How to schedule an email
To schedule an email, start composing, then — instead of clicking Send — click the arrow or clock next to the Send button, choose "Schedule send" (or "Send later"), and pick a date and time. The message waits in a pending state and goes out automatically at the moment you set. The exact control varies by app: a dropdown arrow in Gmail and new Outlook, "Delay Delivery" in classic Outlook, and a clock icon in Mailbird.
Scheduling — also called Send Later or delayed delivery — exists to solve two everyday problems:
- Timing. You're writing at 11pm but it should land at 9am; you're ahead of a client's time zone; a reminder should go out next Monday.
- A safety buffer. A short delay before a message truly sends is a window to catch a typo, the wrong recipient, or a missing attachment — before it's gone.
Below: how scheduling works under the hood, the exact steps per provider, the question everyone asks ("will it send if my computer is off?"), how to handle recurring sends, the best times to schedule, and how Mailbird gives you one Send Later workflow across every account.
How scheduled sending actually works
"Schedule send" looks like one feature, but there are two mechanisms underneath — and the difference decides whether your message goes out while your computer is asleep.
Server-side scheduling
The message is held on the mail provider's servers and released at the scheduled time. Because the provider sends it, delivery happens whether or not your device is on. Gmail, new Outlook, and Outlook on the web all schedule this way — Gmail parks it in a Scheduled folder until send time.
Client-side (delay) scheduling
The message is held by your email app on your own device and released when the app is running at the scheduled time. Classic Outlook's Do not deliver before and Mailbird's Send Later both work this way — so the app needs to be open and online when the clock strikes.
Neither is "better" — server-side is hands-off, client-side keeps the message on your machine until it sends. What matters is knowing which one you're relying on, so an important 9am email doesn't sit waiting because an app was closed.
How to schedule an email, by provider
The control and the mechanism differ by app and account type. Step-by-step guides are linked in the last column.
| App | Where to schedule | Mechanism | Sends if device is off? | Guide |
|---|---|---|---|---|
| Gmail | Arrow next to Send → Schedule send | Server-side | Yes | Gmail guide |
| New Outlook / Outlook on the web | Arrow next to Send → Schedule send | Server-side | Yes | Outlook guide |
| Classic Outlook (Windows) | Options → Delay Delivery → Do not deliver before | Client-side | No — needs Outlook open | Outlook guide |
| Outlook for Mac | Send dropdown → Send Later | Server-side (M365) | Yes (M365 accounts) | Outlook guide |
| Mailbird (Windows & Mac) | Clock icon next to Send → preset or Pick date & time | Client-side | No — sends when Mailbird is next running & online | Built in |
If Schedule send is missing in new Outlook or Outlook for Mac, it's almost always because the account is IMAP or POP rather than a Microsoft 365 mailbox — the feature is gated to M365 there. A desktop client that schedules across account types avoids that gap.
Will a scheduled email send if my computer is off?
It depends on the mechanism, not the app's marketing. This is the single most common scheduling question, and the honest answer is:
- Server-side (Gmail, new Outlook, Outlook on the web, Outlook for Mac on M365) — yes. The provider's servers do the sending, so the message goes out at the scheduled time even with your device off and you logged out.
- Client-side (classic Outlook's Delay Delivery, Mailbird's Send Later) — no. The app must be open and online at send time. If it isn't, the message sends the next time the app is running with a connection.
If guaranteed hands-off delivery at an exact minute is critical — say, an announcement that must go at 8:00am sharp regardless of your laptop — use a server-side route (Gmail or new Outlook) for that message. If you keep your client running on a machine that stays awake, client-side scheduling is reliable and keeps the message on your own device until it sends. Note that even server-side scheduling delivers as close as possible to the set time, not to the guaranteed second.
Can you schedule recurring emails?
Not natively in most email apps. Gmail's and Outlook's built-in Schedule send handle a single future send — there's no "every Thursday at 9am" toggle. To make an identical email repeat on a schedule, you have a few routes:
- Automation platforms. Microsoft Power Automate can send a templated message on a recurring schedule from an Outlook/M365 account — the most common no-third-party route for Outlook users.
- Dedicated tools. Email automation and mail-merge services offer recurring campaigns, though they're built for bulk/marketing more than personal mail.
- A manual rhythm. For a light cadence, many people simply schedule the next one each time they send — quick when it's a weekly note to one recipient.
If recurring sends are central to your workflow, match the tool to the job: an automation platform for true "set and forget," or one-at-a-time scheduling for occasional repeats.
The best times to schedule an email
Scheduling only pays off if you send at a moment the recipient will actually see — and act on — the message. A few field-tested rules:
- Land mid-morning, not at the top of the hour. Aim for a few minutes before or after the hour (e.g. 8:55 or 9:05); inboxes flood exactly on the hour as meetings end, and a message a beat off the rush stands out.
- Send into the recipient's local morning. Use scheduling to convert your late-night draft into their 9am — especially across time zones, where "now" for you is the middle of their night.
- Avoid Friday afternoons. Messages sent as people mentally clock out for the weekend are the most likely to be buried by Monday.
- Respect off-hours. Drafting at 11pm or on a weekend is fine — scheduling it for the next business morning avoids setting an always-on expectation with colleagues and clients.
The goal isn't to game an algorithm; it's to arrive when a human has the attention to respond.
Scheduling vs. recalling: prevention beats the cure
When people scramble to recall an email in Outlook, what they usually needed was a few seconds before it left. The two features solve the same anxiety from opposite ends:
- Recall tries to claw a message back after it's sent. It works only inside the same Microsoft 365 organization, both sides must use supported Outlook, and it frequently fails — the recipient may already have read it. See what recall actually does.
- Scheduling / delayed send holds the message before it leaves, so you can edit or cancel it with no dependency on the recipient's setup. There's nothing to claw back because it never went out.
For anything you might regret, a short Send Later delay is the dependable safeguard; recall is the unreliable fallback for when you didn't have one.
How Mailbird's Send Later works
Mailbird builds scheduling into the compose window, so the workflow is identical across every account you connect — Gmail, Outlook.com, Microsoft 365, and other IMAP/SMTP mailboxes — instead of leaving you to remember each provider's quirks.
- One consistent control. When you compose, reply, or forward, a clock icon sits next to Send. Click it and choose Tomorrow morning, Tomorrow afternoon, Monday morning, or Pick date & time for a custom slot — the same steps on every account.
- No account-type gaps. You're not locked out because a mailbox is IMAP or POP, the way native Schedule send can be.
- A built-in buffer. Scheduling even a few minutes out gives you a window to fix a mistake before the message truly leaves.
- Cross-platform. The same Send Later flow on both Windows and macOS.
The honest requirement: Mailbird's Send Later is client-side, so Mailbird needs to be open and online at the scheduled time. If it isn't, the message goes out the next time Mailbird is running with a connection. That trade keeps your scheduled mail on your own machine — and if you need send-while-off for a specific message, a server-side route like Gmail is there for it. For most people keeping their client open through the workday, one predictable scheduling workflow across all inboxes is the win.
Getting started
Pick the route that matches where you send from — or set up one workflow across all of them:
- How to schedule an email in Outlook — new Outlook, classic Delay Delivery, web, and Mac.
- How to schedule an email in Gmail — the Schedule send route and the Scheduled folder.
- How to recall an email in Outlook — and why scheduling is the better safeguard.
With Mailbird, Send Later is built in — connect your accounts and schedule from one place, the same way every time.
Schedule send FAQ
How do I schedule an email to send later?
Compose your message, then click the arrow or clock next to the Send button instead of Send itself, choose Schedule send (or Send later), and pick a date and time. See the Outlook and Gmail guides for exact steps.
Will a scheduled email send if my computer is off?
Only if it's scheduled server-side. Gmail, new Outlook, and Outlook on the web send from the provider's servers, so the email goes out with your device off. Client-side scheduling — classic Outlook's Delay Delivery and Mailbird's Send Later — needs the app open and online at send time.
Can I cancel or edit a scheduled email before it sends?
Yes. Because the message hasn't left, you can open it from the pending/Scheduled/Outbox location, change the content or recipients, or cancel it entirely — the main advantage scheduling has over trying to recall a sent message.
Can I schedule recurring emails?
Not natively — Gmail and Outlook schedule a single future send, not a repeating one. For true recurring sends, use an automation platform like Microsoft Power Automate or a dedicated email tool; for occasional repeats, schedule the next one each time you send.
What's the best time to schedule an email?
Aim for the recipient's mid-morning, a few minutes off the top of the hour, and avoid Friday afternoons. Across time zones, schedule into their local morning rather than sending at your own late-night hour.
Why is "Schedule send" missing in Outlook or Outlook for Mac?
In new Outlook and Outlook for Mac, Schedule send is gated to Microsoft 365 accounts and unavailable for IMAP/POP mailboxes. Use classic Outlook's Delay Delivery, Outlook on the web, or a desktop client that schedules across account types.
Is scheduling an email better than recalling one?
For preventing mistakes, yes. Recall only works in narrow conditions and often fails; a short scheduled delay lets you fix or cancel a message with no dependency on the recipient. See what recall actually does.
Does Mailbird have a Send Later feature?
Yes. In the compose window, click the clock next to Send and choose a preset or a custom date and time — the same way across every connected account on Windows and Mac. Mailbird must be open and online at the scheduled time (it's client-side); otherwise the message sends the next time Mailbird is running.
