You can send and track emails with Marketo directly from Outlook.
If you haven't yet, install the Marketo email add-in for Outlook.
1. Open Microsoft Outlook and create a new email.
If you include multiple recipients in the email, all activity will be tracked under the first recipient.
2. Compose your email as you normally would, then click Send and Track.
If you send an email to someone who doesn't exist in your Marketo instance, a Person Record will automatically be created for them. Their last name will always be 'mktUnknown' so that you can easily find them.
If you want to use a Marketo template, see Send and Track from Outlook Using a Template.
3. Take a look at the preview and click Send.
Anti-spam technology often rejects opens and clicks that happen within 20 seconds of sending the email, so please wait at least that long to open/click while testing.
In order to see who has received your emails sent through Outlook, create a smart list using the "Was Sent Sales Email" filter.