E-mail diagnostics

Confirmation that the recipient server accepted e-mail

SMTP logs can show that a remote server accepted a message, which helps resolve disputes about delivery.

E-mail security Contact

What it proves

It proves server acceptance, not necessarily that the user read or found the message.

Why it matters

It helps separate sender-side issues from filtering or mailbox-side problems.

For companies

It is useful for invoices, orders, legal notices and support communication.