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Email · requirements recordNeeds a human check

Outlook upload limit: not verified yet

Attachments · Outlook app. Microsoft's page describes the Outlook app's limit for internet accounts such as Outlook.com. A person must confirm the limit in Outlook.com on the web before this record is published.

We have not published this limit. A script could not read it on the provider’s page, or the page does not state one. The record is queued for a person to verify in a browser. Until then this page stays out of search and out of the dataset, and we do not suggest a number. The fields below are what we could read so far.

The record

3 sourced fields · 1 source page
File size
20 MB for internet accounts
In their words“For internet email accounts such as Outlook.com or Gmail, the email size limit is 20 megabytes (MB).”
support.microsoft.com/en-us/outlook/reduce-attachment-size-to-send-large-files-w · checked 2026-10-05 · re-check every 90 days
File size
10 MB default for Exchange
In their words“For Exchange accounts (business email), the default email size limit is 10 MB.”
support.microsoft.com/en-us/outlook/reduce-attachment-size-to-send-large-files-w · checked 2026-10-05 · re-check every 90 days
Also
The message counts too
In their words“This limit includes both the size of the attachment and the size of the email.”
support.microsoft.com/en-us/outlook/reduce-attachment-size-to-send-large-files-w · checked 2026-10-05 · re-check every 90 days

Related limits

EMAILGmail25 MBchecked 2026-10-05 EMAILYahoo Mail25 MBchecked 2026-10-05 EMAILiCloud Mail20 MBchecked 2026-10-05

Quotes belong to their publishers and are reproduced to cite the rule. Limits change; check the provider’s page, linked on each field, before a deadline. pdfnex is not affiliated with any provider or government agency listed here.