When creating an email campaign template, both in a one-time email campaign or in an automated sequence or a single email, you need to remember that the maximum possible size is a 20MB limit for the total email attachments.
If you need to attach a bigger file, insert the link to the file in your Google Drive.
How to Attach a Large File to an Email
If you need to send a file that exceeds the attachment size limit:
Upload the file to your Google Drive.
Click “Share” and adjust the sharing settings (e.g., “Anyone with the link can view”):
Copy the link to the file.
Paste the link into your email message.
This way, the recipient can easily access and download the file.
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