I use SendGrid and Google Cloud (GAE) to send email. This API is a layer on top these 2 email services. This layer avoids unintentionally flooding your users wi

I use SendGrid and Google Cloud (GAE) to send email. This API is a layer on top these 2 email services. This layer avoids unintentionally flooding your users with email. e.g: If your cron job uses SendGrid to send email, and you run that cron job 2 times by mistake, SendGrid will send 2 emails for each user. Instead, if your cron job uses my API to send email and you run that cron job 2 times, my API will send only 1 email for each user per day. Does that make sense?