There are a few things to consider here:
- how large are we talking, 10 GB or 500 GB? emails do have a very low limit
- how sensitive is it? consider encrypting the archive with a password before uploading it anywhere
- are you tech savvy? if yes, you can self-host Send, or something similar with this or this
- can be fully customized with the ability to set a password, view times, date expiration, keep it in a bucket for X amount of days etc

- can be fully customized with the ability to set a password, view times, date expiration, keep it in a bucket for X amount of days etc
- if you’re not tech-savvy, you could use some of the public instances, some of those go up to 10GB
- consider also using tools to split files in several chunks with something like 7zip if you want to get under a specific size limit upload
- end users will need to not be confused by having parts of the final archive file
- you can also use some simple p2p approach if you want the simplest/fastest way from 1 computer (yours) to the other person and if it’s not whistleblower critical
(lowest friction of all yet better than WeTransfer any day)
- the web developer that created this project is also trustworthy, hence why I’m recommending this to begin with (even if it is not an open hosted project)