Outlook 2016 for Mac, Outlook for Mac for Office 365; In this article. Original KB number: 2800895. We do not recommend that you change the default location of your Profile folder for Microsoft Outlook 2016 for Mac, or your Identity folder for Microsoft Outlook for Mac 2011 to an external hard disk or to a network. Aug 12, 2016 If you prefer to browse for the hidden attachments, you can use MFCMapi to view the attachment property of the appointments and delete attachments you may find. Note that these instructions and screenshots were taken from the 2015 version of MFCMAPI and the steps may vary slightly in the other recent versions. When sending an email attachment in Outlook, you may receive an error message warning you that the attachment size exceeds the allowable limit. When your mail server allows messages up to 25 MB and your attachment is slightly over the default 20 MB limit, change Outlook's default to match the mail server's default size.

Mail User Guide

You can include photos, documents, and more when you write messages.

When you attach images or PDF documents, you can mark them up in Mail before you send your message.

Include photos and other files in emails

In the Mail app on your Mac, do any of the following in a message you’re writing:

• Click the Attach button in the toolbar, locate a file, select it, then click Choose File.

  You can also drag files from the desktop, the Finder, or an app into your message.

• For photos, click the Photo Browser button in the toolbar, then drag a photo into your message. You can also take a photo or scan documents, or add a sketch, using your nearby iPhone or iPad.

By default, Mail inserts images at their actual size. If different sizes are available, you can choose one from the pop-up menu located on the right side of the message header.

Send large email attachments using Mail Drop

You can use Mail Drop to send files that exceed the maximum size allowed by your email account provider. Mail Drop uploads large attachments to iCloud, where they’re encrypted and stored for up to 30 days.

• If you have an iCloud account and you’re signed in to iCloud when you click Send, Mail automatically sends the attachments using Mail Drop. Mail Drop attachments don’t count against your iCloud storage.

• If you don’t have an iCloud account, or if you’re not signed in, Mail asks you whether to use Mail Drop (to always use Mail Drop select “Don’t ask again for this account”).

If a recipient uses Mail in OS X 10.10 or later, the attachments are included in your message. For other recipients, your message includes links for downloading the attachments, and their expiration date.

You can turn Mail Drop on or off for an account. Choose Mail > Preferences, click Accounts, select the account, click Account Information, then select or deselect “Send large attachments with Mail Drop.”

See the Apple Support article Mail Drop limits.

Put email attachments at the end of messages

In the Mail app on your Mac, do one of the following:

• For the current message: Choose Edit > Attachments > Insert Attachments at End.

• For all messages: From the Message viewer, choose Edit > Attachments > Always Insert Attachments at End of Message (a checkmark shows it’s on).

Include or exclude email attachments in replies

Outlook 365 Attachment Size Limit

In the Mail app on your Mac, do one of the following:

• Include or exclude original attachments in a reply: In the toolbar of the message window, click the Include Attachment button or the Exclude Attachment button .

• Include or exclude original attachments in all replies: From the Message viewer, choose Edit > Attachments > Include Original Attachments in Reply (a checkmark shows it’s on). To turn it off and exclude attachments, choose the command again (the checkmark is removed).

Send email attachments to Windows users

In the Mail app on your Mac, try these suggestions:

• Send Windows-friendly attachments. To do so for all messages, choose Edit > Attachments, then select Always Send Windows-Friendly Attachments. For a specific message, click the Attach button in the toolbar of the new message window, then select Send Windows-Friendly Attachments (if you don’t see the checkbox, click Options near the bottom).

• Send documents as PDFs instead of in their original format.

• Use filename extensions (such as .docx for a Microsoft Word document).

• If the recipient sees two attachments (such as “MyFile” and “._MyFile”), the recipient can ignore the file with the underscore (such as “._MyFile”).

To display an attachment (such as a one-page PDF document or an image) as an icon, Control-click the attachment in your message, then choose View as Icon. To show the attachment again, Control-click it, then choose View in Place.

If the message size shown on the left side of the message header is red, the attachments are causing your message to exceed size limits set by your email account provider. Try reducing the number or size of attachments or use Mail Drop.

Outlook For Mac 2016 Attachment Size Limit On Iphone

Have you ever faced a scenario where you are sending an attachment in Outlook, and you get an error notification saying that your attachment is too big in size to process? If yes, then this blog is going to help you with this. We are going to discuss how you can send a large-sized attachment with Outlook without getting an error.

First, you need to know that it is a size issue. So, if you have attached something too large, you get an error notification saying, “Attachment size exceeds the allowable limit.” This problem arises not only when you have added a single large attachment, but also when you have added many attachments with a total size of more than 20 MB (20480 KB). 20 MB is the size limit of a message for webmail email accounts. You will be happy to know that even though the size limit for web mail email accounts is 20 MB, the server allows up to 25 MB. So, when we know that the server allows up to 25 MB, this means that there is something we can do to increase the size of the attachment in this case. Let’s learn how the limit for attachment size can be increased.

Step 1- Start with pressing Win + R keys.
Step 2- Type regedit in the box there and click on Ok.
Step 3- Now follow the below-mentioned steps to navigate as per your Outlook versions:

• “HKEY_CURRENT_USER¬Software¬Microsoft¬Office¬14.0¬Outlook¬Preferences” for Outlook 2010
• “HKEY_CURRENT_USER­Software­Microsoft­Office­15.0­Outlook­Preferences” For Outlook 2013
• “HKEY_CURRENT_USER­Software­Microsoft­Office­16.0­Outlook­Preferences” for Outlook 2016 (REFER THE SCREENSHOT)

Step 4- In the Registry Editor Window look for the list that opens after navigating. There you will find an option in the list “MaximumAttachmentSize” double click on that.

Note: If you do not find MaximumAttachmentSize in the list, then right-click on the empty space in the Registry Editor, click on New and then click on DWORD (32-bit) Value. (See the image below)

Microsoft Outlook Attachment Size Limit

Step 5- A new dialogue box will open, where you can enter the desired attachment size in KBs. So, here we are doing it 25 MB, this is how much server allows. Enter 25000 in Value Data section. Click on Ok to proceed.

Step 6- Close the Registry Editor and try to send the email with attachment again.

What is the Maximum size for your Email Provider?

Well, knowing the correct limit for the attachment size of your email provider will surely make your job easier. Gmail provides 25 MB limit for attachment size, Google Apps has 20 MB, Yahoo Mail has 25 MB, and AOL Mail has 25.

What else do you require to tackle all issues with your Attachments?

We all know that how important attachments are of while communicating through emails and any issue arising with them is the utmost priority to work on. We are not always capable of dealing with the technical glitches keep on arising every now and then, specially delay in opening Outlook attachments. In this case, it is better to go for a third-party tool which can ultimately solve all your attachment issues. Kernel for Attachment Management is a tool designed keeping in mind every minute details about the attachments and problems that may occur to them. This tool can recover email attachments in no time and can efficiently compress large PST files to save the space. The tool has many exciting features and can run multiple customization rules to extract.

More Information