How to unset Mail-setting when creating new acme-issuer

[tom-wegener]

Thank you for your library, it helped us a lot.

What is your question?

We are integrated certmagic as library to allow customers to work with their CAs but at the moment the email setting for the AcmeIssuer gets reused when setting it to an empty string, is this intentional? And if yes, how can we deactivate it?

What have you already tried?

setting the Email attribute to empty string as in:

magicConfig := certmagic.New(cache, *customConfig)

customIssuer := certmagic.ACMEIssuer{
	Agreed:               true,
	Email:                "",
	CA:                   config.AcmeServer,
	CertObtainTimeout:    20 * time.Second,
	DisableHTTPChallenge: true,
}

magicConfig.Issuers = []certmagic.Issuer{certmagic.NewACMEIssuer(magic, customIssuer)}
magicConfig.ManageSync(ctx, []string{Hostname})

Include any other information or discussion.

certmagic v0.20.0 but we are okay with upgrading, I just didn't find anything usefule for this problem in the changelog.

Bonus: What do you use this package for, and does it help you?

As a library to allow users to set their own certificates.

[mholt]

Best practice is to always provide an email address if possible, so CertMagic will look in storage for the most recently used email address and use that, if the email field is blank. You would have to delete previous ACME accounts (not recommended! account creation is tightly rate limited with Let's Encrypt, and a bit annoying at all other CAs).