Why did I not receive submissions?

I did not receive the following submissions: MC12807 & MC12808 in my email.  Saw them on the submission report but did not receive via email but other parties received.  

Does the submitter need to have their Jotform reconfigure via our IT Department, thanks.

Check your spam/junkmail folder to ensure they were not filtered there.  If they were, mark them as "Not spam" or your email providers equivalent.  If the emails were received by others in the recipient list, the emails did trigger.  The likely reason why they would be missing from only one address would be filtering. 

Wasn’t in SPAM. But what is filtering, thanks.
Thanks,
Kendall Degraphenreed
Event Coordinator, Managed Care
Davis Vision
175 East Houston Street | San Antonio, TX 78205
Mobile: 210-842-7620
kdegraphenreed@davisvision.com | www.davisvision.com
...

Filtering is any sort of redirection of emails.  This can be anything from emails being blocked due to content, redirected to another folder such as spam/junkmail, anything of that nature. 

I investigated further and it does look like we were having issues with sending emails earlier that may have caused those specific submissions not to trigger emails.  We switched to an alternate sender to resolve the issue.  You will notice that with MC12810 the sender email was noreply@jotforminc.com and then a few submissions later the sender email resumed as noreply@jotform.com.  It does look like the sender issue for MC12807, MC12808, MC12809 was on our end but has since been resolved.  

If you need copies of that data forwarded to your email, you can do so through the submission page:

https://www.jotform.com/help/269-How-to-view-Submissions