Almost every guide on this gives the same instruction: list three to five times and let the other person pick. The advice works, and it quietly assumes three things at once. That you are writing to one person. That you both read a clock the same way. And that they will answer before those slots fill. Break any one of those assumptions and a list of times produces more email than it saves. So pick the format first, then paste the template. This guide sorts five formats by the assumption each one survives.
Takeaway. Choose the format before you write the sentence. One recipient in your timezone gets named slots; five recipients get a link or a poll.
Three to five slots is the ceiling, not the target. Two well-chosen options get a faster reply than six, because six reads as a scheduling task rather than a question.
Every time needs a date, a weekday, a duration, and a timezone. "Tuesday at 2" is the single most common reason an availability email needs a second round.
Slots expire, so say when. Adding "these hold until Thursday noon" turns a stale list into a live one and gives the reader a reason to answer today.
A booking link is not automatically the faster option. Sent cold with no context around it, a link can cost you the reply it was meant to save, so the hybrid format is the safer default for first contact.
Why "list three times" stops working
The standard advice is built for a narrow case: you, one recipient, one timezone, a same-day reply. Most availability emails miss at least one of those conditions.
You are writing to more than one person. The slots you promised the first recipient are still promised to the second. A 70-comment thread in r/ExecutiveAssistants works through exactly this problem, where the same three times went out to several people and the assistant had to manage what happened when two of them answered. Manual slot lists have no locking mechanism, which is the whole issue.
You are writing across timezones. A bare "Tuesday at 2" forces the reader to guess your offset, then convert. Half of them convert wrong and the other half do not bother, which is why the scheduling problems remote teams hit across time zones start in the invitation rather than the meeting.
They are going to answer on Thursday. By then two of your three slots are booked, you send a correction, and the thread restarts. The list was accurate when you wrote it and fiction by the time it was read.
The obvious counter-move is to skip the list and send a scheduling link. That trades one failure mode for another. In a 90-comment r/sales thread, a B2B SaaS founder describes noticing that conversations tended to die after a link went out over email, and the replies argue both sides of it. Neither pure format wins. The situation decides.
Which format fits your situation
| Your situation | Format to use | Why it holds |
|---|---|---|
One recipient, shared timezone, they outrank you | Named slots | Doing the work for them signals deference, and there is no locking problem with one reader |
Your situationOne recipient, shared timezone, they outrank you Format to useNamed slots Why it holdsDoing the work for them signals deference, and there is no locking problem with one reader | ||
One recipient, your calendar is mostly open | A window | Naming specific slots when you have forty free hours reads as false scarcity |
Your situationOne recipient, your calendar is mostly open Format to useA window Why it holdsNaming specific slots when you have forty free hours reads as false scarcity | ||
Cold outreach or a first contact | Slots plus a link | The slots carry the courtesy, the link carries the fallback if they read it late |
Your situationCold outreach or a first contact Format to useSlots plus a link Why it holdsThe slots carry the courtesy, the link carries the fallback if they read it late | ||
They asked to meet you, or the request is inbound | A link on its own | They already opted in, so the extra sentence adds friction |
Your situationThey asked to meet you, or the request is inbound Format to useA link on its own Why it holdsThey already opted in, so the extra sentence adds friction | ||
Three or more attendees | A poll or a shared link | Manual slots cannot lock, and the reconciliation lands on you |
Your situationThree or more attendees Format to useA poll or a shared link Why it holdsManual slots cannot lock, and the reconciliation lands on you | ||
Two rules cut across all five. Offer fewer options than you think you should, and put a shelf life on whatever you offer.
The five formats
Format 1: Named slots
The default for a single recipient in your timezone, and the right call when the other person's time is worth more than yours: a candidate emailing a hiring manager, a supplier emailing a client, anyone following up on a request they made.
Give two or three options across different days and different parts of the day, so a "none of these work" reply is genuinely about availability rather than about the fact that you offered three consecutive Tuesday mornings.
Subject: Times for our 30-min call
Hi Jordan,
Happy to walk through the onboarding plan. Any of these work on my end,
all 30 minutes:
• Tue 16 Sep, 10:00–10:30 (CEST / UTC+2)
• Wed 17 Sep, 15:00–15:30 (CEST / UTC+2)
• Thu 18 Sep, 09:00–09:30 (CEST / UTC+2)
I'm holding all three until Wednesday noon. If none fit, send me two
that do and I'll make one work.
Best,
Sam
The last line matters more than the list. It hands the reader a second move that is not "reply with nothing".
Format 2: The window
When your calendar is genuinely open, naming three slots invents a scarcity the reader can see through. State the shape of your week and let them choose inside it. This is the format for the interview availability case where a recruiter has asked when you are free and the honest answer is "most of the time".
Subject: Availability this week and next
Hi Priya,
I'm free most afternoons, 13:00–17:00 UK time, Monday through Thursday,
this week and next. The exceptions are Tue 16th after 15:00 and all day
Fri 19th.
Send whatever suits you and I'll confirm within the hour.
Best,
Alex
Naming the exceptions is what makes a window credible. A window with no carve-outs reads as "I have nothing on", which is a different message than you want to send.
Format 3: Slots plus a link
The working default for cold outreach and first contact. The named slots do the social work, and the link handles the case where they read the email three days later. You get the courtesy of a human suggestion and the durability of a live calendar, which is why this hybrid outperforms either half on its own.
Subject: 20 minutes on your Q4 reporting?
Hi Lena,
You mentioned the month-end close is eating three days. I'd like 20
minutes to show you how two of our customers cut that to one.
• Mon 22 Sep, 11:00–11:20 (CEST)
• Wed 24 Sep, 16:00–16:20 (CEST)
If neither works or you're reading this later in the week, here's my
live calendar and everything on it is bookable: [link]
Best,
Sam
Two things make the hybrid work rather than read as a hedge. Put the slots above the link, so the reader meets a human suggestion first. And describe what the link is instead of pasting a bare URL, because a scheduling link with no framing is the version people react badly to.
Format 4: Asking for their availability
Half the time you are not sending your times, you are trying to get theirs, and "let me know your availability" is the phrasing that gets ignored. It asks the reader to open a calendar, scan it, and compose a list, which is real work with no deadline attached.
Anchor the ask instead. Give a range and a decision, so replying is a matter of picking rather than drafting.
Subject: 30 mins next week to review the contract?
Hi Marc,
Could we take 30 minutes next week to go through the redlines?
I'm open Tue–Thu, 09:00–16:00 (CET). If you send me the two or three
windows that work on your side, I'll put something in and send the
invite.
If it's easier, my calendar is here and anything you see is free: [link]
Best,
Nina
The difference between this and "let me know your availability" is that the reader now has a bounded question. More ways to frame the ask are in the guide to writing a meeting request email.
Format 5: Three or more people
Stop writing slots by hand. With three attendees you are running a small reconciliation problem in your inbox, and every reply changes the answer for everyone else. Use a scheduling poll where each person marks what works, or a shared booking link where taking a slot removes it for the next reader.
If you are set on doing it in email, send the poll link with a deadline and a fallback time you will default to if the poll stalls. Comparison notes on the free options are in the write-ups of When2meet and free Doodle polls.
Write the times so nobody has to decode them
Most second rounds are caused by formatting, not by availability. A time slot is unambiguous only when it carries all four pieces.
Before you send an availability email
Tip: When you know the recipient's timezone, write your time first and theirs in brackets: Tue 16 Sep, 15:00 CEST (09:00 EDT). It removes the conversion and it shows you checked.What the tools actually do here
Three levels of help exist, and most people stop at the first.
Native calendar inserts. Outlook and Gmail both paste your free times into a message body as text. Outlook's version lives behind the Calendar button in the compose window, and the Outlook scheduling assistant covers the internal case where you can see colleagues' calendars directly. In Google Calendar, the equivalent move once a meeting exists is to propose a new time rather than restart the thread. Both produce plain text, which means the slots are a snapshot and go stale exactly like a hand-typed list.
A personal booking link. meetergo is a scheduling and revenue-pipeline tool built in Cologne, and the piece relevant here is the personal booking link that reads your real calendar. Slots disappear the moment one is taken, timezones convert for whoever opens the page, and there is a free plan, so the hybrid format above does not need a paid tool to work.
Two settings do most of the work before you send anything. Working hours and buffers stop the link from offering a 07:30 slot or three back-to-back calls. Blocked days keep the week you are on holiday off the page. Once a slot is taken, automatic confirmation and reminder emails close the loop without another message from you.
Letting software answer the email. Mira handles email-based scheduling directly in the thread, which is the level worth reaching for when you are running more than a handful of these a week. For recurring internal sessions, multi-booking covers the case where one invitation needs several slots at once.
One honest limitation: a booking link is a page, not a paragraph. If your recipient is the kind of reader who will not click anything, the link does nothing for you, and the named-slots format in Format 1 remains the only thing that works. That is a real segment, not an edge case, which is why every format above still starts with written-out times.
Send times that are still true tomorrow.
Send times that are still true tomorrow.
Five mistakes that restart the loop
- Offering six slots. More options read as a scheduling task rather than a question, and they raise the odds two of them go stale before a reply lands. Two or three is the working range.
- Sending the same slots to several people. This is the scheduling conflict you create for yourself. If the same times are going to more than one inbox, send a link that locks instead.
- Writing "Tuesday at 2". No date, no duration, no timezone. Even inside one office it survives only until someone reads it on Wednesday.
- Pasting a bare link with no sentence. The link is fine; the missing context is what reads as dismissive. One line naming what it is and how long the meeting runs fixes most of the reaction described in the r/sales thread above.
- Leaving no fallback. If none of your slots work and you have not said what to do next, the reader has to invent the next step. Many of them will invent nothing. The same principle applies when you are on the receiving end and need to reschedule an appointment or respond to a cancellation.
FAQ
How many time slots should I offer in an email?
Two or three. Three is the ceiling for a single recipient and two is often faster, because a short list reads as a question while a long one reads as homework. Spread them across different days and different parts of the day so a rejection tells you something useful about their week.
What is a better phrase than "let me know your availability"?
Give a bounded range and a next step: "I'm open Tuesday to Thursday, 09:00 to 16:00 CET. Send me two windows that work and I'll put the invite in." It converts an open-ended drafting task into a pick-one, which is the reason it gets answered faster.
Should I send a booking link or write out the times?
Write times when the recipient outranks you, when it is a first contact, or when they are unlikely to click. Send a link when they asked for the meeting, when more than one person needs a slot, or when a reply may take days. For cold outreach, send both, with the times above the link.
How do I write availability across time zones?
Put the timezone abbreviation and the UTC offset on every slot, like "15:00 CEST (UTC+2)". When you know where the recipient sits, add their local time in brackets. Never write a bare hour and never assume a shared offset, since that is the most common cause of a second email.
Is it rude to send a scheduling link?
Not on its own. The reaction people describe is usually to a bare URL with no context, not to the link itself. Naming what the link is, how long the meeting runs, and what happens if none of the times fit removes almost all of it. The wider conventions are in the guide to virtual meeting etiquette.
