Lovable: Connect to Resend by Signing In to Your Account
LovableLovable now lets people connect Resend by signing in with their Resend account instead of pasting an API key. The person authorizes access for their Resend team and Lovable refreshes it automatically. Connecting with an own API key is still available.
Key Takeaways
- Resend can now be connected by signing in, with no API key to create or paste.
- Sign-in connections default to Full access, with Sending access available through the More options path.
- Lovable refreshes the access automatically, and deleting the connection in Lovable also revokes access in Resend.
- Domain-restricted sending still needs an API key, since sign-in connections cannot be limited to one domain.
- A revoked API key is not flagged as expired in Lovable, so sends fail silently until the key is replaced.
- Sending to anyone other than the account owner still requires a verified domain in Resend.
Sign in to Resend instead of pasting a key
On November 9, 2026, Lovable added a sign-in option to its Resend connector. Resend is an email API, and the connector lets an app send email, mostly transactional messages such as confirmations, notifications, and onboarding emails, through the person's own Resend account. Previously this required creating and pasting an API key. Now a person can authorize access for their Resend team, and Lovable refreshes that access automatically.
How the sign-in flow works
On the Connectors page, a person clicks Connect, signs in to Resend, authorizes the app, and returns to Lovable. By default this creates a private connection with Full access. To choose Sending access, or to name or share the connection during setup, they use More options, then App + chat connector, then Connect with Resend.
- Full access sends email and manages domains, contacts, broadcasts, and webhooks.
- Sending access sends email and broadcasts only, and cannot read sending domains or email status.
If access expires, for example after being revoked in Resend, the connection needs to be reconnected. Deleting the connection in Lovable also revokes Lovable's access in Resend.
The API key option remains
Connecting with an own API key is still available and is the right choice for limiting a connection to sending from one domain, which sign-in connections cannot do. Resend shows a new key only once, so it must be copied immediately. Lovable verifies the key before saving. If a key is later deleted in Resend, Lovable does not flag the connection as expired, and sends simply fail until a new key is added.
Practical notes
Resend's test address, onboarding@resend.dev, delivers only to the account owner. To email real users, a domain must be verified in Resend. Multiple connections are possible, for example for staging and production. Lovable recommends Lovable Emails for standard transactional email.