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Guides Domains & senders Add and confirm a sender

Add and confirm a sender

A sender is a From identity you send with: a from-address, a display name, an optional reply-to, the email types it’s used for, and a tracking domain. Before a sender can send, RadarSend confirms it actually works by sending a real test email through your sending service.

Before you begin#

Add a sender#

Go to Settings→Sending→Senders and click + Add sender. The wizard has three steps.

Step 1 — From address#

On Who’s it from?, type the address you’ll send from (e.g. newsletter@yourdomain.com) in the Sending address field, then click Continue. It should be on a domain you’ve authenticated with your sending service.

Step 2 — Details#

On How should it appear?, set:

  • Display name — the from-name recipients see (e.g. Acme Newsletter).
  • Reply-to — optional, where replies go.
  • Use this sender for these email types — tick at least one type this sender handles.

Click Continue. (No email types yet? Use the Set up email types → link first.)

Step 3 — Tracking & confirm#

On Tracking & confirm:

  1. Pick a Tracking domain (or Set up a new tracking domain inline).
  2. If you have more than one sending service, choose one under Sending service.
  3. Enter a recipient under Send a confirmation test to and click Send test. RadarSend sends one real email through your sending service — if it’s accepted, this address can deliver.
  4. When the test is accepted, click Save sender.

If the test is rejected, RadarSend shows {Service} didn’t accept this address with the sending service’s reason. Where the service reports it, it also shows the domain’s current status there, or that the domain isn’t on the account yet. Verify the domain in the sending service using the Open … in {Service} link, then click Send test again. For Amazon SES, the domain must be verified in the region the service is connected to, and while the SES account is in the sandbox the test recipient must be a verified address too. See Authenticate your sending domain.

Save without confirming

You can , but the sender can’t actually send until at least one of its sending services is confirmed.

Sending services (lanes) and confirmation#

A sender can send through more than one sending service. Each sender × sending service pairing is confirmed independently with its own test send — RadarSend marks it verified only when a real test actually succeeds, so a sender can never send through an unproven service.

Manage these in the sender’s editor under Sending services:

  • Each service shows Verified or Needs confirmation.
  • Confirm runs a test send and, on success, marks the service verified.
  • Make default sets the verified service a broadcast uses by default.
  • + Add a sending service… adds another service for this sender (it starts unverified).

If you change the sender’s from-address, its services are reset to unverified — the earlier tests only proved the old address.

Common issues#

  • Sender saved but can’t send. It has no confirmed sending service. Open the sender and Confirm a service with a test send.
  • Test send rejected. The from-address isn’t authenticated at your sending service — authenticate the domain (see above), then retry.
  • No tracking domain to pick. Set up a tracking domain first.
  • Can’t finish Step 2. You must select at least one email type; define one if none exist.

Good to know#

  • The from-address’s domain should match a domain you authenticated at your sending service (SPF/DKIM), or the confirmation test will fail.
  • Adding a sender is also what makes its domain appear under Settings→Sending→Email domains for warming and DMARC.