Forward a Proton Mail address (support@) to a Slack channel

Steps

1. 1

   Check your plan

   Auto-forwarding is on Proton Mail Plus, Proton Unlimited and every other paid Proton Mail plan. On Proton Free you can only forward emails one at a time.

2. 2

   Add a forwarding rule

   In Proton Mail open Settings > All settings > Forward and auto-reply and click Add forwarding rule. If you have several addresses, pick support@ under Forward from. Enter the forwarding address from your RelayMail setup page (inbox-...@relay.relaymail.app). Add conditions only if you want some of its mail to stay out of Slack.

3. 3

   Accept the invitation

   Proton emails an invitation to the RelayMail address, and forwarding starts only after someone clicks Accept forwarding in it. Until forwarding is confirmed, RelayMail passes that email on to the email on your Slack account: open it there and click Accept forwarding.

4. 4

   Send a test email

   Email support@ from an outside account. When it arrives, RelayMail confirms forwarding by itself and the email appears in the channel as a thread; reply there and the sender gets your reply by email.

Confirming the forward

Proton sends an invitation to the destination and forwarding waits until it is accepted. RelayMail passes that invitation on to the email on your Slack account, so you can click Accept forwarding from there. Replies you write in the Slack thread go out from noreply@relay.relaymail.app with Reply-To set to your support address, so the customer's answer comes back through the same forward into the same thread. To send replies as support@ itself, verify your domain in RelayMail (see the custom domain guide); that adds sending records for RelayMail and does not change where your inbound mail goes.

What to watch for

• Forwarding to an address outside Proton turns off end-to-end encryption for the emails to and from that forwarding address. Your other Proton addresses are not affected. Decide whether that is acceptable for support@ before you turn it on.
• Emails that Proton already forwarded to you cannot be forwarded again by a second rule.
• Emails left out by a rule's conditions are marked in Proton with a yellow triangle, so you can see what did not go to Slack.
• To pause or stop, open Forward and auto-reply and use the menu on the rule.

Questions