Start with a sending subdomain
GTM sends email through verified sending domains and sender addresses. Attach a subdomain you control, publish the DNS records shown in settings, and verify it before sending. Gmail, Outlook and IMAP mailbox connections are not offered.
The recipient sees the sender address on that domain. Replies arrive through an inbound webhook and appear in the product's inbox. GTM does not place sent messages in a connected Gmail or Outlook Sent folder.
Pacing belongs to each sender
Each sender has its own pacing and age ramp. Domain verification and authentication are setup requirements, not promises of inbox placement. List quality, recipient interest and sending behavior still affect reputation.
Warmup exchanges between your own senders cannot establish reputation at Gmail or Outlook. It is not a cross-provider mailbox warmup network.
Access and cost
Create an account, then configure the sending domain and sender before running email outreach. Sending from a connected mailbox costs no credits; leads use the separate data allowance.