Attach Files to Emails
Learn how to attach files to outgoing emails, including supported file types, size limits, and drag-and-drop uploading.
Learn how to attach files to outgoing emails, including supported file types, size limits, and drag-and-drop uploading.
This guide explains how to attach files to outgoing emails in the JobsiteOn inbox. You will learn which file types are supported, how to use drag-and-drop uploading, what the size limits are, and how to manage attachments before sending.
By the end you will know how to:
JobsiteOn supports the most common business file types:
| Category | Formats |
|---|---|
| Documents | PDF, DOCX, XLSX, CSV, TXT |
| Images | JPG, PNG, GIF, WEBP, SVG |
| Archives | ZIP |
| Presentations | PPTX |
Note: Executable files (.exe, .bat, .sh) and script files are blocked for security reasons. If you need to share these types of files, compress them into a ZIP archive first.
Each individual attachment can be up to 25 MB. The total combined size of all attachments on a single email cannot exceed 50 MB. If your files exceed these limits, consider using a file sharing service and including a download link in your email body instead.
You can attach files when composing a new email or replying to an existing conversation. Open the compose window by clicking Compose in the inbox sidebar, or scroll to the reply area at the bottom of an open conversation.
Click the paperclip icon in the editor toolbar. Your operating system's file picker opens. Navigate to the file you want to attach, select it, and click Open.
You can select multiple files at once by holding Ctrl (Windows) or Command (Mac) while clicking files in the picker.
Screenshot: The compose area with the paperclip attachment button highlighted in the editor toolbar
Drag one or more files from your desktop or file explorer directly into the compose area. A drop zone indicator appears with a highlighted border when you hover files over the editor. Release to upload the files.
Animation: A user dragging a PDF file from their desktop into the compose area, showing the drop zone highlight and the file appearing as an attachment card
After adding attachments, they appear below the message body as file cards. Each card shows:
Click the X button on any attachment card to remove it before sending. You can also click an image attachment to preview it inline.
Screenshot: Three attachment cards below the compose area showing a PDF, a JPG image, and a DOCX file with remove buttons
Once your attachments are in place and your message is ready, click Send. The files are included with your email and the recipient can download them from their email client.
When a customer sends you an email with attachments, the files appear on the message in the conversation thread. You can:
Check that the file does not exceed 25 MB and is a supported file type. If the issue persists, try refreshing the page and uploading again.
Confirm the file is not corrupted by opening it on your own computer first. Some older email clients may have trouble with newer file formats like WEBP. Consider converting to a more universal format like JPG or PDF.
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