In your pricing chart, what is the difference between Submissions and Total Submissions Storage? TY

Thanks for contacting us. Submissions refer to the amount of submission you are allowed to receive per month, and the Total Submission Storage refers to the number of submissions you can have saved on our Database. With the starter plan, you are allowed to receive up to 100 submissions per month and 500 submissions saved (if you received 100 submissions per month you will reach the total submissions storage in 5 months). 

For more about account limits, please refer to his guide.- Understanding-Your-Account-Usage-and-Limits 

Let us know should you have more questions.