That's actually mentioned a few sentences before the quote above in that GitHub issue ;-) The Mailspring ID stores metadata for things like read receipts and link tracking, but that's pretty much it!
My bad. I somehow missed it.
Since you are here:
- What if I am sending an email to a person who doesn’t use Mailspring? Can the tracking still be achieved? I am don’t know the technical details of how email works but I believe it can’t be done unless the mail client adds something to the mail being sent. Right? So how does it work with Mailspring IDs?
- Can I opt to not track my mails/activities and not be tracked too?
- What all the meta data leavea my local system and goes to Mailspring? Is there a complete list somewhere? Also how are they stored on your serves?
Apologies again for posting incorrect info about your OSS.
Not something I'd be interested in as I don't need another Electron app (I think it is?) on my machine, but if someone had a particular liking for this it might be doable.
I asked them about it and they never replied. I wish it was just a native (or not) IMAP client and I definitely want out of those Link and Open Tracking features.
(Edit):
There's a GitHub issue related to it - https://github.com/Foundry376/Mailspring/issues/33
The dev is very clear about it
--- but for now Mailspring needs to target paying customers with great pro features so I can continue working on it full-time. The Mailspring ID is a core component of these Pro features and a lot of exciting stuff on the roadmap, like team templates, read receipt analytics and shared folders. Unfortunately, it doesn't make sense to remove the Mailspring ID and make the mail client better for you, because it pulls us further away from doing a great job on the pro features for paying users that will ultimately make this a long-lasting open source project.
Hope that helps! I'm going to flag this as a wontfix for now, but I welcome everyone's thoughts and feedback here. ---
So no, not an email client I would like to use.