How to Propose a New Time in Outlook (and Why It's Missing)

A meeting invite lands for the one hour you're already booked. You could decline and start an email chain about alternatives, but Outlook has a tidier way: propose a new time from the invite itself, and the organiser can accept it with a click. It's one of those features people don't use because they don't know it's there, or because it's mysteriously missing. Here's how it works and why it sometimes isn't available.

Propose a new time in new Outlook

1. Double-click the meeting invitation to open it.
2. Select Propose new time.
3. Choose I might attend or No, I won't attend.
4. Pick a different time slot, then select Done.
5. Add a short message if you like, then select Send.

Propose a new time in classic Outlook

1. Open the meeting request.
2. Select Propose New Time, then choose Tentative and Propose New Time or Decline and Propose New Time.
3. In the window that opens, choose the new time.
4. Select Propose Time. Outlook opens a reply with New Time Proposed in the subject.
5. Select Send.

Why the option might be missing

Reason	What's going on
You use a personal account	Microsoft says it's for work or school accounts only; Outlook.com, Hotmail, Live and MSN addresses aren't supported
You use an IMAP or POP account	Accounts from other providers aren't supported
It's a recurring meeting	You can't propose a new time for a recurring series
The organiser blocked it	Organisers can send invites that don't allow proposals

That first row is the big one. If you're on a personal email account, the feature simply isn't there, and the polite alternative is to reply to the invite with a couple of times that suit you.

Tentative or decline: which to choose

Pick tentative if you could make the original time at a push, and decline if you can't. Tentative keeps the slot in your calendar while you wait for an answer; decline tells the organiser clearly that the original time is a no. I lean towards tentative for clients, because it reads as "I'm trying to make this work" rather than "no".

If you're the organiser: accept or decline a proposal

1. Double-click the proposal to open it. Microsoft notes you can't accept a proposal from the reading pane.
2. Select Accept Proposal, or View All Proposals if several people suggested times.
3. If you accept, choose Send Update so everyone's calendar changes.
4. To decline the proposal, select Delete.

Write a helpful note with your proposal

The time alone can feel abrupt. A short line makes all the difference: "I'm on a client call at two, could we do four instead? Happy to work around you if that doesn't suit." It keeps things friendly and gives the organiser a reason, which makes them far more likely to accept.

Recurring meetings: what to do instead

Because you can't propose a new time for a recurring series, the best option is to email the organiser and ask whether the series could move, or whether you can skip one occurrence. If it's just one week that clashes, accept the series and decline that single occurrence with a note.

What the organiser sees

When you propose a new time, the organiser receives a message with your suggestion, and in classic Outlook the subject says New Time Proposed. They can see the original time alongside yours, and if several attendees suggest times, they can view all the proposals together before deciding. Nothing changes in anyone's calendar until the organiser accepts and sends an update, so you're never moving a meeting on everyone else's behalf.

Check your calendar before you propose

Before suggesting a new slot, look at your own calendar for the week and pick a time you can definitely do. Proposing a time and then having to move it again looks disorganised. If you can, offer a second option in your note, so the organiser has a choice without another round of emails. Think about time zones too if the organiser is abroad: a slot that suits your afternoon might be their evening, and a thoughtful suggestion that works for both of you gets accepted far faster.

When a quick message is better

For meetings with lots of attendees, proposing a new time can create a mess of competing suggestions. In that case, a message to the organiser saying when you're free is kinder. And if you regularly set up meetings with groups, it's worth using a tool that lets everyone vote on times before the invite goes out. If meetings eat your week, my thoughts on the AI meeting notetaker problem are worth a read, and my email sequence prompt pack helps you write the follow-ups.

My verdict

Open the invite, choose Propose new time, pick tentative or decline, select a new slot and send it with a friendly note. If the button's missing, you're probably on a personal account, the meeting's recurring, or the organiser turned proposals off, so reply with a couple of times instead.

Frequently asked questions

How do I propose a new meeting time in Outlook?

Open the invite, select Propose new time, choose tentative or decline, pick a new time and send.

Why can't I propose a new time in Outlook?

It's only for work or school accounts, not recurring meetings, and organisers can turn it off.

Can I propose a new time with an Outlook.com account?

No. Microsoft says Outlook.com, Hotmail, Live and MSN accounts aren't supported.

How does the organiser accept a proposed time?

They open the proposal, select Accept Proposal and then Send Update.

Can I propose a new time for a recurring meeting?

No. Email the organiser instead, or decline the single occurrence that clashes.