I’ve using Mozilla Relay to generate one new email address for every website that I have to register. Lately it seems tho that the big/medium sites are rejecting any email from mozmail.com, some even say “temporary email services are not allowed”.
Is this just with the service from Mozilla or is it becoming general practice? Is there any service that is still flying under the radar?
Rejecting temporary email (particularly mailinator but sometimes even hotmail) has been a common thing. Fastmail temporary addresses usually work, but you need a paid fastmail account to get them.