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    GuideDomain VerificationInbound MX Setup

    Configure Inbound MX Records

    Configure MX records to route incoming emails sent to yourdomain.com to Simply Send's inbound processing servers.

    Overview

    To receive emails inside Simply Send, you must declare Simply Send as an authorized mail receiver for your domain name. This is accomplished by setting up a dedicated Mail Exchanger (MX) record in your domain's DNS settings.

    Before setting up your MX records, choose how Simply Send routes emails for your domain: Option A (Subdomain Prefix) or Option B (Root Domain/Apex).

    Option A: Subdomain Prefix (Recommended for active domains)

    Co-exist with G Suite / Outlook

    Use this option if you already use your apex domain (e.g. mycompany.com) to receive corporate or business emails on external mail clients. By routing inbound messages through a subdomain prefix, you isolate system-generated traffic without disrupting your regular business mail.

    DNS Record Specification

    Record TypeHost / NameValue / Points toPriority
    MXmail.yourdomain.cominbound-smtp.us-east-1.amazonaws.com10

    Configuration Examples

    • Apex Domain: mycompany.com
    • Inbound Subdomain Prefix: mail
    • MX Record Host: mail.mycompany.com
    • MX Record Target: inbound-smtp.us-east-1.amazonaws.com

    Example Inbound Addresses

    Simply Send will receive all emails sent to wildcard sub-addresses, such as:

    Option B: Root Domain / Apex (No Prefix)

    Sole Receiver Domain

    Use this option if you have a fresh domain or a dedicated sending domain that does not receive regular business email. Simply Send acts as the primary and only Mail Exchanger (MX) for the entire domain.

    DNS Record Specification

    Record TypeHost / NameValue / Points toPriority
    MX@ (or left blank)inbound-smtp.us-east-1.amazonaws.com10

    Configuration Examples

    • Apex Domain: mycompanysend.com
    • Inbound Subdomain Prefix: (None / Empty)
    • MX Record Host: @ (Apex root domain)
    • MX Record Target: inbound-smtp.us-east-1.amazonaws.com

    Example Inbound Addresses

    Simply Send will receive all emails sent to wildcard addresses directly on the domain:

    CRITICAL WARNING: Overwriting Root MX Records

    Do not add the Simply Send inbound MX record on your root apex domain (@) if you already receive company email on it.

    Overwriting root MX records will hijack your existing incoming mail servers (e.g. G Suite or Office 365) and permanently bounce normal incoming business mail. You must use a subdomain prefix (e.g. mail) for Simply Send in this scenario.

    Verify and Activate

    Wait for Propagation

    DNS changes usually propagate globally in a few minutes, but can take up to 24 hours.

    Verify in Console

    Toggle inbound receiving in your dashboard's DNS Records panel under your domain options and verify the MX record.