If savering in a message in Slack is just the beginning in the chain of events, use this Nekton integration to kick it off. When a message is saved, an email fires off to the recipient of your choice, which could be your own email address.
Send and receive email via a custom Nekton email address at "Nektonmail.com". This is great for triggering off of emails and sending custom emails. (Max of 10 email sends per hour.) Have direct access to your own email servers? Check out our IMAP and SMTP services!