I'm having issue sending emails

You guys may want to check this link below. I was having the same issue sending emails. It may be related to the DNS records.

https://dev.to/rpalo/fixing-a-dns-issue-that-makes-your-emails-look-like-spam-4hga

If you own a web host/email host then whitelisting jotform IPs and domains will do, please check this guide: https://www.jotform.com/help/145-Whitelisting-JotForm-IP-Addresses-and-Domains

Are you not receiving email using your SMTP? Could you please further explain the issue you're experiencing so we can further investigate this?