The short answer: make one forward rule per client, keyed on the client’s email domain, in the mailbox where client mail lands. Outlook can do it with an inbox rule. alfred_ does it from one plain line per client, such as “forward anything from harborviewhotels.com to dana@”, and when an account moves to another account manager you change that line by text.
The Outlook way, and where it stops
Say you run a commercial cleaning and facilities company with five account managers and forty accounts. Clients are supposed to email their account manager. In practice a building engineer still writes to the owner, a new property manager finds the office address on an old invoice, and the account that moved from Dana to Marcus in June keeps writing to Dana.
Outlook handles the mechanics well. An inbox rule can match on who sent the message and forward it automatically. The same page explains the choice between Forward, which arrives as a forward from you, and Redirect, which keeps the original sender so replies go back to the client. If you have a Microsoft 365 admin, a mail flow rule can add recipients or redirect by condition across the whole company, without touching anyone’s Outlook.
Where it stops is maintenance, not mechanics:
- Inbox rules live in one mailbox. Microsoft describes them as rules for “messages sent to your mailbox.” Every mailbox that gets client mail needs its own set, and nobody can see the whole routing table in one place.
- Account moves are manual. When Harborview goes from Dana to Marcus, someone has to remember which mailboxes have a Harborview rule and edit each one.
- Some rules only run when Outlook is open. In classic Outlook for Windows, Microsoft warns that “certain rules will only run when Outlook is on”.
- Mail flow rules need an admin. That is right for company policy and heavy for “Marcus has Harborview now.”
The alfred_ way
Connect the mailbox where stray client mail lands to alfred_: yours, or the office address if you are the one who signs into it. Then write one route per client in chat on the desktop, or by text.
You: Forward anything from harborviewhotels.com to dana@crestlinefs.com
alfred_: Done. Mail from harborviewhotels.com to office@crestlinefs.com will be forwarded to dana@crestlinefs.com.
You: Forward anything from lakesidemedical.org to priya@crestlinefs.com
alfred_: Done. Mail from lakesidemedical.org will be forwarded to priya@crestlinefs.com.
Illustrative exchange. Names, domains and companies in this post are invented.
Forward rules match on the sender or domain, words in the subject, and whether there is an attachment. Nothing is guessed, which is what you want for routing. If you prefer a form, Settings, Email, Your rules has a “New forward rule” button with fields for the account, sender or domain, subject and attachments, and each forward rule shows when it last forwarded something, so you can see a route is working.
When an account moves
This is the part that goes wrong in Outlook, and it is one text:
You: Harborview is Marcus’s account now. Change the Harborview forward to marcus@crestlinefs.com
alfred_: Updated. Mail from harborviewhotels.com now forwards to marcus@crestlinefs.com instead of dana@crestlinefs.com.
What the team rules library adds
Forward rules are not shared through the team rules library. They re-route mail to a specific person, so each mailbox keeps its own. The library is for the rules every account manager runs on their own mail: text me when a client asks for a certificate of insurance, file supply-house order confirmations into a Supplies folder, do not draft replies to calendar invites. A teammate shares a rule, the owner approves it, and then each account manager switches it on for their own inbox. The library shows how many people on the team use each one.
Where each step happens
- Desktop, in the office: writing the routes in chat or in the forward form, checking when each last forwarded, and approving rules for the team library.
- Text, from anywhere: changing a route the day an account moves, or adding one for a new client from the parking lot of the walkthrough.
- iPhone app: where an account manager reads the forwarded email in one inbox with alfred_’s draft under it. Rules show in the app as a read-only list; creating them happens on the desktop or by text.
The honest caveat
A forward cannot be combined with other actions in one rule. “Forward Harborview mail to Marcus and file it in Clients, Harborview” is two rules with the same condition: the forward, and a move rule. The same goes for a text alert on that client’s mail. Forwarding also does not run on mailboxes connected as “Other email” (IMAP) yet, only on Gmail and Outlook accounts.
If your clients all write to one shared address and your team is willing to work inside it, a shared inbox is a different answer; see how to set up a shared inbox in Outlook. For connecting a Microsoft 365 mailbox, see the Outlook docs and Microsoft admin approval. For text-me rules on client mail, see text alerts for important emails, and for everything else by text, the SMS assistant page.