I am just trying out the brand-new Send Test feature and it could end up being a nice time-saving feature. Part of the time-saving aspect is that this feature allows me to skip creating two separate campaigns... one for my TEST and one for my intended customer audience. I can test from the very same campaign I will send to my intended audience.
What's missing for me: We use a Subject Line nomenclature for our TEST emails, though, and I'm wondering, if this could be a third field in the new Send Test section. We enter our email addresses (or select contact lists) to send the TEST to, and then in a separate "test subject line" field, we can customize the subject line for the TEST email, which would differ from the real subject line that will be used for the intended audience. OR, I guess you could have TEST emails send with "TEST" in the subject line automatically, but I think I would prefer that I control how that is handled, because if we end up sending out a second or third test, I would want that to be evident in our subject line nomenclature, and I don't suspect an automated solution would be able to do that.
Please also add this same custom subject line for TEST emails to the A/B Campaign, as well.