Start with a meeting goal, then adjust the assumptions. The result is a planning scenario, not a deliverability or pipeline guarantee.
Build your scenario
Every output below is calculated from the assumptions you choose. Provider limits are ceilings, not safe-volume targets.
Positive replies divided by contacted prospects. Replace the default with your own historical rate.
An editable planning guardrail, not a Google or Microsoft safe limit.
An operating choice for cost and risk separation, not a provider requirement.
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This is what your setup looks like
Compare two rollout patterns
This chart compares sending volume only. It does not predict inbox placement. Advance a staged rollout only while authentication, SMTP responses, bounces, complaints, and provider reputation remain healthy.
Staged planning range
One volume change at a time
Immediate target volume
Less time to observe feedback
Domain names ready to buy
Optional risk separation: Overloop generally recommends a clearly related secondary domain for higher-risk outreach. It must remain transparent to recipients and follow the same provider and legal requirements.
Planning note: the volume path is an editorial scenario, not a provider rule. Hold, reduce, or pause when delivery signals worsen.
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What to buy
Scenario: 3 domains and 5 mailboxes for a 10-meeting monthly goal
Review the assumptions, provider terms, and your historical conversion data before purchasing infrastructure.
Use your own positive-reply, meeting-conversion, sequence, and mailbox planning inputs.
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Review the scenario
Compare domains, mailboxes, estimated infrastructure cost, and staged volume.
3
Validate before launch
Check authentication, provider terms, recipient expectations, and live delivery signals.
Frequently asked questions
A clearly related secondary domain can separate higher-risk outreach from employee and transactional mail, but it is optional and does not guarantee delivery. The mail must remain transparent, wanted, authenticated, and compliant. Mailboxes per domain and daily volume are editable planning choices, not provider limits.
The planner works backward from your meeting goal using the positive-reply rate, reply-to-meeting conversion, and emails-per-prospect values you select. Replace the defaults with your own historical data; the output is a scenario, not a forecast.
No provider publishes one safe schedule for every mailbox. The chart is an editorial volume illustration; advance only while authentication, SMTP responses, bounces, complaints, and provider reputation remain healthy.
Choose based on provider terms, account type, security, administration, recipient mix, and your organization's existing setup. Neither provider guarantees inbox placement, and product sending limits are not deliverability targets. Check current official pricing before purchase.
Increase the goal or adjust the assumptions, then validate the new scenario. Introduce each material change gradually and use provider feedback to decide whether to continue; existing mailboxes should not be assumed safe at any fixed volume forever.
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