You reply to an email from the Outlook mobile app on your iPhone or Android phone, and when the recipient opens your reply on a desktop, they see extra blank lines, spaces, or paragraphs that you did not insert. This formatting problem usually occurs because the mobile app and the desktop client handle line breaks … Read more
When you open a conversation thread in Outlook, the program automatically expands every message in that thread. This behavior can clutter your reading pane and make it difficult to find the most recent reply. The auto-expand feature is controlled by a single toggle in Outlook’s reading pane settings. This article explains how to disable auto-expand … Read more
Outlook Conversation View groups related emails into a single thread. When messages from the same conversation appear in separate threads, the feature is not functioning correctly. This split-thread problem makes it hard to follow email discussions. The cause is usually a mismatch between the subject line, the sender’s address, or the message ID. This article … Read more
You double-click an attachment in Outlook, it downloads to your computer, but then nothing opens. Or you see an error message saying Windows cannot open the file. This problem happens when the file association for the attachment type is missing or broken on your Windows system. It can also occur if Outlook is running in … Read more
You click an attached Word document or Excel spreadsheet in Outlook, but the preview pane shows a blank area, an error message, or the message “This file cannot be previewed.” This happens even though the file opens correctly when you double-click it. The root cause is usually a broken or disabled preview handler in Windows, … Read more
Sensitivity labels from Microsoft Purview let you classify and protect email content directly in Outlook. These labels apply encryption, watermarking, and header markings to prevent data leaks. You might need to apply a label because your organization requires it for compliance or because you want to control who can read or forward an email. This … Read more
When you send an email in Outlook, recipients cannot always verify that the message came from you and has not been altered. S/MIME (Secure/Multipurpose Internet Mail Extensions) solves this by letting you digitally sign your emails using a personal certificate. Without a properly installed certificate, Outlook cannot apply the signature. This article explains what an … Read more
You need to send sensitive information such as financial data, legal documents, or personal health details through email. Outlook includes a built-in feature called Office Message Encryption or OME that protects your message content from unauthorized access. This article explains what OME does and the exact steps to encrypt an email in Outlook for Windows, … Read more
When an email is forwarded, standard email authentication methods like SPF, DKIM, and DMARC often break because the forwarding server changes the message envelope or headers. This can cause legitimate forwarded messages to be flagged as spam or rejected outright. ARC (Authenticated Received Chain) is an email authentication standard that preserves the original authentication results … Read more
BIMI, short for Brand Indicators for Message Identification, displays your verified brand logo next to your email in recipients’ inboxes. This feature helps your emails stand out and builds trust by confirming your domain’s authenticity. To show your logo, you must meet specific technical requirements and configure DNS records correctly. This article explains what BIMI … Read more