Fix Outlook Error Too Many Recipients on Windows 10/11

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Updated onOctober 4, 2023

updated onOctober 4, 2023

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Are you getting anOutlookerror that says there aretoo many recipients? Well, the first thing to know about this error is that it happens when a distribution list is too big, and people who regularly use distribution lists to manage and/or send emails are prone to receiving this error.

The error, which is displayed asError550 Too many invalid recipientsoccurs when you attempt to send a message to multiple users or email addresses, that are no longer valid, fromOutlook, and eventually,the message doesn’t get to the intended recipients.

But what really is the maximum number of recipients you can send messages to at a go usingOutlook? First of all, theOutlookerror too many recipients message isn’t generated byOutlookitself, but comes from yourinternet service provider(ISP), or your corporate mail administrator in the form of a send/receive error.

This is becauseOutlookdoesn’t have a limit on the number of addresses you can send to in one single message or email.

However, your ISP or corporate mail admin can set limits or a combination of limits on the number of emails you can send in an hour or day and the number of recipients for a single email in a bid to protect the mail server from abuse or excessive use.

But this is something you’d then have to check with your ISP or corporate mail admin to avoid getting the error in future messages.

One of the easiest ways of dealing with this error is by first creating a distribution list that has an optimum number of email addresses, though you can find out from your mail admin or ISP about the limits on the number of emails you can send. In this way, you can avoid receiving theOutlookerror too many recipients next time you send multiple emails.

Otherwise, you can try some of the solutions listed below if the error persists.

Fix: Outlook error too many recipients

1. Make a new profile and account on Outlook

Note:Making a new profile should not damage thePST file.

If creating a newOutlookprofile or account doesn’t fix theOutlookerror too many recipients, make a new test Windows User Profile (account) by logging into the new Windows account, set upOutlookand test it again.

2. Check with your ISP

If you getOutlookerror too many recipients, there could be an email reputation issue and your ISP probably doesn’t want to admit it.

In this case, check your ISP’s domain reputation, block reputation, and your assigned address reputation from sites like spamhaus.org, spamcop.net, abuseat.org, or barracudacentral.org.

If this turns out to be the probable cause of the error, then it may be affecting many other customers of the same ISP. You can also get the manager’s outgoing mail routing through smtp2go.com.

3. Work with or around the email limitations

To do this, there are several methods that come in handy including:

Did any of these solutions help? Let us know in the comments section below.

Fix Outlook Error Too Many Recipients on Windows 10/11#

Fix: Outlook error too many recipients#

1. Make a new profile and account on Outlook#

2. Check with your ISP#

3. Work with or around the email limitations#

Fix Outlook Error Too Many Recipients on Windows 10/11

Fix: Outlook error too many recipients

1. Make a new profile and account on Outlook

2. Check with your ISP

3. Work with or around the email limitations