[MacPorts] #62924: Add mailhog port

[MacPorts]

#62924: Add mailhog port
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 Reporter:  gagarine  |      Owner:  (none)
     Type:  request   |     Status:  new
 Priority:  Normal    |  Milestone:
Component:  ports     |    Version:  2.6.4
 Keywords:            |       Port:
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 MailHog is a SMTP server for testing in dev environment. Would be nice to
 be able to install it from macports.

 https://github.com/mailhog/MailHog

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Ticket URL: <https://trac.macports.org/ticket/62924>
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