Flo Forms Issues

The following article reviews email issues that may occur when using the Flo Forms plugin and how to solve them.

There are a number of reasons why you may not receive emails:

  • Your Server mail function may not be working
  • Server spam filters are blocking your email due to the sender being used in the header
  • Emails are sent to spam

If the solutions for the above items are not working, we suggest using an SMTP plugin to send your emails.

Server Mail function

On occasions its possible that the server you’re using does not have email support.

First we need to check if your server is sending emails at all.

For that you can create a new user using an email you have access to.

Step 1 – Add New User

Go to Users > Add New, and complete the form.

Make sure you check the option that sends password to the user:

Screen Shot 2015-03-13 at 9.06.14 AM

Step 2 – Check Email

Check if  you’ve received via email the credentials for the new user (make sure you check the spam). If you did receive the credentials, then the email is working great!

Review the next section in this article Flothemes – User Email to see if your WordPress mail settings are causing the email to be blocked.


If you didn’t receive any emails, then you need to contact the hosting to see if email support is provided. Ask if the wp_mail() or PHP Mail() function is enabled for the site.

Alternatively you can use an SMTP server to send the emails. Please refer to the SMTP section for further details.

Server Spam Block

There are 2 server side reasons you may not be receiving your clients emails, the mail function is not working with your hosting, or your hosting provider has mail filters blocking any emails being sent.

Most servers will not allow emails to be sent  from your site that appear to be from an email address that does not include your domain.


To bypass that, our plugin has the option to turn off the ‘Reply-To Header’ and it will use the default hosting (or WordPress) email.

To do so, go to your WordPress back end and then to FloForm Settings, then select no for “Enable “Reply-to” email header?”:


Emails sent to spam

Go to your email and check the spam folder. Sometimes the emails go to your spam folder, and you think the form is not working. This is common for Gmail users.

To prevent this from happening, make sure to add your WordPress email to the approved senders list. It should be:


Just replace top-level-domain.com with your own domain. For example if your website is johndoe.com your email would be:


The following resource shows various ways to add emails to the approved senders list:

Add to approved senders list documentation

Email Subject issue

Some email servers do not work with certain email subject.

If you are receiving other emails, but the not the form emails, then this may be the reason. This happens very rarely but still may be the case.

And it can be detected only by trying to change the email subject:

Conflict with another plugin

If all the above did not solve the problem, disable all the plugins that can be disabled without breaking the site functionality.

Setting up SMTP (Advanced Option)

If all the above did not solve the problem, then using a third party SMTP provider may help you start sending and receiving emails again. Note that this is more technical to setup. We recommend installing the WP Mail SMTP plugin and following the steps below:

Plugin Site: https://wordpress.org/plugins/wp-mail-smtp
Installation Tutorial: https://wordpress.org/plugins/wp-mail-smtp/#installation