No, you get spam because the email protocol doesn’t stop spam. You could create a new email address but then you have to give that to everyone who might not appreciate yet another contact method they have to remember for you.
I could be wrong but I’m pretty sure DeltaChat uses PGP, which leaks all of your metadata to your email provider, ISP, and governments. It isnt private but is secure.
These days the best thing you can do is use Signal.
No, you get spam because the email protocol doesn’t stop spam. You could create a new email address but then you have to give that to everyone who might not appreciate yet another contact method they have to remember for you.
I could be wrong but I’m pretty sure DeltaChat uses PGP, which leaks all of your metadata to your email provider, ISP, and governments. It isnt private but is secure.
These days the best thing you can do is use Signal.
I haven’t used Signal.
Is your ‘registered Signal number’ your phone handset number?
From this page:
https://support.signal.org/hc/en-us/articles/360007318691-Register-a-phone-number
[You are right, Delta Chat uses AutoCrypt, which is OpenPGP based.]