How to Attach a File to Autoresponder Emails

October 31, 2025

The Autoresponder Email is an invaluable tool on a form that allows you to send form respondents a copy of the data they submitted. And, you can also attach files when you need to. For example, if you want to send extra information in a PDF or Word file, you can just attach that in the form’s Autoresponder Email.

You can attach supported files to Email Autoresponders in a few easy steps. Here’s how to do it:

  1. In Form Builder, in the orange navigation bar at the top of the page, click on Settings.
  2. In the menu on the left, click on Emails.
  3. Hover your mouse over the Autoresponder Email and click on the Pencil icon.
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  1. Or, if you want to create a new Autoresponder Email and attach the file there, click on the Add Email button at the top and choose the Autoresponder Email.
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  1. Next, click on the Advanced tab.
  2. In the Attach a File section, click on Upload File to attach your file.
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  1. Finally, click on Save at the bottom of the page, and you’re done.
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Notes:

  • The Autoresponder Email’s Attach File option supports the PDF, DOC, DOCX, PNG, JPG, and JPEG file formats.
  • The maximum file size allowed for attachments in Autoresponder Emails is 5 MB. If a file is larger than that, it won’t be attached to the email. But, larger files can be handled by setting up a Custom Sender Email and connecting that to your account so you can use it as an Autoresponder Sender via SMTP.

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