Mailbox Calculator

The Mailbox Calculator is a smart tool designed to help you estimate the number of domains and mailboxes needed to support your email outreach.
By ensuring you have the optimal setup, this calculator allows marketing managers, CRM specialists, and business owners to scale email campaigns effectively while maintaining deliverability and reputation.

How to Use the Mailbox Calculator :
  • Emails per Contact to be Sent: Enter the average number of emails each contact will receive within a specific period.

  • Mailboxes per Domain: Input the number of mailboxes each domain can support.

  • Contacts per Month: Specify the number of unique contacts you plan to reach monthly.

  • Mailbox Calculator

    Mailboxes Calculator Data

    Calculate needed domains and mailboxes

    ЁЯМПя╕О Required Domains

    тЬЙ Required mailboxes:

    $

    Your Mailboxes Calculator report is ready

    Required Domains:

    Why It Matters?
    This shows the number of domains you need to maintain optimal deliverability. Overloading a single domain can lead to emails being marked as spam, so distributing emails across multiple domains helps preserve your sender reputation.

    Required Mailboxes:
    Why It Matters:
    Adequate mailboxes ensure smooth email distribution. A shortage of mailboxes can lead to flagged accounts due to high-volume sends from limited addresses, affecting deliverability.

    Next Steps?
    If your mailbox requirement is high, check if your email frequency can be reduced or if lists can be better distributed. Optimized mailbox usage keeps your emails flowing smoothly, landing in inboxes without issues.
    1. Fine-Tune Frequency and Targeting:

    Less is More:
    Reduce email frequency where possible, focusing on quality over quantity. Target the right segments or send fewer emails to reduce the load on your domains.

    Engage High-Potential Contacts:
    Direct your efforts toward contacts with a higher likelihood of engagement to maximize impact while reducing infrastructure strain.

    2. Balance and Segment Across Domains:

    Spread the Load:
    Evenly distribute contacts across domains to avoid overloading any single domain.

    Smart Segmentation:
    Segment your lists by engagement or purchase behavior. A more granular approach allows efficient domain use without sacrificing reach.

    3. Domain Rotation and Warm-Up:

    Rotate Domains:
    Avoid relying on a single domain by alternating domain usage, which protects your sender reputation.

    Warm Up New Domains:
    Ramp up email volume gradually with new domains to build a solid sender reputation and ensure consistent inbox placement.

    4. Boost Engagement with Personalization:

    Personalize for Impact:
    Customized emails improve response rates and allow you to achieve your campaign goals without increasing email volume.

    5. Optimize Sending Times:

    Timing is Key:
    Send emails during high-engagement periods to reduce the need for multiple follow-ups and maximize each send’s impact.


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