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Your own mailboxes

Your mailboxes. Your limits.

Connect the mailboxes you already pay for. Each keeps its own daily limit and ramps up slowly. When one stops, it says why and what brings it back.

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Mailboxes connect over SMTP and IMAP and stay with your email provider.

Four mailboxes, one project: sending, at its limit, and two paused, each with its reason.Example records

From connection to recovery

One mailbox, from the first test to a pause and back.

The fourth mailbox above, over eight days. Its reply reading stopped once; this is what it said and what fixed it.

accounts@ledgerandco.exampleLedger & Co · campaign hours 09:00-17:00 Europe/London

  1. Mon 14 Sep

    Connected and tested

    Ready to send

    SMTP and IMAP details with an app password. Test signs in to both; SPF, DKIM and DMARC are looked up now and again every day.

    • SMTP connection OK
    • Replies can be read (IMAP)
    • SPF, DKIM and DMARC pass

  2. 14-18 Sep

    Ramping up

    Sending, ramping up

    10 a day on the first day, then 5 more a day towards the 30 you set. Until it has sent 50 emails it sends at most 20 a day. Every email in the ramp is a real campaign email.

    1. Day 110
    2. Day 215
    3. Day 320
    4. Day 425
    5. Day 530

  3. Mon 21 Sep

    Sending inside its limits

    Sending

    It stays at 90% of its daily limit, an hour never takes more than an eighth of it, and emails go 30 seconds to 3 minutes apart inside the campaign's hours. Replies are read every 5 minutes.

    Today27 of 30

    Replies read 3 min ago

  4. Tue 22 Sep, 10:12

    Paused: replies not read

    Paused

    The mailbox password was changed at the provider, so the IMAP sign-in was rejected. After 30 minutes without a read, sending stopped, so no reply or opt-out to this mailbox goes unseen.

    Why it stopped: Replies could not be read for 30 minutes, so sending stopped.

  5. Tue 22 Sep, 10:31

    Fixed and resumed

    Sending

    You enter the new app password, Test the mailbox and press Resume. It goes back to the stage it was paused in, with its ramp where it was.

    • Test passed
    • Replies read just now

    Limit still 30 a day.

One mailbox's ramp, its limits, a pause with its reason, and Resume.Example records

When it stops

Every stop says why, and what you do next.

  • Daily limit reached

    The mailbox has sent its share for today. Counts reset at midnight UTC.

    What you do: Nothing. It sends again in the campaign's next hours.

  • Outside the campaign's hours

    The window is checked again right before each send. An email that would miss it waits.

    What you do: Nothing. It goes when the next window opens.

  • Paused: bounce rate

    Its bounce rate reached 5% after at least 50 sends. Checked every 6 hours.

    What you do: Clean the list of old addresses, then Resume.

  • Paused: replies not read

    Replies could not be read for 30 minutes, for example because the IMAP sign-in was rejected.

    What you do: Fix the IMAP details, Test the mailbox, then Resume.

  • On the suppression list

    The address bounced or opted out. It is blocked for every project in the workspace.

    What you do: Nothing, unless it was added by mistake.

Questions

About sending and your domain.

How does a new mailbox start?
Its daily limit starts at 10 and rises by 5 a day to the target you set, for at most 21 days, and every email in that ramp is a real campaign email. Until it has sent 50 emails it sends at most 20 a day. A domain registered only days ago is best warmed up with a warmup service before you connect it.
What does Sent mean?
That your mail server accepted the email. Where it lands after that depends on your domain, your list and the receiving provider, so the replies and bounces that come back are the signal to watch.
Which email providers work?
Any mailbox with SMTP and IMAP and a password. Google Workspace and Microsoft 365 connect with an app password. Your mailboxes and domains stay with your email provider, and connected mailboxes do not count against your plan, so connect as many as you need.
When does a mailbox pause itself, and how does it restart?
When its bounce rate reaches 5% after at least 50 sends (checked every 6 hours), or when its replies could not be read for 30 minutes. Nothing sends from a paused mailbox until you resume it. Resume continues the ramp where it stopped; Restart ramp is a separate action that starts it again.
Why pause a mailbox whose replies cannot be read?
Because a reply, a bounce notice or an opt-out to it would go unseen, and the next email could reach someone who already said no. The mailbox shows when its replies were last read and why the last read failed.
How often can the same person be emailed?
At most once in 48 hours from one project. A follow-up that falls inside that window waits until it has passed.
Can a bounced address be emailed again?
Once someone removes it from the suppression list. A hard or a soft bounce adds the address to the list for the whole workspace, so even a temporary problem blocks it until then.

Next: replies

A reply stops the sequence and waits for you

Replies are matched to the person and campaign, labelled, and answered from the mailbox the conversation started on.

How replies work

Tell us how you send today.

Which provider, how many mailboxes, how many emails a day. Early access is by invitation, and we reply by email.

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