Can Mail Attachments Use iPhone Storage?

The answer

Yes. Apple lists Mail as an iPhone storage category and defines it as emails and their attachments, so mail content can contribute to local device storage.

Why

Apple's current iPhone and iPad storage documentation separates Mail from Messages, Photos, Media, and Apps. In that breakdown, Mail specifically includes emails and their attachments.

When it is usually OK

• You use the Mail app with accounts that keep message data on the device.
• Messages include large photo, video, document, or PDF attachments.
• Mail appears as a significant category in Settings > General > iPhone Storage.

When you should not

• Mail is using little storage compared with other categories.
• The attachments were never downloaded or retained locally in a way that contributes materially to storage.
• Another app or category is the actual storage problem.

Risks and exceptions

• Deleting mail can remove information you still need.
• Mail behavior can vary by account provider and synchronization settings.
• The size shown for Mail should be checked before assuming attachments are the main cause of low storage.

Best practice

Check Settings > General > iPhone Storage before deleting mail. If Mail is a significant category, remove only messages and attachments you no longer need according to the behavior of your mail account and provider.

Alternatives

• Remove large unneeded messages or attachments
• Use your mail provider's web interface to review large mail where appropriate
• Target larger storage categories first if Mail is small
• Save important attachments elsewhere before deleting messages

Frequently asked questions

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