Attaching documents to a message and limits

You can attach multiple files to an email in two different ways:

 

  1. When selecting the files to attach, select the first file, hold down control on your device, and select the other documents you would like to attach.

Add attachments in the composer

2. The other way is to use drag & drop from the file directory, directly in to the composer.

The size limit of the attachments it is less than 25MB (per email), and the total number of files that can be attached is 100.

Rate This Article

(7 out of 14 people found this article helpful)
Post Comment

28 comments

  1. Matthew Tooch

    Is there any plans on enlarging the send and receive attachment size? For instance Tutamail can send and receive 25 mb attachments. I’m considering switching because of the larger files size available, but prefer Protonmail

  2. ProtonMail Support

    The attachment size has been increased to 25 MB.

  3. DM

    Why is it with the ios app the only attachment option is photos? There should be a way to add basic office docs.

  4. ProtonMail Support

    The option to import another files is now available on our iOS app.

  5. Net

    Any plans to increase the size of attachments in the future, especially for direct transfer of emails inside protonmail?

  6. ProtonMail Support

    Hi,
    We have increased the attachment limit to 25MB.

  7. Surfer

    Will there be a way on the mobile app to send attachments other than just pictures? It would be very useful to be able to access Google Drive, Dropbox, etc. and add files from these sources to a Proton mail message (from mobile).

    Thanks!

  8. Mariluz

    How can I increase the font size?

  9. ProtonMail Support

    To increase the font size in the composer, click on Text options (the button with the letter A) to expand the additional text options toolbar.

  10. Enrico

    Can I send .zip files in the attachement?

  11. Proton Editor

    Yes, you can attach ZIP files to an email message, just make sure the total size of the attachments is under the 25 MB limit.

  12. Tarek

    We need to increase the attachment limit please

  13. rudzik

    Hi
    How can I remove and suppress a file to an email received (for example to decrease my data space) ?
    Thanks

  14. ProtonMail Support

    You cannot remove just an attachment from a received message. If you need to free up storage space, you will need to delete the whole message.

  15. bulk up

    25MB attachment is amateur. If I am using PROTON it’s because I don’t want to upload to YouTube or any other big brother machine. Let’s get it up’d or create a space where we can load it to. Thanks – keep up the good work!

  16. Monier

    Attachments of only a few MB seem to be crashing Firefox/Chrome and causes Edge to hang… any fixes coming soon?

  17. ProtonMail Support

    Can you please contact our support team using the support form: https://protonmail.com/support-form, at contact@protonmail.ch or support@protonmail.ch so we can look into this further?

  18. Tejido de Esparto

    I can’t download any of te attachments that i recieve. Any ideas why?
    Thanks.

  19. ProtonMail Support

    Please contact our support team at https://protonmail.com/support-form.

  20. Channing Elizabeth Johnston

    My protonmail. Which was [redacted]@protonmail. Was hacked over a month ago by unknown hackers. They used this account and 2 gmail accounts to send out images of cjildren, violent joke memes and links to. Kiddie porn. One lady took over my identity and hacked into my LinkedIn account, sending out adds and networking as me. Also, she joined meet up dotcom as a writer last NAME corrosion formed a writer’s anonymous group under my email name and opened a PayPal account and hacked. Twitter and FB.. I need to get back into my protonmail if pissible.

  21. ProtonMail Support

    Please contact our support team at https://protonmail.com/support-form for assistance.

  22. Emmet Arries

    Is there any plan to increase the Attachment limit? I need to send attachments bigger than 25mb. Thank you!

  23. ProtonMail Support

    There are no plans to increase the attachment limit at this time, but we may consider this in the future.

  24. Jean-Pierre Bélanger

    I have geen using the proton to transfer my emails from yahoo to protonmail using thunderbird.

    Quite often, it complains about security timeout but I noticed that it was a side effect of large emails; it refused to transfer files where attachment is too big (mostly pictures). That error kept bugging me to manualy select a new block of email and resend it manually. What a pain!

    Yahoo has a limit of 25 MB, just as Protonmail. However, my theory is that Protonmail has a limit of 25 MB for attachment AFTER being encrypted. One of your FAQ tells that the compression ratio is about 1.4 times the non-encrypted size. I think that you should increase your maximum size of stored emails to 35 MB and accept receiving non-encrypted messages of 25 MB. That would keep protonmail works fine with other people who use yahoo email domains (and others)

  25. Anthony

    Just to be sure I understand limit per email is 25mb, how many docs attached? 100 files per email?

    Is there another limit on the number of emails with attachments in total?

  26. ProtonMail Support

    The size limit per message is a little less than 25 MB for the whole message before encryption, including the message body and attachments. The number of attachments allowed in one message is 100.

  27. Anonymous

    Can administrators at ProtonMail server see the contents of attachments, if they are uploaded via ProtonMail?

    I understand external email arrives as plaintext unless sender also uses ProtonMail or encrypts with PGP, however, if we use ProtonMail interface or app, are attachments encrypted before uploading?

  28. ProtonMail Support

    All mail content is encrypted locally before the message is sent. ProtonMail does not have access to any of the stored email content.

Leave A Comment?