Yes, pseudoname.io can receive emails.
No, pseudoname.io is a throwaway domain and should be blocked.
You can use MailCheck's free API to automatically block throwaway emails. Read our documentation to get started. No registration required.
A record
185.199.108.153
MX records
mx1.forwardmx.io
159.100.254.129
mx2.forwardmx.io
159.100.254.129