I am a bit indecisive about what plan I should upgrade to. 

I need more info on the plans and how they work. 

Since I am using the free plan which allows up to 2000 subscribers and 12 000 emails/month, does this mean that if, lets say, I  have 3000 subscribers and want to send them an email campaign, depending on the chosen plan, I will pay: 

1. monthly plan: $45 per month or

2. pay-as-you-use plan: $80?

Can't I use the 2000 subscribers the free plan offers me, and pay for the difference? For example, to pay for the extra 1000 subscribers I want to contact?

I need to clear this up since the price depends on this. 

Thanks in advance, 

Ivana