Connect a Microsoft 365 or Outlook mailbox to Commslayer using Standard setup. No daily sending limits.
Time required: about 10 minutes
Setting up something more specific?
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One alias only: support@ goes to Commslayer, your other aliases stay in Outlook. Microsoft 365 alias setup → (15–20 minutes)
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Aliases across several domains: support@yourstore.com, support@yourstore.se, and so on. Microsoft 365 multi-domain setup → (30–60 minutes)
Before you start
- Admin access to your Microsoft 365 account
- Access to your domain's DNS settings
- An email address on your own domain, with a mailbox you can forward from
Step 1: Create your inbox and add DNS records
Come back here once your records have verified.
Step 2: Enable external forwarding
Microsoft 365 blocks external forwarding by default. Nothing reaches Commslayer until you turn it on.
Enable external forwarding in Microsoft 365 →
Step 3: Redirect your mail to Commslayer
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Sign in to Outlook on the web
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Go to Settings → Mail → Rules
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Create a new rule: apply to all messages → Redirect to → paste your Commslayer forwarding address
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Check Stop processing more rules
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Save the rule
Use Redirect, not Forward. Redirect keeps the original sender's details, which is what lets Commslayer match the conversation to the right customer.
Step 4: Test
Send a test email to your support address from a different account. It should arrive in Commslayer within a minute or two.
Only email that arrives after the redirect rule is saved appears in Commslayer. Email already in your Outlook mailbox isn't imported, and there is no way to import it.
What changes in Outlook
- Replies you send from Commslayer don't appear in Outlook's Sent Items. They go out through our email provider, and there is no setting that copies them to Outlook. Every reply is in the conversation in Commslayer.
- Incoming email stays in Outlook too. A redirect rule leaves the original in your mailbox.
- Read status doesn't sync. Replying or resolving in Commslayer doesn't mark the email as read in Outlook.
- Reply from Commslayer, not from Outlook. A reply you write in Outlook doesn't reach Commslayer, so the conversation there still looks unanswered.
Outlook and Microsoft 365 connect with Standard setup only. There is no sign-in option like the one for Gmail.
Microsoft quirks
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"Your organization does not allow external forwarding" (550 5.7.520) means the outbound spam policy in step 2 didn't save. Go back and check it.
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If your DNS is managed inside Microsoft 365, your records live under Settings → Domains → your domain → DNS records.
Anything else? Email troubleshooting →