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When you connect a custom sending domain in Molin, the wizard shows you 4 NS records to add at your registrar. This guide covers adding them in Namecheap’s Advanced DNS panel.
This guide assumes you’re using Namecheap BasicDNS or PremiumDNS (the default for domains registered at Namecheap). If you pointed your domain’s nameservers at a third party (e.g. Cloudflare or Google Domains), follow that provider’s guide instead — records added in Namecheap will be ignored.

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Prerequisites

  • A Namecheap account with the domain you want to use
  • The exact records Molin shows you in the email setup wizard (4 NS records)

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Steps

  1. Sign in at namecheap.com and open the Domain List
  2. Click Manage next to the domain you want to use
  3. Open the Advanced DNS tab
  4. Confirm the Nameservers field at the top says Namecheap BasicDNS or Namecheap PremiumDNS. If it says Custom DNS, your records belong elsewhere — see the warning above
  5. Under Host Records, click Add New Record for each Molin NS record:
    1. Set Type to NS RECORD
    2. Set Host to the value shown in the wizard’s Name column — this is the subdomain you chose to connect (e.g. molin if you connected molin.yourshop.com)
    3. Paste the nameserver value into Nameserver (e.g. ns1.molin.ai)
    4. Leave TTL at Automatic
    5. Click the green checkmark to save the row
    6. Repeat for the remaining 3 NS records
  6. Click Save All Changes at the top of the Host Records table

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Verify

  1. Return to the Molin email setup wizard
  2. Click Verify now
Namecheap BasicDNS changes usually take effect in 1–2 minutes. PremiumDNS is faster, often under 30 seconds.

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Troubleshooting

  • The Advanced DNS tab is missing — you’re on the Domain tab. Look for the tab strip at the top of the page; Advanced DNS sits next to Sharing & Transfer.
  • NS records won’t save because of “duplicate host” — Namecheap auto-creates default NS records on new subdomains. Delete any existing rows on the same Host before adding the Molin ones, then save.
  • Verification fails after a clean copy — confirm the Host field matches Molin’s subdomain prefix exactly, a missing or mistyped prefix is the most common cause.

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Reference

For Namecheap’s own documentation, see How can I set up Custom DNS records.