Verified domains
Resend sends emails using a domain you own (i.e., not a shared or public domain). You must add and verify at least one domain to send emails with Resend. You can optionally configure your domain to receive emails. You can add and verify multiple subdomains from the same root domain (e.g.,newsletter.example.com and account.example.com) to identify different sending purposes and still assure recipients and inbox providers that the emails come from you. This can protect the sending reputation of your transactional emails from any negative recipient response to your marketing emails, and allows you to configure different domain settings such as open and click tracking for each subdomain.
Domain features
When you add a domain, you can choose to:- Enable open and click tracking for your emails.
- Configure Enforced Transport Layer Security (TLS) to ensure that you only send encrypted emails.
- Set a custom subdomain for the Return-Path address.
- Choose which geographical region to send emails from to reach your recipients sooner.
- Send and receive emails using any email address at your domain without any extra configuration.
- Implement DMARC and BIMI to build trust and improve inbox placement.
Subdomains
We recommend sending your emails from one or more subdomains (e.g.,updates.example.com) instead of your root domain to isolate your sending reputation and to clearly communicate your intent to your recipients.
You must add each subdomain individually, and they will be displayed in the Domains Dashboard page as separate entries where you can manage and configure them independently.
There are several benefits to sending from a subdomain:
- Sender intent: clearly communicate your intent to your recipients, increasing trust through transparency.
- Reputation control: Using separate subdomains can help segment sending reputation.
- Configuration settings: Enabling open and click tracking for your marketing emails, while keeping it disabled for your important transactional emails such as password resets.
example-alerts.com instead of alerts.example.com) can appear suspicious to spam filters and confusing to your recipients. Inbox providers may flag them as phishing or spoofing attempts, and your users are more likely to ignore, delete, or even report the emails as spam.