How do I get the features of the Sandbox Solution without deploying the solution?

If due to restrictions (e.g. organization policy) you can't activate Sandbox Solution, you can get the same functionality by performing the following steps:

Create the email columns

These columns must be created with the name (internal names) as they are listed below and can be renamed (display name) once they have been created.

Column Name	Column Type
EmSubject	Single line of text
EmTo	Multiple lines of text
EmToAddress	Multiple lines of text
EmCC	Multiple lines of text
EmBCC	Multiple lines of text
EmFrom	Single line of text
EmFromName	Single line of text
EmDateSent	Date and Time
EmDateReceived	Date and Time
EmType	Single line of text
EmDate	Date and Time
EmID	Single line of text
EmAttachCount	Single line of text
EmAttachmentNames	Multiple lines of text
EmCon	Single line of text
EmConversationID	Multiple lines of text
EmConversationIndex	Multiple lines of text
EmCategory	Single line of text
EmBody	Multiple lines of text
EmSensitivity	Number
EmImportance	Number
EmToSMTPAddress	Multiple lines of text
EmCCSMTPAddress	Multiple lines of text
EmBCCSMTPAddress	Multiple lines of text
EmFromSMTPAddress	Multiple lines of text
EmHasAttachments	Yes/No
EmSentOnBehalfOfName	Single line of text
EmReceivedOnBehalfOfName	Single line of text
EmCompanies	Single line of text
EmRetentionPolicyName	Single line of text
EmReplyRecipientNames	Single line of text
EmReplyRecipients	Single line of text
The columns below will capture the original created and modified dates when saving from a network drive to SharePoint
DocCreatedSaved	Date/Time
DocModifiedSaved	Date/Time

Create OnePlaceMail Email Content Type