In most cases, subscribers won't expect to find your email in the Primary
tab. Your goal is to have your emails delivered to the tab where subscribers
expect to find them (not necessarily where you want them!).
Emails in the Primary tab may get more attention, but it's likely to be negative
attention in the form of opt-outs and spam complaints.
Send a copy of your email to the address below and
within seconds we'll show you where your users will read it.