slackapi/deno-slack-sdk

Slack App installed via CLI in our Enterprise Grid failing to send emails

Aberta

#510 aberto em 3 de mar. de 2026

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help wantedserver-side

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Description

We have an Enterprise Grid plan and need to send emails via SMTP from our hosted CLI Slack app (App ID: A071YDWMBG8) that forwards messages in a channel to our ticketing system.

This solution used to work until recently, when we realised it stopped working with an SMTP error

Current Issue:

Error: "NotCapable: Requires net access to smtp.gmail.com:587." error: Uncaught (in promise) NotCapable: Requires net access to "smtp.gmail.com:587", run again with the --allow-net flag conn = await Deno.connectTls({ outgoingDomains configured in manifest SMTP ports (587, 465) are blocked by the platform Steps taken: We used the --allow-net flag, yet no success

Please help

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