Problems with sending emails

Dear Fawn and Flourish

Welcome to the Microsoft community.

According to your description, your Microsoft account is often blocked, which is unusual.

I noticed that you can send emails normally through your computer, but you will encounter unsendable emails (error code 533 5.4.0) when sending emails on your phone. Recently, many users have reported that the emails they sent triggered spam filters, most of which were sent from Outlook for Android. When spam filters are triggered, it is easy to cause the account to be locked.

We are currently investigating this matter and have reported it. We also want to collect some information from you:

1. Was your Microsoft mailbox created recently?
2. What device are you using? If it is a mobile phone, is it an Apple phone or an Android phone? What is the specific system version?
3. In which software are you currently setting up your account, Outlook for Android? What is the current version of the software? You can click the avatar in the upper right corner of the software - Settings - Help to check.

For your current problem, we recommend that you click the account avatar in the upper left corner of Outlook on your mobile phone, then click Settings in the lower right corner, enter feedback at the bottom, describe the problem in detail, and click Send to notify the Outlook team.

At the same time, we recommend that you use Webmail on your mobile browser to send emails for testing. If everything works well, we recommend that you temporarily access your emails through Webmail on your browser in the near future.

If you need further help, please feel free to reply. I will also let you know as soon as possible if there is any latest development on the issue.

Thank you for your understanding and support.

Best wishes

Forry.F - MSFT | Microsoft Community Support Specialist

Good morning,

I have verified my account but the issue is still happening

Thanks

Hello Fawn and Flourish,

Thank you for getting back to us with these details. I understand how inconvenient it must be to have email functionality disrupted, especially when you rely on your phone for sending messages. Based on the additional information provided, it seems your account might be temporarily restricted due to suspicious activity or a triggered junk email filter. Let me guide you through resolving this issue.

Your Outlook.com account appears to be suspended, which is preventing you from sending emails. The error message suggests a need for account verification and mentions that your message triggered the junk email filters (error code: 533 5.4.0).

Thank you for already troubleshooting and confirming that emails can be sent from your laptop. This indicates the issue is localized to your Outlook.com account rather than your device. Let’s resolve the suspension and address any triggers for junk email filtering.

Verify Your Account:

• Follow the instructions in the error message by tapping the Verify Account button.
• This will direct you to a Microsoft page where you can confirm your identity, typically via a phone number or alternative email. Completing this process should remove the suspension.

Edit the Email Message Content:

• The error suggests that your email may have been flagged by Microsoft’s junk email filters.
• Try sending a simple test email to yourself or another trusted account, avoiding links, attachments, or certain keywords that could trigger spam filters.

Check and Update Outlook App on Your Phone:

• Ensure that the Outlook app on your phone is up to date. Go to your app store and check for updates.
• If the issue persists, consider uninstalling and reinstalling the app to refresh the connection with your account.

Review Your Account Activity:

• Sign in to your Outlook.com account via a web browser and navigate to Settings > View All Outlook Settings > Mail > Junk Email.
• Ensure your account has not been compromised and that no unauthorized rules or blocked senders are set up.

Resolve Account Suspension via Microsoft Support:

• If verification does not resolve the issue, visit the Microsoft support page for account recovery: https://account.live.com.
• You may need to complete an additional identity verification step to lift the restriction.

Please try these steps and let me know how it goes. If the issue persists, share any additional details (e.g., what happens after verifying your account or editing your email), and I’ll assist further.

Appreciate your patience and understanding and thank you for your time and cooperation. Have a great day!

Let me know how it goes! Thank you for being part of the Microsoft Community.

Sincerely,

Microsoft Community Moderator

HI,

I have tried all those things and cannot get it to work. The issue seems to be with the app on my phone as I can send messages from my laptop but this isn't ideal. I am unsure what version I have as my laptop is Windows 10 and then I have my emails on my phone.

There are no number linked with the error message, it reads:

The message has failed to send.

Your message failed to send because your Outlook.com account is suspended. Before you can send this message, you need to verify your Outlook.com account. To do so, tap the verify account button below.

It has this at the bottom:

Remote server returned '533 5.4.0 Your message seems to have triggered our junk email filters. Could you edit your message and try again?'

Hello Fawn and Flourish,

Good day! Thank you for reaching out to the Microsoft Community.

I understand how important it is to ensure your emails are sent successfully, and I appreciate you bringing this issue to our attention. Let’s work together to resolve this.
From your description, it seems that every email you attempt to send results in a "Delivery has failed to these recipients. Please try again later" error, even when sending emails to different addresses, including your own. This indicates that the issue might not be with the recipient's email addresses but possibly with your email account settings or server connectivity.
I’ve come across similar issues in the past and understand how frustrating this can be.

To better understand and investigate your issue,may I get some more detailed information from your side:

1. Will you please share me your Outlook version details? Please follow this article What version of Outlook do I have? - Microsoft Support and follow the steps to check.
2. Are you using Microsoft365 business account(@xxx.onmicrosoft.com/@yourdomain.com) or personal account (which is ended with outlook.com/hotmail.com/live.com/msn.com) or some other 3rd party pop/imap account?

To assist you effectively, I’d recommend we check a few potential causes and solutions step-by-step. Here’s what you can try:

Check Your Internet Connection:
Ensure you have a stable internet connection, as interruptions can cause email delivery failures.

Review the Error Details:
Examine the full error message you received. If it includes specific error codes (e.g., 550, 554), it could provide more insight into why the delivery failed.

Verify Account Settings:

• If you're using Outlook, confirm that your account is configured correctly.
• Check the outgoing mail server (SMTP) settings. Ensure it matches the provider's recommended settings (e.g., server name, port, authentication).

Verify Email Addresses

Double-check the recipient's email addresses for any typos or errors. It's crucial to ensure that the addresses are valid.

Inspect the Outbox

• Open the Outbox folder in Outlook:
• If you see emails stuck there, right-click on them and select Move > Other Folder, then choose Drafts.
• Open the email from Drafts and try sending it again.

Disable Offline Mode

Check if Outlook is in offline mode:

• Go to the Send/Receive tab.
• If "Work Offline" is highlighted, click it to turn it off.
• After disabling offline mode, select Send/Receive All Folders to attempt sending your emails again.

Check for Large Attachments

If your email contains large attachments, it may exceed size limits:

• Open your Outbox and check for emails with attachments larger than 5MB.
• Remove or reduce the size of attachments before trying to send again.

Update Your Password

If you've recently changed your email password, update it in Outlook:

• Go to File > Account Settings > Account Settings.
• Select your account, click Change, enter your new password, and finish by selecting Close and Finish.

Repair Outlook

If issues persist, consider repairing Outlook:

• Open Control Panel and select Uninstall a program.
• Find Microsoft Office in the list, click on it, and select Change.
• Choose either Quick Repair or Online Repair based on your needs.

Use Safe Mode

Launch Outlook in Safe Mode to rule out add-in issues:

• Press Windows + R, type outlook.exe /safe, and press Enter.

Disable Add-ins and Restart Outlook: Sometimes, third-party add-ins can interfere with sending emails. Restart Outlook in safe mode by typing outlook.exe /safe in the Windows Run box. Test sending an email in this mode.

Test Your Email Account in Webmail:
Log into your email account via webmail (e.g., Outlook on the web) and try sending an email. If it works there, the issue may be specific to your Outlook desktop app.

Clear Cached Credentials:

• Open the Windows Credential Manager.
• Locate and remove any saved credentials related to your email account.
• Restart Outlook and re-enter your credentials.

Check Email Quota:
Ensure that your mailbox isn’t full. A full mailbox can prevent you from sending emails.

Contact Your Email Provider:
If the above steps don’t work, there could be a temporary issue with the email server. Reach out to your provider’s support team to confirm.

Contact Recipient's Email Admin

If you continue receiving delivery failure messages, contact the recipient through another means (like phone) to inform them that their email system may not be accepting connections from your email system.

Please let me know if any of the steps above resolve your issue. If the problem persists, kindly share the complete error message (excluding any sensitive information), and I’d be happy to assist further.

Please understand that our initial response may not always resolve the issue immediately. However, with your help and more detailed information, we can work together to find a solution.

Appreciate your patience and understanding and thank you for your time and cooperation. Have a great day!

Let me know how it goes! Thank you for being part of the Microsoft Community.

Sincerely,

Microsoft Community Moderator