colombo 0 Reputation points

2026-02-02T08:22:00.67+00:00

Yes, they are both personal accounts.

what do you mean adding my sending accounts to the whitelist?

FYI, I used TEAMS sending to both accounts until one month ago. Then, suddenly I had this issue.

Also, I’ve tried to consider a third personal account with same extension email in TEAMS and it works well. So it is something asscociated to those 2 accounts only.

Could it be that those accounts are linked with my Microsoft account?

thank you
Winnie-B 5,525 Reputation points Microsoft External Staff Moderator

2026-02-03T08:32:38.6633333+00:00

Hi Giuseppe Colombo

Thank you for your detailed updates. What I mean by adding a whitelist is that you should go to Mail Settings on both affected accounts and search for Add Safe Sender List. Then, add the account that is sending the invitations to the safe sender list on both accounts. Currently, the system might be treating the account that sends the invitations as a spam sender. This does not mean it will happen for every account in the same scenario, but adding it to the Safe sender list can help improve its reputation. This may be the root cause of the issue. Please kindly try this and share your update with me.

Thanks again for your precious time and understanding.
Giuseppe Colombo 0 Reputation points

2026-02-03T08:36:41.2133333+00:00

FYI, I've added my sending account to the whitelist and still does not work.

I look forward to hearing from you to solve this issue.

Thank you
Ian-T 7,135 Reputation points Microsoft External Staff Moderator

2026-02-04T11:17:51.3833333+00:00

Hi Giuseppe Colombo

Thank you for your response.

I have performed some test and found that your "vho*****@ambamascapital.com" account does not exist. Please kindly provide a screenshot of your Teams account ("vho*****@ambamascapital.com") via Private Message so that I can have a further look on it. Here's an example screenshot:

I also us a public DNS tool called https://dnschecker.org/ and found that your domain also uses ionos's mail. Please kindly check again to see if you are using other mailbox, not just Outlook.

Disclaimer: This is a non-Microsoft website. The page appears to be providing accurate and safe information. Watch out for ads on the site that may advertise products frequently classified as PUP (Potentially Unwanted Products). Thoroughly research any product advertised on the site before you decide to download and install it.

Thank you for your time and patience.
Winnie-B 5,525 Reputation points Microsoft External Staff Moderator

2026-02-05T08:37:03.2233333+00:00

Hi Giuseppe Colombo

Thank you for your patience. Ian‑T has shared the next steps in his reply above. When you have a moment, could you please check Ian‑T’s answer and provided the needed screenshot via Private Message?

Once you’ve done that, please feel free to reach back and we’ll continue assisting you.

Warm regards

Answer 5

Hi Giuseppe Colombo

Thank you for reaching out to Microsoft Q&A Forum. I understand how frustrating it is when Teams invitations work with some accounts but not others. especially when it was working fine just a few weeks ago.

To let me help you more effectively, could you please kindly help me narrow down the issue:

1. What type of Teams are you using?

Microsoft Teams Free (personal account - @outlook.com, @hotmail.com)
Teams for work/business (company/organization email)
Teams for education (school/university email)

2. What happens for the two affected email accounts?

For example:

Do you get any error message? (if yes, what does it say?)
Does the invitation appear to send but they never receive it even in Junk/Spam)?
Does Teams say they're not allowed to join?

Looking forward to your response so I can guide you further. Thank you for your understanding.

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Teams won't send and receive invitations to other accounts

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