What is JotForm?
JotForm is a free online form builder which helps you create online forms without writing a single line of code. No sign-up required.

At JotForm, we want to make sure that you’re getting the online form builder help that you need. Our friendly customer support team is available 24/7.

We believe that if one user has a question, there could be more users who may have the same question. This is why many of our support forum threads are public and available to be searched and viewed. If you’d like help immediately, feel free to search for a similar question, or submit your question or concern.

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    Email is getting blocked every few hours

    Asked by dfinkelstein on January 18, 2017 at 07:29 PM

    Our email (sales@instantcard.net) is making it to your bounce list every few others now.  


    It has been working great for almost 2 years, but for the last few months it started happening sporadically and has since increased on much faster intervals.  I am now having to remove the email twice a day from your bounce list.

    I have looked over your documentation and I cannot see what the problem is.  All emails to us(and customers) come from the noreply@jotform.com email (not ours).  Please provide steps to get this resolved so we can keep our business flow going as normal.

    This is getting pretty infuriating and we need to get this resolved ASAP.

    Thanks much,


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    JotForm Support

    Answered by Kevin_G on January 18, 2017 at 09:45 PM

    What I would suggest you is to add (or ask your email provider to add) our mail server domain list: 


















    This should help you with the bouncing problem, the following guide will help you to avoid bouncing problems as well: How-to-Prevent-Email-Bouncing-Related-Issues

    Also, a good way to avoid emails being blocked due to any security filter and also have more control over how the emails are sent is by setting up your custom sender email using the SMTP method, you should ask your email provider for this info and then follow this guide: How-to-Setup-SMTP-for-a-Form

    Hope this helps.