# SMTP relay service for your existing applications

## Your region.  Your connection settings.

Choose the API key’s region and the transport your application supports.

SMTP connection Harbor application
API key region Europe · eu1United States · us1Transport 465 · Implicit TLS587 · STARTTLS2525 · STARTTLS

Host
eu1.smtp.bird.com

Username
bird

Password
Your regional API key

Connection sequence
- 01 `Connect eu1.smtp.bird.com:465`
- 02 `TLS connection established`
- 03 `Authenticate with emails scope`
- 04 `Submit your MIME message`

Credentials are sent after encryption.

[Explore SMTP](/docs/guides/email/smtp)
Interactive illustration with fictional records. No account operation is performed.

[Explore Email smtp →](/docs/guides/email/smtp)

[Deliverability Prepare your sending identity and understand delivery health. →](/email-api/features/deliverability)

[Webhooks Let your application react to email events. →](/docs/guides/email/events)

[Analytics See where email succeeds and where to investigate. →](/email-api/features/analytics)

[Explore Email →](/email-api)

## Scale without  losing control.

Organize teams in workspaces, control API access, and trace changes through audit logs.

Harbor Organization
Workspaces Production Sandbox

### Delivery agent

API key · Customer operations team
Active
Permissions Access
Email Read & write
SMS Read & write
WhatsApp Read Read & write
AL Alex Lee Admin  Permissions updated

### Audit log

Production
 API key updated Alex Lee · 09:42:18 UTC

Workspace
Production

Resource
Delivery agent

WhatsApp
Read Read & write

Succeeded

 [Workspaces](/docs/guides/workspaces)[Team roles](/docs/guides/users-teams-roles)[API authentication](/docs/guides/authentication)
[Explore Enterprise](/enterprise)

## Start with Email. Build across channels with Bird.

[Get started](/dashboard/signup?returnTo=%2Fdashboard%2Fw%2Femail) · [Contact Sales](/demo?product=email)

[Email](/email-api) · [SMS](/sms-api) · [WhatsApp](/whatsapp-api) · [Apple Messages](/apple-messages-api) · [Voice](/voice-api)