Mailify

[thomas-zahner]

Replace check-if-email-exists with mailify.

Rationale

• Better results, see example runs below
• Resolve licensing issues
• check-if-email-exists seems to be quite commertialised
• check-if-email-exists seems to be unmaintained or careless about actually publishing their code on crates.io

Old example run

This is master with check-if-email-exists. The results seem to be quite wrong or useless.

echo '[email protected] [email protected] [email protected] [email protected]' | cargo run --all-features - --include-mail -v

     [200] mailto:[email protected]
     [200] mailto:[email protected]
     [200] mailto:[email protected]
     [200] mailto:[email protected]

🔍 4 Total (in 0s) ✅ 4 OK 🚫 0 Errors

New example run

With this PR we actually get useful and well categorised results. Note that that running this on different networks/machines might yield more Unknown results. See State of SMTP for the technical reasons.

echo '[email protected] [email protected] [email protected] [email protected]' | cargo run --all-features - --include-mail -v

   [ERROR] mailto:[email protected] | Unreachable mail address mailto:[email protected]: No MX records found for domain
 [UNKNOWN] mailto:[email protected] | Unknown mail status (Mail server expected our origin IP to have a DNS PTR for reverse lookup): Mail server expected our origin IP to have a DNS PTR for reverse lookup
   [ERROR] mailto:[email protected] | Unreachable mail address mailto:[email protected]: Mail server rejects the address
     [200] mailto:[email protected]

Issues found in 1 input. Find details below.

[stdin]:
   [ERROR] mailto:[email protected] | Unreachable mail address mailto:[email protected]: Mail server rejects the address
   [ERROR] mailto:[email protected] | Unreachable mail address mailto:[email protected]: No MX records found for domain

🔍 4 Total (in 0s) ✅ 1 OK 🚫 2 Errors ❓ 1 Unknown