A notification email is the email that is sent to you, the owner of the form. The "from" or "reply-to" address on this email can be the email address of the person filling out the form, email@example.com, or a custom address that you can type in.
Due to recent changes in how email providers like Google and Yahoo are handling spoofed emails all notification emails are now sent from 'firstname.lastname@example.org or the default email address set in your account's Email Settings. Mapping the "From" address to the e-mail address field on the form will allow you to reply to that email address.
To set the "email from" address to the email address of the person filling out your form, you must first add an email field to your form on the Build tab. A lot of people forget this step and try to build the notification email before building their form. This won't work.
Using a Custom 'Email From' Address
Sometimes, to help you filter the emails, you may want to set the "email from" address to a specific address of your own. You can do this by choosing "Custom Address" from the "email from" drop-down list, and then typing in the email you want notification emails to be sent from in the box provided.
Note: You must use the SMTP integration located on your Email Settings page in order to use this feature, if your plan allows you access. The 'Reply To' address will need to match the default email address set on that page.
If you do not use the SMTP integration the From Address will default to email@example.com.
- You can purchase an SMTP mail account to send mail through using a service such as mailgun or sendgrid and configure those SMTP credentials for sending your mail. In this case, Notification emails would still not be able to appear as sent from the Form submitter, rather this would appear as "firstname.lastname@example.org" vs. "email@example.com".
- If you are using gmail, you could configure your gmail for business SMTP server (smtp.gmail.com) to send the mail on your behalf and continue to send from @yourdomain.com. You could then route those emails back through a Group in Gmail for Business, or have it come to one designated person. Currently, you would be able to use one SMTP login to send mail on behalf of anyone from @yourdomain.com. There is more information about that here:https://support.google.com/a/answer/176600?hl=en.
As you can see you'd have a 2000 mail limit going with option 3 and a few other limits as noted on https://support.google.com/a/answer/166852