How to get past Akismet when contact form sending???

Hi,
I've been trying to submit 400 daily contact forms on WordPress sites that have Akisment setup. It seems like after XX number of sends, it will show "Message has been sent" but the message still gets blocked and doesn't go through.

At first the IP was blocked, then tried a different IP location via VPN, worked for a bit, later the e-mail used got blocked. Chose a new IP, worked for a while. Then stopped working again..

Anyone that have suggestions? Would be willing to pay for a solution.

Been looking at a few Auto Contact Form Submitters, which sound interesting (if they're working), I'm currently paying someone from Freelancer $15 a day for this but basically just wasting money at this point since the emails aren't going through..

Try using a rotating proxy, or different proxies when posting to the different websites. This would be easier to enforce if you were to use a script/software rather than paying a guy.