How to delete mailbox items on Exchange Online / 2019 / 2016 / 2013 / 2010

[Update]: This blog post was originally posted on November 28, 2016. It has been updated to reflect changes to Search-Mailbox cmdlet introduced in Exchange Online.

Applies to: Exchange Online, Exchange 2019, Exchange 2016, Exchange 2013, Exchange 2010

In this article, I am going to show you how to use the Search-Mailbox PowerShell cmdlet together with the -DeleteContent switch to delete email (and other item types) from multiple mailboxes on Microsoft Exchange Online, as well as on-premises Exchange.

Delete Exchange mailbox content with Search-Mailbox
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How to merge Office 365 tenants – migrate to another Microsoft 365 organization

Merging Office 365 (Microsoft 365)* tenants is about migrating mailboxes from one or more tenants to another. In other words, it’s a tenant-to-tenant migration, but the context is that the target tenant is already inhabited. This article explains how to merge Office 365 tenants in the easiest way.

*While the article is about how to merge Office 365 tenants, a quick foreword is in order. It’s been almost two years since Office 365 was renamed to Microsoft 365. After all this time, both names are used but, in most cases, people seem to prefer the shorter version – Office 365. That’s why throughout the article, I’ll use Office 365 (referring to Microsoft 365 at the same time) to make things more concise.

How to merge Office 365 tenants
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Roles and permissions required to migrate to Microsoft 365

Mailbox migration is a complex process which requires technical skills and knowledge of both the source and the target environment. One of the questions that comes up while planning the migration is roles and permissions required to successfully execute the migration. You could drop the subject by simply stating “get global admin if it’s Microsoft 365 (Office 365) and Organization Management role when on-premises”. However, your company might have a strict policy to follow the principle of least privilege. That’s when knowing the exact required permissions comes in handy.

Roles needed for Microsoft 365 migration
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How to enable and use plus addressing in Exchange Online

Update: This post was updated on April 14, 2022, as it is now possible to enable the Plus Addressing feature in the Exchange admin center (EAC).

Listening to the users’ voices, Exchange Team finally deployed the Plus Addressing feature (aka subaddresing or Dynamic ‘+’ Email Aliases) in Exchange Online in October 2020. The feature was literally won over by Exchange admins, getting 6589 votes on UserVoice (back when UserVoice was still used to collect feedback) and becoming the top requested one at the same time.

Plus addressing explained with examples of use
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Email migration from GoDaddy to Microsoft 365 made easy with CodeTwo

GoDaddy is quite a recognizable brand dealing with web services. The company titles itself the world’s #1 domain registrar but there is a lot more to GoDaddy than domain registration, e.g.: website hosting & design, online stores, SSL certificates and (the focus of this article) email hosting. We’ve recently observed a rising interest in the last area, specifically, migration from GoDaddy to Microsoft 365 (Office 365).

Migrate GoDaddy to Microsoft 365
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