In Exchange Server and Exchange Online (Microsoft 365), you can enable email forwarding at the mailbox level (configured by the administrator using the ForwardingAddress attribute), through mailbox Inbox rules, or…

There was a task to organize mailings in accordance with the list of user e-mails in an Excel spreadsheet. Each e-mail message should contain some data specific to each user…

Plus addressing (sometimes called subaddressing) allows you to use unique dynamic SMTP e-mail addresses for your mailbox. It is typically used to protect against spam, track marketing companies, and categorize…

In some cases, Outlook clients may stop updating the Exchange Global or Offline Address Book with the error “Outlook cannot update Global Address Book 0x80200049” or 0x80070057. You can add…

In on-premises Exchange Server and Microsoft 365 (Exchange Online), you can grant users permission to send e-mails on behalf of another user or mailbox. In this article, we will show…

Modern versions of Outlook (starting with Outlook 2016) don’t allow you to manually configure a connection to a mailbox hosted on Exchange Server or Exchange Online (Microsoft 365). Microsoft developers…

The attachment file preview suddenly stopped working in my desktop Outlook app. When selecting an attachment file (PDF, XLSX or DOCX), an error appears in the Outlook preview window:

In legacy Windows versions (Windows 7/XP or Windows Server 2008R2/2003) with Outlook 2010/2013/2016/2019, you may see the following error when trying to connect to a mail server:

An automatic reply feature (Auto-Reply, Out of Office Message/OOF) allows an Exchange user to configure a rule in their mailbox to automatically send a specific message in reply to all…

In different versions of Outlook (2019/2016/2013/Microsoft 365 Apps), a bug occurs periodically when the create signature button stops working. When the user clicks the Signature button in the Outlook settings,…