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Outlook, the popular email client developed by Microsoft, allows users to send and receive emails efficiently. When it comes to sending attachments or files through Outlook, there are certain limitations in terms of file size that users need to be aware of. These limitations are in place to ensure smooth email transmission and prevent overload on email servers.

In general, the maximum attachment size that can be sent via Outlook varies depending on the version and configuration of the application, as well as the email service provider being used. However, the following guidelines can provide a general understanding of the file size limitations:

1. Outlook Desktop Application: In the desktop version of Outlook, such as Outlook 2019, Outlook 2016, or earlier versions, the maximum attachment size is typically limited to 20 megabytes (MB). This means that you can attach and send files up to 20 MB in size per email.

2. Outlook Web App (OWA): When using the web-based version of Outlook, known as Outlook Web App or Outlook on the web, the maximum attachment size is usually larger compared to the desktop application. OWA often allows attachments up to 25 MB or even 35 MB, depending on the email service provider.

It is important to note that these size limitations refer specifically to the attachment itself and do not include the size of the email message or any additional content within it. Therefore, it is crucial to consider the overall size of the email, including both the attachment and the message body, to avoid exceeding the email size limits imposed by the recipient’s email server.

Exceeding the maximum attachment size limit set by Outlook or the recipient’s email server may lead to various issues. For instance, the email might fail to send, or it may bounce back to the sender with an error message indicating that the attachment is too large. Additionally, large attachments can consume significant bandwidth and storage space, especially for users with limited internet or mailbox capacities.

To overcome these limitations, there are alternative methods available for sharing large files. One common approach is to utilize cloud storage services, such as OneDrive or Dropbox, to upload the file and then share a download link via email. Another option is to compress the file using file compression software, reducing its size before attaching it to the email.

In conclusion, the maximum attachment size that can be sent in Outlook depends on the version of the application and the email service provider being used. It is essential to be mindful of these limitations to ensure successful email transmission and to explore alternative methods for sharing large files when necessary.