> I used gmail to send a few emails for customer research purpose. By a few do you mean 20/month or 20,000/month? I'd really have to suspect the later. It is i

> I used gmail to send a few emails for customer research purpose. By a few do you mean 20/month or 20,000/month? I'd really have to suspect the later. It is interesting that it seems to be content specific. Are the recipients also gmail users or are non-gmail address also affected?