What actually happened
In classic Outlook for Windows, the Rules wizard could start from "Apply rule on messages I send" — file a copy of outgoing mail by recipient, keep sent and received mail for a project in one folder, or drop a copy of everything you send into your Inbox for follow-up. In new Outlook and Outlook on the web, rules trigger only on messages you receive. There is no equivalent setting, no hidden toggle, and no server-side rule that files into folders. If you went looking and couldn't find it: you didn't miss a menu. It isn't there.
You're also not alone. The public question threads about this on Microsoft's own support forums have accumulated dozens of "same question" votes and years of follow-ups, and community MVPs maintain long-running workaround guides because the searches never stop.
The four options, with their real costs
1. Stay on classic Outlook
Classic Outlook still has the sent-mail rule, and if you have the choice, keeping it is a perfectly reasonable answer — plenty of people have rolled back for exactly this reason.
Classic runs on Microsoft's retirement clock, not yours. Migrations to new Outlook are rolling through organizations and personal machines on an ongoing basis, and when yours lands, this option ends with no appeal.
2. CC or BCC yourself, then file the copy
The workaround the community has carried for years, and it genuinely works:
- On a message you want filed, add your own address to CC or BCC.
- In new Outlook, create an ordinary incoming rule: from you (or matching a keyword you include) → move to the folder you want.
- The copy that arrives back gets filed by that rule.
You keep a duplicate of every message — the filed copy is the one that arrived, while the original still sits in Sent Items. With CC, your recipients can see you copying yourself. And in new Outlook there's no automatic way to add the CC/BCC, so it's a per-message habit you have to keep.
3. Power Automate
If you have a Microsoft 365 work account, Power Automate can watch your Sent Items and move messages matching conditions into folders. It's real, and for one or two simple patterns it can be enough.
You're building and babysitting a flow per pattern — connections expire, flows silently suspend, and every new client folder means editing automation. It's a hobby project wearing a filing system's clothes, and it's generally not available on personal outlook.com accounts.
4. SentRules
SentRules is a hosted service — nothing to install. You connect your mailbox once and write rules like "anything I send to acmelaw.com files to Clients / Acme Law." You keep Outlook's normal Send button; after Outlook confirms the send, SentRules moves the sent copy into the folder your rule names and marks it with a "Filed by SR" category. Setup reads your existing folders and, where a company's mail is already filed, proposes the folder you already use. Because filing happens in Microsoft's cloud after the send, mail sent from desktop, web, and phone all files identically — something the old classic rule never did. It never requests permission to send mail, and it refuses to guess: if two rules conflict, your copy stays safely in Sent Items and it tells you.
Its honest limits: it moves the sent copy rather than duplicating it — the message lives in the project folder, not in Sent Items too. It's for individual mailboxes (personal outlook.com or Microsoft 365); it doesn't do shared-mailbox or send-as filing today. It costs $39.99 a year after a 14-day free trial, and the free workarounds above may genuinely be enough if your volume is low.
Which one fits you
| If you… | Best fit | What it costs you |
|---|---|---|
| Can keep classic Outlook and don't mind the clock | Stay on classic | Nothing, until Microsoft migrates you |
| Send a few filed messages a week | CC/BCC yourself | Duplicates, header noise, a per-message habit |
| Have a work account and like building automations | Power Automate | Flow maintenance, silent failures |
| File sent mail daily into client or project folders | SentRules | $39.99/yr, and the sent copy moves out of Sent Items |
Questions people actually ask
Can new Outlook apply rules to sent messages at all?
No. Rules in new Outlook and Outlook on the web run on received mail only. "Apply rule on messages I send" exists in classic Outlook and nowhere else, and Microsoft hasn't committed to a date for the sent side in new Outlook.
Will Microsoft bring it back?
They haven't said no forever — they've said classic-only, with no committed date, for several years running. Plan around what exists, not the backlog.
Does SentRules copy or move the sent message?
It moves. One copy, in the folder your rule names, wearing a "Filed by SR" category. If your system depends on everything also staying in Sent Items, the CC-yourself workaround fits you better today — that's the honest answer.
Does it work on a plain personal outlook.com account?
Yes. Personal outlook.com and Microsoft 365 alike, and sends from your phone or the web file exactly like desktop sends, because filing happens server-side after the send.
What happens when no rule matches?
Nothing — deliberately. Your sent copy stays in Sent Items, untouched. SentRules never guesses a folder, and conflicting rules leave the copy where it is and tell you, instead of flipping a coin with your mail.