Mail Capacity and Limitations:
Office 365 does have some capacity limitations. The limits are extreme and most users will never run up against them. But just in case, here they are:
|Mailbox Capacity: 25 GB
This is the total capacity of everything in your Office 365 mailbox. When capacity reaches 24.75 GB of storage, you will not be able to send mail.
|Message Size: 25MB
The maximum total size of an e-mail message, including the header, body, and any file attachments.
|File Attachments: 125 attachments
The maximum number of file attachments allowed in a single email message, even if all attachments do not exceed the message size limit.
|Subject Length: 255 characters
This is the maximum number of text characters allowed in the subject line of an email message.
|Embedded Message Depth: 30 messages
The maximum number of forwarded email messages that are allowed in an email message.
|Recipient Limits: 500
The maximum number of message recipients allowed in the To:, Cc:, and Bcc: fields.
|Message Rate: 30 messages/minute
The maximum number of email messages that can be sent from an account per minute.
|Recipient Rate: 1,500/day
In a 24-hour period, an account cannot send emails to more than 1,500 different recipients. This applies to messages sent to recipients both inside and outside of the NDUS.
The next O365 Training Tidbit will show you how to check the size of your mailbox and how much space you have available.