diff --git a/.env.example b/.env.example
index 0e1b3d41..fec9abfa 100644
--- a/.env.example
+++ b/.env.example
@@ -8,9 +8,6 @@ NX_POLYGON_API_KEY=
 # If using free ngrok account for webhooks
 NGROK_AUTH_TOKEN=
 
-POSTMARK_SMTP_PASS=
-NX_SESSION_SECRET=
-
 # Generate a new secret using openssl rand -base64 32
 NEXTAUTH_SECRET=
 NEXTAUTH_URL=http://localhost:4200
@@ -19,10 +16,14 @@ NX_NEXTAUTH_URL=http://localhost:4200
 NX_PLAID_SECRET=
 NX_FINICITY_APP_KEY=
 NX_FINICITY_PARTNER_SECRET=
-NX_CONVERTKIT_SECRET=
 
 # Teller API keys (https://teller.io)
 NX_TELLER_SIGNING_SECRET=
 NX_TELLER_APP_ID=
 
 NEXT_PUBLIC_ZAPIER_FEEDBACK_HOOK_URL=
+
+# Email credentials
+NX_POSTMARK_FROM_ADDRESS=account@example.com
+NX_POSTMARK_REPLY_TO_ADDRESS=support@example.com
+NX_POSTMARK_API_TOKEN=
diff --git a/README.md b/README.md
index e8425d4e..85aeb01d 100644
--- a/README.md
+++ b/README.md
@@ -51,6 +51,8 @@ cp .env.example .env
 
 Then, create a new secret using `openssl rand -base64 32` and populate `NEXTAUTH_SECRET` in your `.env` file with it.
 
+To enable transactional emails, you'll need to create a [Postmark](https://postmarkapp.com/) account and add your API key to your `.env` file (`NX_POSTMARK_API_TOKEN`). You can also set the from and reply-to email addresses (`NX_POSTMARK_FROM_ADDRESS` and `NX_POSTMARK_REPLY_TO_ADDRESS`). If you want to run the app without email, you can set `NX_POSTMARK_API_TOKEN` to a dummy value.
+
 Then run the following yarn commands:
 
 ```
diff --git a/apps/server/src/env.ts b/apps/server/src/env.ts
index 33d85133..e69f5f4d 100644
--- a/apps/server/src/env.ts
+++ b/apps/server/src/env.ts
@@ -29,7 +29,6 @@ const envSchema = z.object({
 
     NX_DATABASE_URL: z.string(),
     NX_DATABASE_SECRET: z.string(),
-    NX_SESSION_SECRET: z.string(),
 
     NX_NGROK_URL: z.string().default('http://localhost:4551'),