Email Marketing Efficiency
To see reports on the size of your mailing list and conversion, go to the **Reports [1.1.] > Email marketing efficiency [1.2.]** page.
Here you can see the number of those **opportunity cards that are in the Marketing and Lost status groups and there is an active email address on them**. Those people's cards can be found in these status groups who you target only by sending emails.
Here you can see the number of opportunity cards that were **transferred from the Marketing and Lost status groups to Opportunities or Won groups** during the period that you examine.
**Example:** If you have a mailing list containing 1000 email addresses (in the Marketing and Lost status groups) from which 50 cards were transferred to the Opportunities status group (became leads), the conversion is 5%.