# Email Settings Before sending campaign emails, you need to configure your email settings. This includes connecting your SendGrid account, setting up your sender identity, and adding your company address for compliance. > [!quote] Your Emails, Your Domain > RelayBook uses your own SendGrid account for sending. ==You control your domain reputation, deliverability, and sending limits.== ## SendGrid Integration Campaign emails are sent through your own SendGrid account. This gives you full control over deliverability, domain authentication, and sending limits. ### Setup Steps 1. **Create a SendGrid account** at [signup.sendgrid.com](https://signup.sendgrid.com/) 2. **Authenticate your sending domain** - Add SPF and DKIM DNS records in the [SendGrid Domain Authentication](https://app.sendgrid.com/settings/sender_auth/domain/create) settings 3. **Create an API key** with "Mail Send" permission from [API Keys](https://app.sendgrid.com/settings/api_keys) 4. **Paste your API key** into RelayBook's Email Settings ### Adding Your API Key 1. Go to **Campaigns** > **Settings** 2. Paste your SendGrid API key in the **SendGrid API Key** field 3. Click **Save Settings** > [!note] Key security > Your API key is stored securely and used only for sending campaign emails from this book. Each book can have its own SendGrid configuration. ## Free Tier Sending Limit If you haven't connected your own SendGrid account, RelayBook sends campaign emails through a shared key with a limit of **100 emails per month** per book. | Setup | Monthly Limit | |-------|--------------| | **No SendGrid key** (shared) | 100 emails/month | | **Your own SendGrid key** (BYOK) | Unlimited | Your current usage is displayed at the top of the Email Settings page. When you approach the limit (80+), you'll see a warning. At 100, campaigns are paused until the next calendar month. > [!tip] Unlimited sends > Connect your own SendGrid account to remove the limit entirely. Your usage counter will show "Unlimited sends with your own key." ## Sender Identity Configure the default sender details for your campaign emails. These must match a **verified sender** in your SendGrid account. | Field | Description | Example | |-------|-------------|---------| | **From Name** | Display name recipients see | Acme Team | | **From Email** | Sender email address | [email protected] | | **Reply-To Email** | Where replies go (optional) | [email protected] | > [!tip] Verified Senders > SendGrid requires that your "From Email" matches a verified sender identity or authenticated domain. If emails fail to send, check your [SendGrid Sender Authentication](https://app.sendgrid.com/settings/sender_auth) settings. ## Company Address (CAN-SPAM) A physical mailing address is **required by law** in every marketing email (CAN-SPAM Act, GDPR). This address is automatically added to the footer of every campaign email. Fill in: - **Company Name** - **Street Address** - **City, State/Province, Postal Code** - **Country** ## Unsubscribe Links An unsubscribe link is automatically added to the footer of every campaign email. When a recipient clicks it: 1. They see a confirmation page 2. After confirming, they're removed from all future campaigns for this book 3. The scheduler automatically skips unsubscribed contacts You don't need to manage unsubscribe links manually - RelayBook handles the entire flow. ## Per-Book Settings Email settings are configured **per book**. This means: - Different books can use different SendGrid accounts - Each book has its own sender identity and company address - Unsubscribe lists are book-scoped --- **Next:** Create your first [[Email Templates|email template]].