Yes, mailing manager caters the use of custom fields to be used in the subject line of an email.
To do this you must place the correct placeholder for the field in the subject line.
E.G. %%First Name%%.
When the email is then sent, BulkMail will replace the placeholder with the correct information or the default value if they do not have any data for that field.
This is a good way of connecting with your contacts as it gives the email a more personal touch compare to just a simple ‘hello’ in the subject line.