Sending
Manage warm-up and sending limits
By the end of this page, you can read a mailbox’s effective cap and understand what changes its sending volume.
Monitor the warm-up ramp
A newly connected mailbox starts at 8 emails per day. Its allowed volume then compounds by about 15% each day until it reaches the mailbox’s configured daily limit.
Depending on that limit, the mailbox typically reaches full speed in roughly two to three weeks. A mailbox capped at 50 per day reaches full speed sooner than one capped at 200 per day.
Open the Mailboxes page to see each mailbox’s warm-up progress as a percentage and today’s effective cap.
Skip warm-up for trusted mailboxes
If a mailbox already has stable sending history, open Safety settings on the Mailboxes page and turn on This mailbox is already warmed up — send at full speed.
InboxJoy removes the ramp start date for that mailbox, so it can use its configured daily limit immediately. Turn the setting off to start a fresh ramp from today.
Respond when bounces pause the ramp
A day does not count toward the ramp when bounces push a mailbox’s health to degraded or critical. The countdown pauses instead of continuing through a bad day.
The Mailboxes page shows Ramp paused — today does not count beside the warm-up percentage, along with the current bounce rate. The ramp resumes counting when health recovers.
Recovery does not need you to do anything: if no new bounce arrives for 24 hours, a critical mailbox steps back to half volume on its own, and that trickle of sends restores the bounce rate from there. Fresh bounces put it back on hold.
Set mailbox caps and sending windows
Configure these limits independently for every mailbox:
- Daily limit: Set up to 200 emails per day for each mailbox.
- Hourly limit: Set up to 50 emails per hour for each mailbox.
- Sending window: Choose the days and hours when the mailbox can send. InboxJoy evaluates the window in that mailbox’s timezone.
A workspace-wide daily send cap also applies across every connected mailbox combined. Configure it in Settings → Sending.
Rotate across several mailboxes
When you connect multiple Gmail or Outlook mailboxes, you multiply your daily capacity. When you enroll leads, InboxJoy spreads them across healthy mailboxes in proportion to each mailbox’s remaining daily capacity, including its warm-up limit.
Each lead keeps the same sender address for every follow-up in the sequence. Paused or unhealthy mailboxes are skipped automatically.
Keep suppressed addresses from sending
InboxJoy checks every send against your workspace suppression list when the email goes out, not only at enrollment. If you add an enrolled lead’s address to the do-not-contact list, that address does not receive further sends.
Check bounce-related limits
InboxJoy calculates each mailbox’s bounce rate from recent sends. When the rate rises, InboxJoy cuts the effective daily limit automatically, independent of the configured daily limit.
| Mailbox health | Trigger | Effective daily limit |
|---|---|---|
| Healthy | Bounce rate under 2% | Full configured daily limit |
| Degraded | Bounce rate 2% or higher, or repeated send failures | Cut to about half the daily limit |
| Critical | Bounce rate 5% or higher, or repeated permanent failures | Cut to zero until it recovers |
InboxJoy calculates these limits automatically from delivery events. There is nothing to configure. Keeping your list clean is the most direct way to avoid a reduction. See Import leads.