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Smart Daily Limit sets each mailbox’s daily send limit for you (from how long the account has been here, the deliverability its warm-up reports, and how far into its ramp it is) instead of a fixed number you type in. An hourly pass revisits that number for every account with a warm-up linked.
Where
Integrations→Integrations→Email Accounts
Your role needs
Read access to Email Accounts read-senders. Admin, Member and Viewer have it by default.
To create or change
create-senders to add one, update-senders to change one, on top of the permission above.
If you cannot find this in your sidebar, your workspace may have a custom menu configuration. Contact support and we will check it for you.
That number is the right-hand half of the Daily Usage column on Email Accounts: today’s sent count over the current limit. The lightning icon beside it opens Smart Limit Status, the panel that explains where the limit came from. On a narrow screen the breakdown opens in a small dialog in the middle of the screen, with a close button in its heading, rather than in a panel anchored to the icon. Hovering the icon says whether the feature is on for that account: Smart Daily Limit Active or Smart Daily Limit Disabled. The chip (1) names the step the calculation reached. The deliverability tiles (2) are what the warm-up network reports for this mailbox, and they are what chooses the rule. The green figure (3) is what the engine arrived at: the account’s stored limit only catches up on the next hourly pass.

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How it behaves

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The engine stops at the first step that applies

For one mailbox, in this order:
  1. Smart Limit is off for this account. Nothing is calculated, and the stored limit is left alone.
  2. The account is still in quarantine. The limit is 0: no campaign email at all.
  3. The account has no warm-up linked. Nothing is calculated.
  4. The deliverability scores cannot be read. Nothing is calculated.
  5. No rule matches the scores. Nothing is calculated.
  6. A rule matches. Its limit is put through the ramp, then the day’s variation, and that is the number.
Only steps 2 and 6 produce a figure. At every other step the engine stops where it is and the stored limit stays exactly as it was, which is why an account can sit at a number for weeks without anything being wrong with it. The panel always names the step it stopped at.

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A new mailbox sends nothing at all for its first 30 days

Quarantine is checked before deliverability, before the rules, before everything except the on/off switch. While an account is inside it the calculated limit is exactly 0, and the panel replaces the body with Quarantine Period: a progress bar, how many of the days are done, how many are left, and the line that the daily limit is 0 during quarantine. The clock is the age of the account here (the day you connected it), not the age of the mailbox at its provider and not the day its warm-up started. A mailbox you have owned for years starts its 30 days from the day you add it. Quarantine and ramp-up covers that window on its own. When an account finally leaves quarantine and gets a limit above 0, the workspace gets a notification and an entry in the activity feed. You do not have to watch for it.

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Deliverability picks the rung

Once out of quarantine, the engine asks the warm-up network how this mailbox is delivering and gets back two figures, shown in the panel as Deliverability Scores under Gmail and Outlook. Some warm-up sources report a single overall figure rather than one per provider; where that is the case both tiles show the same number, which is correct rather than a display fault. Those two scores are then matched against a ladder of rules. Each rule is a band (a floor or a ceiling on the lower of the two scores, the higher of the two, or both), and it carries one daily limit. The ladder is walked in priority order and the first rule that matches wins; the panel names it under Matched Rule and prints its base limit. Today the top of the ladder is 14 emails a day, so a mailbox delivering well everywhere is not going to be given a number in the hundreds. Two things about that box are worth knowing. The rule names are written for the people who maintain the ladder, so they read like A1 - Both providers >= 90% and stay in English. And the ladder itself (every band, every limit, every priority) is set for the whole platform, not by your workspace: there is no screen in the app where you can edit it.

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The ramp releases that number over the first weeks

The rule’s limit is not handed over all at once. The first week out of quarantine runs at 25% of it, and each further week adds another 25%, so the fourth week is the first at the full amount. The panel shows this as Ramp-up Progress with the week number and the percentage, and it reads Ramp-up complete once the account is at 100%. The multiplied figure is rounded down, which is why a low rung early in the ramp can still work out at nothing.

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The last step is a small day-to-day variation

After the ramp, the number can be nudged by a percentage so that a mailbox does not send exactly the same count every single day. The nudge is fixed for a given account for the whole day, so the limit does not wander while you watch it. It can never lift a limit of 0, so a quarantined account cannot be nudged into sending. And the size of the variation is a platform setting, off unless PipeLime turns it on.

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It is recalculated every hour, not when you look at it

A scheduled pass runs once an hour and writes the new limits. It only runs at all while warm-up is switched on for the platform, and it does not look at every account. Three kinds are left out before anything is calculated: archived accounts, accounts with Smart Limit off, and accounts with no warm-up linked. That third one is the one to remember, because a mailbox with no warm-up is the ordinary case: the hourly pass never loads it, so its limit is never moved by this feature at all. Of the accounts it does load, it writes only the ones the engine produced a figure for. A breakdown that stops at a failed deliverability read or at no matching rule produces nothing, and nothing is written. When the recalculated number is the same as the stored one (which is the usual case for a settled account), nothing is written either, so the limit does not churn during the day. The panel is the exception: opening it works the number out there and then instead of reading the stored one. That is why Calculated Limit can differ from Current Daily Limit for up to an hour after something changes. The two agreeing is the normal state; the two disagreeing means the hourly pass has not caught up yet.

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Turning it off freezes the number and hands it to you

An account you connect starts with Smart Limit on, so this is a decision you make later, if at all. The switch at the bottom of the panel reads Disable Smart Limit while the feature is on and Enable Smart Limit while it is off. Turning it off does not change the limit: it stops the hourly pass from changing it, so the account keeps whatever number it was last given until you set one yourself. Turning it back on lets the next pass move it again. Two details catch people out. The panel does not redraw when you flip the switch: the switch itself moves and a confirmation appears, but the chip and the boxes above it still show the reading taken when you opened the panel. Close it and open it again for the new state. And the switch is only there for a role that can change email accounts: a read-only role sees the whole breakdown with no control under it. Once Smart Limit is off, the number is yours to set: on one account through Edit, or on several at once through Edit Limits on the selection bar, where Smart Daily Limit and Daily Email Limit sit in the same dialog. While the smart toggle is on there, the limit field is disabled and reads Automatically managed by Smart Daily Limit, and the dialog sends no limit at all. The same bar carries Enable Smart Limit and Disable Smart Limit for doing it to many accounts without opening each panel. Turn Smart Limit off first, in either place. A number you type into Edit while the feature is still on is overwritten as soon as the engine has a figure to write: the first hourly pass in which a rule matches for that account, or in which the account is still inside quarantine and the figure is 0. In the states where the engine produces nothing, including the common no-warm-up one, the pass leaves the account alone and your number stays. Turning Smart Limit off takes the account out of the hourly pass altogether, so you do not have to work out which of those you are in. Whatever the limit is, warm-up email does not count against it. The limit governs campaign email.

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On, but not doing anything

The most common state on a real workspace is not a calculation at all: Smart Limit is on, and there is nothing for it to work from. The panel says so in an amber banner above the breakdown (Smart Limit is enabled but not taking effect), and the chip reads No Warmup. The banner has two versions, and they mean different things. One says the account has no warm-up at all; the other says its warm-up is paused or expired. The second can appear next to an Active chip: the engine still gets scores and still produces a number, but the warm-up behind them has stopped, so the number is running on stale ground. Either way the fix is the same: start or resume a warm-up for that mailbox.

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What each chip means

The chip in the top right is the whole state in one word. Two more panels have no chip of their own. If the request for the breakdown itself fails, the panel shows only Could Not Fetch Data. And No Rule Matched is the body that goes with the No Rule Match chip, naming the two scores that matched nothing. In every state that has a chip, two things are always there: Current Daily Limit at the top (the number the account is actually running on, in emails/day) and View capacity timeline at the bottom, which opens this account’s capacity timeline.

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Limits

Quarantine and ramp-up

The opening window in full: what a brand-new mailbox does while it sends nothing.

Email warm-up

What the deliverability percentages are measuring, and how to start or resume a warm-up.

Sending capacity timeline

The same calculation drawn across days, for one mailbox or the whole fleet.

Why is my sending limit so low?

Start here when the number is smaller than you expected and you want it changed.