Delay in form submissions

Since last week we've noticed a severe lag in jotform submissions. It's been taking up to several hours for submissions to hit our gmail account, whereas if we look on jotform we can see the submission.

We are experiencing a delay issue on email notifications which have recipient emails like gmail or hotmail. This is already reported to our DevOps team and it should be resolved anytime soon. Please use your   SMTP settings.

If you do not have a custom domain, then your can configure GMAIL as the sender email to resolve the issue. Here is how: How to Use Your Gmail Account as Your Email Sender via SMTP