In this article, we will demonstrate how you can increase the Attachment Size Limit in Outlook by editing the Registry, which is 25MB by default.

You can use Outlook.com email to send single files up to 10GB or hundreds of smaller ones in one email using OneDrive very easily.

Increase attachment size limit on Outlook by adjusting registry settings or using cloud storage options. Send larger files easily without hitting size restrictions.

Pressing "Reply" in Microsoft Outlook does not automatically transfer the attachments from the original email to the new message. However, you don't need to manually reattach the omitted files ...