Start With Your Domains and Mailboxes
List the domains and mailboxes that will send outreach, the provider behind each mailbox, and the person authorized to configure them. Ask what authentication and provider requirements apply to that setup. Do not treat a generic warmup schedule as a substitute for checking your own domains and mailboxes.
Google's sender guidance covers authentication and spam-rate monitoring for mail sent to personal Gmail accounts. Microsoft documents outbound limits and restriction behavior for Exchange Online. The applicable rules depend on the provider and the sending pattern.
Understand How Domain Warmup Will Be Managed
Clarify who creates or configures the domain and mailbox, how sending begins, what is reviewed before volume changes, and what causes a pause. Ask for the owner of each step and the evidence they will use to make a change.
In Fully Managed programs, Silenium supports domain warmup. Agree on who handles setup, how sending begins, and when to review progress. Warmup does not guarantee inbox placement.
Know What Will Be Monitored
Agree on which delivery errors, mailbox restrictions, complaints, and provider reputation signals will be checked, how often, and who is notified when they change. Google Postmaster Tools can show spam rate, reputation, authentication, and delivery errors for qualifying Gmail traffic. Microsoft describes restrictions when outbound limits or spam controls are triggered.
Ask how the team will distinguish a targeting or message problem from a sending problem. A response-rate change by itself does not identify the cause.
Know What Happens When There Is a Problem
If a mailbox is restricted, a domain is unhealthy, or a recipient requests no further contact, the team needs a clear person to contact and a next step. Decide when sending stops, who investigates, and how campaign changes are approved.
Review the process again when the audience, volume, mailbox, or offer changes. Keep reviewing domain and email health throughout your campaigns.