I very often want to send emails from gmail with only slight modifications of the body and subject (maybe changing the person's name) to 10 or 20 people (usually customers). I try different subject lines too and other little differences to spark discussions with customers. Is there some way that I can automate this? Copying and pasting subjects, bodies and emails along with the slight modifications is tedious and time consuming.
Is there a plugin to aid with this or an API I can write my own plugin with easily? I don't do this that often YET where I want to spend the time to write a full fledged emailing application for this purpose and I want everything done through gmail so I can easily see the threads and have a better chance of email delivery with a personal feel.