Attach files to a message
You can include downloadable files in your Flexmail emails by linking to files stored in your media library. Contacts click the link to download the file directly. This approach keeps your email file size small and avoids the deliverability problems associated with large email attachments.
Prerequisites
- Your file is uploaded to the media library. Files must each be under 2 MB.
- You have a message open in one of the three editors.
Uploading your file
Before you can link to a file, it must be in your media library. Go to Settings, then Media library, and upload your file. Common use cases: PDF catalogues, brochures, price lists, event programmes, and white papers.
Email Builder
- Click a text, heading, list, image, or button element on the canvas.
- Add or edit a link using the toolbar or the settings panel.
-
In the link type selector, choose File as the link type and click Media.

- Select the file in your media library and click Insert file.
- On the Add a link page, click Insert link.
-
Click Save.

Wizard template
Article CTA (button)
- Add a link name.
- Next to the link field, click the D icon for Documents.
- Select the file in your media library and click Insert file.
-
Click Save.

Article editor
- In an article, highlight the text or image you want to link.
- Click the link icon in the toolbar.
- Next to the Link URL field, click the browse icon.
- Select the file in your media library and click Insert file.
- On the Insert/edit link screen, click Insert.
-
Click Save.

HTML editor
- Highlight the text or click the image you want to link.
- Click the link icon in the toolbar.
-
Next to the Link URL field, click the browse icon.

- Select the file in your media library and click Insert file.
- On the Insert/edit link screen, click Insert.
Pro tips
- Mention what the link is in the surrounding text: "Download our autumn catalogue (PDF, 1.2 MB)" sets expectations and reduces hesitation to click.
- Give your files a clear name before uploading. Something like "product-guide-autumn-2025.pdf" is much easier to identify later than "document1.pdf".
Common mistakes to avoid
- Uploading a file larger than 2 MB. The media library enforces a limit of 2 MB per file. Compress PDFs with tools like Smallpdf or Adobe Acrobat before uploading if needed.
- Linking to a file that was deleted from the library. Always verify that the file is available in the media library before sending.
- Not enabling link tracking for download links. If you want to know how many contacts downloaded your file, make sure tracking is enabled for that link in the Link tracking section.
Next steps
- See "The media library" for organising and managing your uploaded files.
- See "Link tracking" for tracking file download clicks in your campaign reports.
- See "Why your media files should stay under 2 MB" for file compression guidance.




