AOL Mail allows email attachments up to 25MB total. Due to base64 encoding overhead, files over 18–20MB may fail. Compress yours here to be safe.
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Drop your PDF here
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Target size (optional)
targeting 20 MB
💡 Good to know
→AOL Mail allows a maximum of 25MB total attachment size per email, for both incoming and outgoing messages.AOL Help ↗
→Email attachments are base64-encoded in transit, adding approximately 33% overhead. A 20MB file can exceed the 25MB limit once encoded.
→The 25MB limit on AOL Mail applies to the combined size of all attachments in one email, not per individual file.AOL Help ↗
→Even if AOL sends the file successfully, the recipient's email provider may have a smaller limit and bounce the message.
→For files over 20MB, using a cloud storage link (Google Drive, OneDrive, Dropbox) is more reliable than attaching directly.
❓ Frequently Asked Questions
What is AOL Mail's attachment size limit?+
25MB total per email, covering all attachments combined. Due to base64 encoding overhead, files over 18–20MB may fail even though they appear under the limit.
Why did my 22MB PDF fail to send on AOL Mail?+
Email attachments are base64-encoded in transit, which adds about 33% to the actual size. A 22MB file becomes roughly 29MB encoded, exceeding AOL's 25MB limit.
Can I send multiple PDFs in one AOL Mail?+
Yes, but the total size of all attachments combined must stay under 25MB. Encoding overhead applies to each file.
What should I do if my PDF is too large for AOL Mail?+
Upload it to Google Drive, OneDrive, or Dropbox and share the link in your email instead of attaching the file directly.
Is AOL Mail's 25MB limit the same as Gmail and Yahoo?+
Yes. Gmail and Yahoo Mail also allow 25MB. Outlook is more restrictive at 20MB. Compressing to under 18MB ensures delivery on all four platforms.