Notes/tl;dr-ish :

Please note that as far as I can find: .heic = now the standard image file extension for any images taken via an apple device’s camera)

** Additional note: proton mail users do not seem to receive any error codes to tell them that these attachments were never sent.

***Please bear with me: I have tried to put all tl;dr info in the title & notes (above), but I struggle to write succinctly. I do believe this to be an issue that may affect any people that attach photos to their emails that were taken by an iphone/ipad.

Based from a comment I made on a laterally related post about .heic preview within proton mail (where other commenters mentioned that .heic photos aren’t recognised or displayed as photos within Proton Drive.

I am making a seperate post rather than just leaving my comment on the original post, as I believe that post was a different enough request to the issue that I have been experiencing, as well as that post being from May 2024.

This is also an issue that I believe proton mail users may not be notified via the app, that their recipients have not received the attached images. This is something I have figured out only after receiving replies back from email recipients that the/some attachments I have referred to were not sent to them.

Please see the link to the previous post here: https://protonmail.uservoice.com/forums/945460-general-ideas/suggestions/48426479--heic

My comment:

WAIT—I trawled through this forum to try to find if anyone else was having a similar ongoing issue to me, as an ios & ipadOS app user.

might THIS be the reason why whenever I attach photos I’ve taken on my iphone to an email on the proton app (via: import from photo library), I will say “please see attached” and although I can see the attached photos, the receiver gets back to me saying that there were no attachments??!?!?

My workaround this year has been uploading photos from my camera roll to the ios files app, and then trying to attach via importing from files.

But I didn’t realise that any photos that I’ve been doing this with (taken from an iphone, where .heic seems to have been default for a while), over the past ~1 year may have not ever been received by any of the email’s recipients!!!!

I really wish that proton could officially clarify what the deal is with .heic file compatibility is, both on proton mail (app & and web), and any of the other proton services (from what I can gather from the comments section).

This means that I can at least know that any .heic photo attachments should go through a .jpg converter first in the meantime, and that I don’t need to worry about .jpg, .jpeg, .png photo file formats not being sent through the ios photo library import, via proton mail app.

I have literally been creating new google drive shared folders (google bleh) to send a link to email recipients out of fear that the photos may have disappeared from the attachments without me having any clue……that and avoiding sending images over proton mail on apple apps, exporting from my photo library to my phone’s files, and other convoluted ways to try troubleshoot, since at least a year ago now.

Can proton PLEASE provide some clarity so we can find workarounds if it’s not actionable, or if there will be a delay in adding .heic compatibility, which would be very understandable! I just wanna know what is sending/what disappears :”(