How does RelayMail work?

RelayMail uses email forwarding - you set up your email provider to forward messages to a unique RelayMail address. We then post them to your Slack channel. When you reply in Slack threads, we send the response back as an email. No email credentials are stored.

Which email providers work with RelayMail?

RelayMail works with any email provider that supports forwarding, including Gmail, Outlook/Microsoft 365, Apple Mail/iCloud, Yahoo Mail, Zoho Mail, and custom IMAP servers.

Is my email data secure?

Yes. RelayMail never stores your email credentials. We only receive forwarded emails and send replies through the Resend email infrastructure. Your original email account remains fully under your control.

Can I reply to emails from Slack?

Yes! When an email appears in your Slack channel, simply reply in the thread. RelayMail automatically sends your response as an email back to the original sender, maintaining the conversation thread.

What's the difference between the plans?

Starter ($15/mo) includes up to 1,000 threads per month. Team ($39/mo) includes 3,000 threads and multiple Slack channels. Pro ($149/mo) includes 10,000 threads, custom sender domain so replies come from your own email address, and dedicated support.

What counts as a 'thread'?

A thread is a conversation with a unique sender. If the same person emails you 10 times about the same topic, that's 1 thread. A new email from a different person starts a new thread.

RelayMail

Get Started

Setup Guides

Connect your email to Slack in minutes. Reply to customers directly from Slack threads.

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Gmail to Slack

Forward Gmail emails to Slack and reply directly from threads. Full conversation history synced.

5 minEasy

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Outlook to Slack

Connect Outlook or Office 365 to Slack. Reply from Slack, customers receive normal emails.

5 minEasy

📬

Yahoo Mail to Slack

Forward Yahoo Mail to Slack channels. Two-way replies keep conversations flowing.

5 minEasy

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iCloud Mail to Slack

Connect Apple iCloud Mail to Slack. Reply from threads, emails sent automatically.

5 minEasy

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Custom Domain Setup

Send replies from your own domain instead of relay.relaymail.app. Better deliverability and branding.

10 minMedium

Ready to streamline your email workflow?

Pick a guide above to get started in under 5 minutes.

Get Started