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I am trying to attach a PDF of just 5024KB to a mailing in CiviMail. The attachment is failing, with no explanation as to why. Is there a file size limit or could anyone suggest another reason a file would not attach? Many thanks.

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The maximum file size attachment can be set under Misc (Undelete, PDFs, Limits, Logging, Captcha, etc.). Navigate to CiviCRM >> Administer >> System Settings >> Misc (Undelete, PDFs, Limits, Logging, Captcha, etc.). Try after updating the maximum file size. enter image description here HTH

Pradeep

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  • Please note that SMTP providers have their own limits – KarinG - Semper IT Jun 30 '18 at 21:08
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You might also want to look at the upload_max_filesize directive in php.ini

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SMTP providers have their own limits as to what attachments/file sizes they allow. For example - CiviSMTP (UAS) - has been max = 1MB for a long time. Not 100% if that has changed, but it makes sense that there are limits as to attachments to bulk email messages.

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