There is no unsubscribe link in a Credda confirmation request, and the honest reason is that you have no Credda account. There is no preference to switch off and no mailing list to leave, because you were never put on one.
What exists instead is a hard limit on how many times you can be contacted, and one action that ends it early.
The limit, whether you do anything or not
Three messages, maximum, about any one request. The first ask, then at most two follow-ups: roughly a week after the first, then roughly ten days after that. The last one says plainly that it is the last one and that ignoring it is a permitted answer.
The person cannot buy themselves more. Their own resend button spends the same three, with at least three days between messages. Someone who uses the budget by hand has used it.
Chasing stops for good after 45 days of silence. For an ask to agree terms before work starts, it stops after 21 days.
Several records become one email. If a care agency names the same former manager on a job, a skill and a certificate, that is one message listing all three, with a separate yes and no for each. Not three emails.
The one thing that ends it early
Decline. It needs no account, no reason and no explanation, and it takes one click plus a button on the page.
On a delivery confirmation, declining ends the chasing for that record.
On a request to vouch for someone's history, declining is stronger: that person cannot ask you again about that item at all, at any interval or count. They can name a different person instead, which is the legitimate next step for them and is not aimed at you.
If your address should never have been used, the options "I am not the right person to ask about this" and "I do not recognize this work or the person who sent it" are both complete answers and both stop that chase.
What none of this stops
A different person naming you next month. The limit is per request, not per lifetime. If a self-employed electrician you worked with in March names you on a record, and an unrelated care agency names you in August, those are two separate asks with their own limits.
Credda cannot promise you will never be emailed again, and this guide is not going to pretend otherwise.
What Credda does with your email address
It was typed in by the person who named you on the record.
It is used to send that ask and its follow-ups, and to send the answer back to the person who asked.
It never appears on their public record. It cannot be included in anything the product serves to a counterparty or to a public page.
It does not create an account for you and does not give you a profile.
If you want a person to deal with it
Write to support@credda.io. That is a human, not a form that resolves itself.
If you do have a Credda account
This guide is about requests sent to you about somebody else's record. Separately from that, an account holder can turn off the weekly summary about the confirmations outstanding on their own record, in their own email settings. That setting has no effect on requests other people send you.