What Happens When Gmail’s Daily Limit Hits Mid-Campaign
Hit Gmail’s sending limit mid-campaign? What Google does, why it matters, and how Infiara isolates the throttled mailbox and keeps your campaign sending.
Key takeaway
When a Gmail or Google Workspace mailbox reaches Google’s daily sending limit, Google temporarily blocks it from sending, typically for up to 24 hours. Infiara detects the limit response, restricts only that mailbox until it can send again, and keeps the campaign running from your other live mailboxes.
Google limits how much any one mailbox can send per day. Cross the line and further sends fail until the limit resets. In many tools, that means the whole campaign stalls or keeps retrying against a blocked mailbox.
What a good tool should do
- Recognize Google’s limit response instead of treating it as a random error.
- Stop sending from that mailbox until the restriction lifts.
- Keep the campaign moving through other mailboxes.
- Tell the operator what happened, in plain language.
Prevention beats recovery
Set a daily cap on each mailbox well below Google’s ceiling, send inside business hours, and spread volume across several mailboxes. Infiara applies the cap per mailbox and rotates each campaign across every live mailbox that still has cap remaining.
Signs you are sending too hard
- Rising bounce rates on a new list.
- Fewer replies at the same volume.
- Google limit errors on a mailbox that used to send fine.
- Recipients mentioning your email went to spam.
When you see these, slow down before Google does it for you: lower the mailbox’s daily cap, clean the list, and check SPF, DKIM, and DMARC on the Domains page.
A worked example
Say a campaign needs to reach 600 contacts and you have three Google Workspace mailboxes, each capped at 100 per day in Infiara. The campaign sends up to 300 a day across the three mailboxes, inside the weekday window, and finishes in two business days. If Google throttles one mailbox halfway through day one, that mailbox is restricted until it can send again, while the other two keep sending up to their caps. Nothing is lost; the remaining contacts stay queued.
Frequently asked questions
How long does a Gmail sending restriction last?
Typically up to 24 hours on a rolling window. Repeated violations can lead to longer restrictions.
Will the campaign lose those emails?
No. Unsent emails stay queued and go out from another live mailbox or once the restricted mailbox can send again.
Connect Gmail, Google Workspace, Microsoft 365, or SMTP, import a list, and let Infiara run personalize → send → follow up → stop on reply → AI reply triage.
