How many cold emails can I send per day?
Once a mailbox is warmed up, send 30-50 cold emails per day from it — 50 is the default WarmySender sets, and it is the number to grow into, not to start at. A brand-new sending domain is held to 200 emails per day in total across every mailbox on it (warmup included) until it is at least 30 days old with 200 emails behind it and no spam complaints; after that the ceiling lifts to 2,000 a day. Warmup itself starts at one email a day and reaches full speed around your sixth week of sending. When you need more volume, add mailboxes — never push a single mailbox higher.
If you have read a different number on another page — "200+ a day", "start at 5 and double every week" — this page is the one that is right. The table below is the canonical answer, and every figure in the "What WarmySender enforces" column is the number the product actually applies to your account.
The canonical table: safe volume by domain and mailbox age
"Week" here means a week of sending days, not a week on the calendar. Warmup only advances on days your mailbox actually sends, so a mailbox that spent three days disconnected is three days behind where the calendar says it is.
| Sending week | Warmup, per mailbox per day (automatic) | Cold emails, per mailbox per day (our recommendation) | Ceiling across the whole domain (enforced) |
|---|---|---|---|
| Week 1 (sending days 1-7) | 1 rising to 7 | None yet — let warmup establish the mailbox | 200 per day, warmup included |
| Week 2 (days 8-14) | 9 rising to 15 | None yet | 200 per day, warmup included |
| Week 3 (days 15-21) | 15 rising to 21 | Up to about 10 | 200 per day, warmup included |
| Weeks 4-5 (days 22-35) | 23 rising to 35 | About 15, then about 25 | 200 per day until the domain turns 30 days old, then 2,000 |
| Week 6 onward (day 36+) | 40 — full speed for a new domain | 30-50 — steady state. 50 is the default. | 2,000 per day once the domain qualifies |
| After six months and 10,000 sends | 40, or up to 120 if the mailbox has earned it | Still 30-50 per mailbox — add mailboxes for more volume | 10,000 per day, on request and by review |
Read the last two columns differently. The domain ceiling is a hard limit the platform applies — go over it and sending simply waits. The cold-email column is our recommendation, and the platform does not stop you exceeding it: your per-mailbox daily limit is yours to set anywhere from 1 to 500. That is deliberate, and it is also why this page exists. Nothing in the product forces you to warm up before you send cold, so the discipline has to come from you.
Why does warmup start at a single email a day?
Because a brand-new domain has no history, and the fastest way to look like a spammer is to appear from nowhere at volume. WarmySender starts a new domain at one warmup email a day and steps it up roughly one more email per day, so the curve reads as a real mailbox slowly coming into use.
By the end of week 1 you are around 7 a day, week 2 around 15, week 3 around 21, and full speed — 40 a day for a new domain — lands around week 6. A mailbox on an established domain starts a little higher and can go to 60. A mailbox in steady maintenance sits around 30, which is enough to keep reputation warm without competing with your real campaigns for the domain's daily budget.
You will sometimes see advice to "start at 5 and double every week". Do not. Google explicitly warns that suddenly doubling the volume you previously sent can cost you rate limiting and reputation, so doubling is the one shape you should avoid. Steady single-digit increments are the whole point.
The full explanation of the curve, including what changes it: How warmup ramps up.
What actually limits how much you can send?
Four separate ceilings apply, and the lowest one wins on any given day. Most people who think their campaign is broken have simply hit one of these:
- Your per-mailbox daily limit. Set to 50 by default, adjustable from 1 to 500 per mailbox. This covers cold campaign emails only.
- Your per-mailbox total. Warmup and cold share one per-mailbox budget, so a mailbox running 40 warmup emails has 40 fewer to spend on campaigns. The total sits between 200 and 500 a day depending on your plan.
- Your domain's daily ceiling. 200 a day for a new domain, 2,000 once it qualifies, 10,000 by review. This is shared by every mailbox on that domain, and it is the one that surprises people who add ten mailboxes to a two-week-old domain and wonder why volume did not go up.
- Your plan's daily allowance. A workspace-wide cap on campaign sending.
The practical consequence: on a new domain, ten mailboxes do not give you ten times the volume. They give you the same 200 a day, split ten ways. Mailboxes multiply your capacity only once the domain itself has earned a higher ceiling.
How do I safely send more than 50 a day?
By adding mailboxes and domains, in that order, not by raising one mailbox's limit. A single mailbox sending 200 a day is a far riskier signal than four mailboxes sending 50 each, because per-mailbox volume is one of the patterns providers watch most closely.
- Add mailboxes on the domain you already have, once that domain has passed 30 days and 200 sends and its ceiling has lifted to 2,000. Four mailboxes at 50 a day is 200 a day, comfortably inside it.
- Add a second sending domain when you need more than the 2,000. Each domain carries its own ceiling and its own reputation, so a problem on one does not take the other down with it. Warm each new domain from scratch — the six-week clock starts again.
- Ask about the highest tier only when a domain is past six months and 10,000 sends with a clean record. It is granted by review, not by a setting.
Volume is also worth spending well: verifying your list before you send is the single change that most reliably raises the share of your daily budget that reaches a real person.
What do Google, Microsoft and Yahoo actually require?
Less than the internet claims, and none of them publishes a day-by-day ramp schedule. What they do publish:
- Every sender, at any volume, needs valid authentication on the sending domain, a matching reverse lookup on the sending address, properly formed messages, and a spam-complaint rate under 0.3%.
- Google asks senders to keep the spam rate below 0.1% and to never reach 0.3%. Its extra bulk-sender requirements — full authentication plus a one-click unsubscribe — apply once you send more than 5,000 messages a day to personal Gmail addresses. Mail to Google Workspace business addresses does not count toward that number, which is why most cold-email programmes never cross it.
- Microsoft applies the same 5,000-a-day threshold to its consumer inboxes and rejects mail from domains that fail authentication above it. It also asks senders not to exceed about 30 messages a minute from one mailbox, and applies reduced quotas to accounts less than two months old.
- Yahoo deliberately publishes no volume threshold at all and asks only that the spam rate stay below 0.3%, measured against mail that reached the inbox. The "Yahoo caps you at 5,000" line you will find in vendor blogs is a Google rule wearing a Yahoo label.
Notice what is not on that list: a required warmup period, a required health score, a required number of days before your first campaign. Those are industry conventions, and useful ones, but no provider mandates them. Anyone showing you a "day 1: 5 emails, day 2: 8 emails" table sourced to Google is showing you something Google never published.
For the complaint side of this, see what a high spam rate actually means.
Common questions
Can I really send 200 emails a day from one mailbox?
No, and you should treat any source that says so as wrong. On a new domain, 200 a day is the ceiling for the entire domain including warmup, not for one mailbox. Even on an established domain, one mailbox's combined warmup-and-cold budget tops out between 200 and 500 a day depending on your plan, and sending anywhere near that from a single address is the volume pattern most likely to get you filtered. The right answer for one mailbox is 30-50 cold emails a day. If you need 200, use four or five mailboxes.
Do I have to finish warmup before I start a campaign?
Nothing in WarmySender blocks you — you can launch a campaign on day one if you want to. We recommend waiting until warmup has run about three weeks of sending days before you send your first cold email, and keeping warmup running permanently afterwards. That is guidance based on how reputation builds, not a rule the product enforces, and we would rather tell you that plainly than pretend there is a gate where there is not one.
How long does warmup take to reach full speed?
About six weeks of sending days for a new domain, arriving at 40 warmup emails a day. Sending days are what count: warmup only advances on days the mailbox actually sends, so a mailbox that could not connect for a week is a week behind the calendar. A mailbox on an already-established domain starts higher and can reach 60 a day.
Why did adding more mailboxes not increase my volume?
Almost always because the ceiling that is binding you is your domain's, not your mailboxes'. A domain under 30 days old is held to 200 emails a day in total, however many mailboxes sit on it — so adding a fifth mailbox just splits the same 200 five ways. Once the domain passes 30 days and 200 sends with no spam complaints, the ceiling lifts to 2,000 and extra mailboxes start paying off. See also why adding sending days did not increase volume.
What is a safe daily limit to set on a new mailbox?
Leave it at the default of 50 and let the recommendation in the table above govern how much you actually enrol. The per-mailbox limit is a ceiling, not a target — setting it to 50 does not mean 50 go out, it means no more than 50 can. Raising it above 50 buys you nothing on a young domain, because the domain-wide ceiling will stop you first.
Does sending fewer emails actually improve deliverability?
Sending fewer bad emails does. Providers judge you on complaint rate, bounce rate and engagement, not on volume by itself — a well-targeted 50 a day to a verified list will outperform 200 a day to a scraped one on every measure that matters. The volume guidance on this page exists because a young domain has no track record to absorb a mistake, not because low volume is virtuous in itself.
Related guides
- How warmup ramps up — the day-by-day curve and what changes it
- Safe cold-email sending limits after warmup — the steady-state view
- Why your warmup daily limit is lower than your target
- How campaign sending schedules and pacing work — how your daily budget is spread across the day
- Do I need to verify my list before I send?
- Full documentation
Still unsure what volume is right for your setup? Email [email protected] with your domain age and how many mailboxes you have connected, and we will tell you what to send.