Send a message to all mailboxes over a certain size

Question:
I know that I can spot mailboxes over a certain size using the Mailbox Storage Information report template, but it will not let me send a message to each concerned individual.

Answer:
You can easily achieve this through Mailbox Storage Information by selecting these options.

Selection tab: Select All organization mailboxes;
Filter tab: Define your size criteria, for example Item size (MB) Is greater than 512;

Filter mailboxes over 512 MB

Content tab: Select the Mailbox storage (item size and count) option;
Individual reports tab: Select the Send individual report option, Send to: Email address, and the file format of the attached report - for example, Portable Doc Format (Pdf). You can create a custom message template if you wish to deliver a specific information to the concerned users.

Send individual reports to the selected mailboxes

Output tab: You may wish to receive the complete report as a PDF or a CSV file by email; then select 'Email recipient' as Destination and enter your SMTP address.

All mailboxes whose size is over 512 MB will receive a message with an individual excerpt of the report as a Pdf attachment, while you will yourself receive the entire list of those mailboxes.