Exchange how many emails sent

This topic provides guidance to help you answer these questions and to apply the appropriate message size limits in the appropriate locations. The following list describes the basic types of message size limits, and the message components that they apply to.

Whole message size limits : Specifies the maximum size of a message, which includes the message header, the message body, and any attachments. Exchange uses the custom X-MS-Exchange-Organization-OriginalSize: message header to record the original size of the message as it enters the Exchange organization. Whenever the message size is checked, the lower value of the current message size or the original message size header is used. The size of the message can change because of content conversion, encoding, and transport agent processing.

For any message size limit, you need to set a value that's larger than the actual size you want enforced. This accounts for the Base64 encoding of attachments and other binary data. For example, if you specify a maximum message size value of 64 MB, you can expect a realistic maximum message size of approximately 48 MB. Attachment size limits : Specifies the maximum size of a single attachment in a message.

The message might contain many smaller attachments that greatly increase its overall size. However, the attachment size limit applies only to the size of an individual attachment.

While you can't limit the number of attachments on a message, you can use the maximum message size limit to control the maximum total of attachments on the message. Recipient limits : Specifies the total number of recipients that are allowed in a message. This includes the total number of recipients in the To: , Cc: , and Bcc: fields.

A distribution group counts as a single recipient. Message header size limits : Specifies the maximum size of all message header fields in a message. The size of the message body or attachments isn't considered. Because the header fields are plain text, the size of the header is determined by the number of characters in each header field and by the total number of header fields.

Each text character consumes 1 byte. The following tables show the message limits at the Organization, Connector, Server, and Mailbox levels, including information about how to configure the limits in the Exchange admin center EAC or the Exchange Management Shell.

Organizational limits apply to all Exchange servers, Exchange servers, Exchange Mailbox servers, and Exchange Hub Transport servers that exist in your organization. On Edge Transport servers, any organizational limits that you configure are applied to the local server. Organizational limits also apply to external senders and external recipients anonymous or unauthenticated senders or recipients :.

For inbound messages from external senders, Exchange applies the organizational maximum send message size limit the maximum receive message size limit as described in the Recipient limits section is applied to the internal recipient. To get top mail senders report,. The given example retrieves top mail senders and their mail count for the last 90 days. To view top senders for the custom period, you can use —StartDate and EndDate params.

To list top mail recipients report,. This example shows the top mail recipient statistics between June 10, , and June 20, To view top spam recipients,. To display the top malware recipient report,.

To get Office top malware report,. Column C1 is the malware name and C2 the number of appearances. Most admins prefer message tracking to monitor email flow.

With message tracing, admins can get complete information of the sent, received, purged, and deleted message. The information includes,. To get a message tracking report, run the below cmdlet.

By default, the cmdlet retrieves past 48 hours of data. The below example retrieves message trace information for messages sent by a specific user between the custom period.

If you want to filter the message trace details, you can send the output to grid view. Character limit for all regular expressions used in all transport rules : The total number of characters used including all the regular expressions in all the transport rule conditions and exceptions in the organization. You can have a few rules that use long and complex regular expressions, or you can have many rules that use simple regular expressions.

Scanning limits for attachment content : The transport rule conditions let you examine the content of message attachments, but only the first 1 MB of the text extracted from an attachment is inspected. This 1 MB limit refers to the text extracted from the attachment, not to the file size of the attachment. For example, a 2 MB file may contain less than 1 MB of text, so all of the text would be inspected. Maximum number of recipients added to a message by all transport rules : When a message is acted on by different transport rules, only a finite number of recipients can be added to the message.

After the limit is reached, any remaining recipients aren't added to the message. Also, distribution groups can't be added to a message by a transport rule. Forwardee limit : The maximum number of recipients that can be configured for an inbox or transport rule with a redirecting action. If a rule is configured to redirect a message to more than this number of recipients, the rule won't be applied and any message that satisfies the rule condition won't be redirected to any of the recipients listed in the rule.

Number of times a message is redirected : The number of times a message will be redirected, forwarded, or replied to automatically based on Inbox rules. User B has an Inbox rule that forwards messages to User C based on keywords in the subject line. If a message satisfies both of these conditions, the message is only sent to User B; it's not forwarded to User C because only one redirection is allowed. In this case, the message is dropped without sending a non-delivery report NDR to User B indicating that the message wasn't delivered to User C.

This header remains also across Exchange organizational boundaries. Number of times a message is redirected by transport rules : The number of times a message will be redirected based on transport rules. For example, Exchange organization Tailspin Toys has a transport rule to redirect every message that was sent to User A to User B, which is located in Exchange organization Contoso. Within Exchange organization Contoso, there is a transport rule in place to redirect every message that was sent to User B to User C, which is located in Exchange organization A.

Datum Corporation. In this case, the message is dropped and a non-delivery report NDR with status code and reject message 5. RejectMessage; Transport rules loop count exceeded and message rejected is sent to User A. We make use of the X-MS-Exchange-Transport-Rules-Loop header to determine the number of times that a message was redirected by transport rules.

If that is the case, the inbox rule value can be increased. For instructions, see Modify the space used by Inbox rules in Exchange Online. These limits control the moderation settings that are used for message approval applied to distribution groups and transport rules.

Maximum size of the arbitration mailbox : If the arbitration mailbox exceeds this limit, messages that require moderation are returned to the sender in a non-delivery report NDR. Maximum number of moderators : The maximum number of moderators that you can assign to a single moderated distribution group or that can be added to a message using a single transport rule. Note that you can't specify a distribution group as a moderator. Expiration for messages waiting for moderation : By default, a message waiting for moderation expires after two days, and admins cannot extend this interval.

However, the processing of expired moderated messages runs every seven days. This means that a moderated message can expire at any time between two and nine days. Maximum rate for expired moderation notification messages : This limit sets the maximum number of notification messages for expired moderated messages in a one-hour period.

This limit is placed on each mailbox database in the datacenter. During periods of heavy usage, some senders may not receive notification messages for moderated messages that have expired.

However, these notifications are still discoverable using delivery reports. The following limits apply to Microsoft Exchange ActiveSync, a client protocol that synchronizes mailbox data between mobile devices and Exchange. Exchange ActiveSync device deletion limit : The maximum number of Exchange ActiveSync devices that an Exchange administrator can delete in a single month. Feedback will be sent to Microsoft: By pressing the submit button, your feedback will be used to improve Microsoft products and services.

Privacy policy. Skip to main content. This browser is no longer supported. Download Microsoft Edge More info. Contents Exit focus mode. Note If you need assistance with a task or if you are troubleshooting a problem, you might find the following articles helpful: Email for help creating and sending email Email in Microsoft for business - Admin Help Fix Outlook and Microsoft problems with Microsoft Support and Recovery Assistant Email non-delivery reports Exchange Online Help.

Important The limits applied to a Microsoft organization may differ depending on how long the organization has been enrolled in the service. When a limit is changed in the Microsoft data centers, it can take some time to apply the change to all existing customers. You can't modify most of these limits, but you and your users should be aware of them. These limits apply to both internal and external recipients.

For information about Office group limits, see "How do I manage my groups? Note A maximum of 20 address lists can be assigned to a single offline address book OAB. Note Using journaling, transport rules, or auto-forwarding rules to copy messages to an Exchange Online mailbox for the purposes of archiving is not permitted.

Note 1 Each user initially receives GB of storage in the archive mailbox. Note 1 This is the default mailbox size for Exchange Server organizations. Note 1 This is the default value for Exchange Server organizations. Note 1 This is the storage quota for the Recoverable Items folder, not the quota for the entire archive mailbox. Note 1 Microsoft recommends no more than 1,, messages per mailbox folder. Note Some email clients may have lower message size limits or may limit the size of an individual file attachment to a value that is less than the Exchange Online message size limit.

Note This is the maximum file size of a single attachment. Note 1 The default maximum message size for Microsoft mailboxes is 25 MB. Note For distribution groups stored in an organization's address book, the group is counted as one recipient. Yes, if User A sends an email to a DL with 30 users in it, that should count as 30 emails. For a list of available and unavailable reporting cmdlets, see Exchange reporting cmdlets.

See Also : Office , Databases Show details. If you run a message trace for items that are older than 7 days, when you click Search a message should appear letting you know that the message was successfully submitted, and that an email notification will be sent to the supplied email address when the trace has completed.

If the. Message throttling refers to a group of limits that are set on the number of messages and connections that can be processed by an Exchange server. These limits work together to protect an Exchange server from being overwhelmed by accepting and delivering messages.

I need to know on average how many emails one specific exchange mailbox receives per month. I can start counting from now, but I was wondering if there is an easy way to get these statistics. Under Email troubleshooting, click Troubleshoot message delivery. Run a message trace and view delivery details of messages sent in the last week. By default, message trace is set to search for all messages sent or received by your organization in the past 48 hours. But, how about counting emails from two or more senders?

Please view below solution: 1. Thanks in advance. Click Sent Items in the folder list. Select the message you want to view. You can search email quickly by using the. See Also : Support Number Show details. If you recently created a new Outlook.

On the General tab, select Received as the field and Today as the Condition. If you need to search other periods, create the filter on the Advanced tab. Return to Outlook. To get the message count you can either look at the status bar or set the folder properties to show the total count.

After you set up email in Outlook for Android or Outlook for iOS, you can customize the mobile app to stay connected the way you want.

Click on the handy tips below to learn how to optimize Outlook for your mobile device.