Module 5 of StartCloud's Microsoft 365: Everyday Skills learning pathway, in five short units with a knowledge check: mail rules and categories so the sorting happens without you, the three filters that make Outlook search find things first go, calendar habits that protect your day including declining properly and blocking focus time, and the right way to share a mailbox or a calendar, which is never by sharing a password.
Making Outlook Work for You
Rules and categories, so the sorting happens without you
Most people sort their inbox with their hands, several hundred times a week, and have never been shown that Outlook will do it for them. That is not a failing on your part. Nobody ever sat you down and explained it, and the settings are not exactly waving at you from the front page.
A rule is just an instruction you leave behind for Outlook, in the same shape you would use for a person: when a message arrives that looks like this, do that. Rules run when the mail lands, in the order you put them in, so the sorting is already done before you look.
There are two versions of Outlook in circulation, so here is where the rules list sits in each. In the new Outlook and Outlook on the web, click the gear icon at the top right, then Mail, then Rules, then Add new rule. In classic Outlook, it is the Rules and Alerts dialog, reached from the ribbon or from File. In either one, right-clicking a message first and choosing Rules is the quickest way in, because it fills half the details for you.
Quick sanity check if you cannot find it at all: rules are a feature of Microsoft email accounts. If your mail is not a Microsoft 365 or Outlook.com account, you are not missing a setting, the feature is not there for you.
The newsletters and the notifications
Every business has a handful of senders that email constantly and almost never need you today. Software update notices, the industry newsletter, the system that emails a receipt for everything. They are not junk, so the junk filter leaves them alone, and they quietly eat your attention twenty times a day.
- Send them straight to a folder called Reading, or Notifications
- Read them when you choose to, not when they arrive
- Nothing is lost, it just stops interrupting
Everything from one system, in one place
The accounting software, the booking system, the job management tool. If a sender always means the same kind of work, a rule can file it the moment it lands, so the folder becomes your queue instead of your inbox being everyone's queue.
- Match on the sender's address, not words in the subject, it is far more reliable
- Give the folder a name you will actually recognise in a hurry
- Check it at set times, the same way you would check a physical in-tray
The messages where you are only in Cc
Being in the Cc field usually means someone wants you to know, not to act. Most mail rules can tell the difference between a message sent to you and one where your name is only in Cc, which is one of the quietest and most useful splits you can make.
- Route Cc-only mail to its own folder and skim it once a day
- Anything genuinely urgent will be addressed to you, or someone will ring
- Warn your team first, so nobody thinks you are ignoring them
This is the trap, and almost everyone falls into it once. Three or four rules you actually use are worth more than thirty you have forgotten about. Start with one, live with it for a fortnight, then add the next. If a folder has not been opened in a month, either put a reminder in your day to check it, or delete the rule and let the mail come back to the front.
Make a rule in the new Outlook or on the web that assigns a category, marks mail as read, or sets an importance level, and classic Outlook cannot display it. You get a warning saying rules made in a different version are not shown. The rule is still there and still running on your incoming mail. You just have to go back to the new Outlook or the web to change it, which is Microsoft's own advice. Worth knowing before you spend twenty minutes hunting for a rule that is working perfectly well.
A category is a coloured label you stick on a message, and it is the opposite of a folder in one important way. A message can only be in one folder, but it can carry several categories and still sit right there in your inbox. That makes categories perfect for the state something is in rather than the topic it is about: waiting on someone, needs the boss, do this week. Colour does the work, your eye finds it in a second, and nothing has to move anywhere.
Here is the thing nobody mentions about the search box: by default it is looking almost everywhere at once. The subject line, the body of the message, who sent it, who received it, and the text inside attachments. That is why typing one hopeful word returns four hundred results and you go back to scrolling.
Search is not failing you there. It is doing exactly what you asked, which was very little. The trick is not better words, it is fewer places to look. Three narrowing moves will find almost anything first go.
You almost always remember the person, even when you have lost the subject line completely. Narrowing to one sender cuts a search from thousands of results down to a screenful, and it is the single most useful filter there is.
Not the exact date, just the neighbourhood. Last week, some time in March, before the end of the financial year. A date range does not need to be right, it only needs to be generous enough to contain the answer.
When you are hunting for a file rather than a conversation, this one filter throws away nearly everything you do not want. Especially good for the annual quest to find the signed copy of something.
Every version of Outlook has these, but they live in slightly different places and Microsoft moves them about, so it is worth learning what to look for rather than a click path. Once you have clicked into the search box, look for a filter icon or a small arrow at the end of the box. That opens the panel with fields for the sender, the subject, a date range and an attachments option.
- Put an exact phrase in quotation marks when you know the wording, it stops the near misses
- Check the scope. Searching one folder when you meant the whole mailbox is the usual reason a search comes back empty
- Search finds what is around you: from your mailbox you get email, and files live in the search covered by the next module
Filing every message into a hand-built folder tree made complete sense when search was hopeless. It has not been hopeless for years. If you can find any message in about eight seconds with a sender and a rough date, the twenty minutes a week you spend filing is buying you very little. Keep the folders that carry real meaning, let the rest of it pile up in one place, and let search do the finding.
Your calendar is not a record of what other people have decided to do with your week, even though it can feel that way by Wednesday. It is a public statement of when you are available, and almost everyone publishes something less accurate than they mean to.
The root of it is simple. White space on a calendar reads as free, and to the person hunting for a meeting slot, that is exactly what it means. If the work you need to do quietly is not written down anywhere, it does not exist, and the gap where it was going to happen gets filled by someone else within the hour.
- Answer every invitation, even the ones you are not going to attend
- Decline with one line of explanation, so nobody has to guess or chase you
- Use propose a new time when the clash is the problem and not the meeting
- Book your own focused work in as a real appointment, with a real name
- Leaving invitations sitting unanswered for days, which leaves the organiser stuck
- Accepting everything because declining feels rude, then attending none of it
- Treating empty space on your calendar as proof you are free
- Blocking out whole weeks with a mystery appointment called "busy"
Declining is not rejection, it is information, and it is far kinder than accepting and then not turning up. An invitation gives you more than yes and no: there is a tentative option for when you genuinely might make it, and a propose new time option that hands the organiser a workable alternative instead of a problem. One line is plenty. "Can't make this one, happy to read the notes" tells the organiser everything they need, and it takes eight seconds.
Your working hours and time zone. These are what everyone else sees when they go looking for a slot in your week, and when they are wrong the meetings turn up in the wrong places. If you finish at three on Fridays, or you work Tuesday to Saturday, say so in the calendar settings once and it quietly protects you forever.
How your booked time shows. When you block out an afternoon for real work, the appointment can show you as busy, tentative, out of office or free. Set it to busy, or the block is decoration. Give it a proper name too, because "quoting for the Fremantle job" gets respected in a way that "blocked" never does.
Some Microsoft 365 plans include Viva Insights, which will book focus time into the gaps in your week for you. While a focus block is running it sets your status to focusing and quietens notifications, so the protection is real rather than symbolic. Worth asking whether you have it. If you do not, doing the same thing by hand with a recurring appointment works nearly as well.
Nearly every small business has one of these. A mailbox that several people need to work out of, usually accounts@ or info@ or bookings@, and one password that everybody knows. It is in the top drawer, or a group chat, or a spreadsheet, and it has not changed since 2019.
This is worth being blunt about, because it is the one habit in this module that can genuinely hurt the business. Sharing a password is never the right way to share a mailbox, and it has not been necessary for a very long time. Microsoft 365 has a proper answer built in, it is free, and it takes your IT person a few minutes to set up.
- Nobody can tell who sent what, because every message came from the same login
- Multi-factor authentication either gets switched off or ends up on one person's phone
- Every time someone leaves, the password has to change and be handed round again
- A shared password is exactly the sort of thing that ends up in a group chat, on a whiteboard, or in a spreadsheet called passwords
The accounts mailbox is also the single mailbox criminals most want, because it is where invoices and bank details live. A shared password with no multi-factor authentication on it is the front door left on the latch, on the room with the money in it.
A shared mailbox
This is the built-in answer, and the important detail is that a shared mailbox has no username and password of its own. Nobody signs into it, because there is nothing to sign into. Instead, each person is granted access to it, and it simply appears in their Outlook next to their own mailbox once they sign in as themselves.
- Full access lets someone read and manage the mailbox, but not send from it
- Send as makes a reply look like it came from the mailbox itself
- Send on behalf shows both names, as in Jane on behalf of Accounts
- Access is granted and removed per person, so leavers are handled in seconds
Delegate access to your own mailbox and calendar
If someone manages your diary or covers your mail, delegate access is how that is meant to work. A delegate can be given permission to read, to write, and to receive and answer meeting requests on your behalf. Only people inside your own organisation can be delegates, which is a sensible limit rather than an annoyance.
- You choose the level, and you can take it back at any time
- Meeting requests can be routed to the delegate so nothing is missed
- Everything a delegate sends is still traceable to them, which protects you both
- Private items stay private unless you specifically allow them
Calendar sharing, at the level you actually meant
Sharing a calendar is not one setting, it is a dial. You can let people see only whether you are free or busy, or the titles and locations, or all the details of non-private events, or give them permission to edit. Most people share far more than they intended because they never noticed the dial existed.
- Free and busy only is plenty for the whole business to see
- Full details suits the two or three people who really need it
- Edit rights belong with whoever books on your behalf, and nobody else
This is the same rule that runs through everything on the security side of our Learn pathways, and it is worth carrying with you. Every person gets their own account with their own multi-factor authentication, and everything else they need is granted to that account. Nothing gets shared by handing over credentials. It is better security, it is a clean trail of who did what, and it is genuinely less hassle than the sticky note.
You do not need to know how any of this is configured. Walk up to whoever looks after your IT and say: "Can we turn accounts@ into a proper shared mailbox and give the three of us access, so we can stop sharing the password?" That sentence is the whole job. They will know exactly what you mean, and they will be delighted you asked.
- Microsoft Learn: Shared mailboxes in Exchange Online
- Microsoft Learn: Create a shared mailbox, and which permissions to use
- Microsoft Learn: Manage permissions for recipients in Exchange Online
- Microsoft Learn: Share or delegate a calendar in Outlook
- Microsoft Support: Learn to narrow your search criteria for better searches in Outlook
- Microsoft Learn: Book focus time with Viva Insights
- Microsoft Learn: Inbox rule in Outlook on the web does not appear in Outlook for Windows
Details were current at the time of writing (August 2026). There are two versions of Outlook in circulation and Microsoft moves menus around regularly, so where the exact wording of a button matters we have said what to look for as well as where it currently sits. The links above are always the freshest word.
Knowledge check
5 quick questions. Get 4 right and the module is yours.
1. Three of you need to work out of the accounts@ mailbox. What is the right way to set that up?
2. You are hunting for an email with a quote attached, from a supplier, some time around March. What finds it fastest?
3. What is the honest risk of setting up a lot of mail rules?
4. A meeting invitation lands for a time that genuinely does not work. Best move?
5. Why does blocking out time for focused work only half work for most people?