For starters, Feedburner is a Google service that allows delivery of latest blog or website articles in the form of an email. Blog or website users can enter their email address and receive latest updates in their email inbox. Now you can customize the subject line or title of that email address and even show latest post title as the title of email sent out by Feedburner to your readers.
Insert latest post title in Feedburner email title
1. Login into your Feedburner account & click specific feed listing.
2. Goto Publicize > Email Subscriptions > Email Branding
3. Change the title as listed in box next to “Email Subject/Title”. To show latest post add tag ${latestItemTitle}
For example: TechF5 – ${latestItemTitle} will show text TechF5 followed by latest post title in your Feedburner subscriber email. [source]