Sync mailbox sender-choice contract

account/api-keys.mdx

@@ -138,7 +138,7 @@ Mailbox keys also stop working while their mailbox is suspended, and work again
   <Card title="Mailboxes" icon="inbox" href="/mailboxes">
     Create mailbox keys and per-integration passwords.
   </Card>
-  <Card title="API errors" icon="triangle-alert" href="/api/errors">
+  <Card title="API errors" icon="triangle-exclamation" href="/api/errors">
     Handle authentication, permission, and rate-limit errors.
   </Card>
 </Columns>

account/team-limits.mdx

@@ -85,7 +85,7 @@ Pro does not have a Sendmux-wide outgoing volume cap. Managed sending limits, co
   <Card title="API keys" icon="key" href="/account/api-keys">
     Create, rotate, and revoke scoped keys.
   </Card>
-  <Card title="API errors" icon="triangle-alert" href="/api/errors">
+  <Card title="API errors" icon="triangle-exclamation" href="/api/errors">
     Handle `limit_exceeded` responses in API clients.
   </Card>
 </Columns>

developer-tools/mailbox-api/saved-drafts.mdx

@@ -27,6 +27,8 @@ All draft requests require `mailbox.read`. Creating, editing and deleting also r
   <Step title="Edit the saved content">
     Pass the revision you last read as `expected_revision`. A `409` means another edit won: read the draft again and review the newer content before retrying. Omitted fields keep their saved values.
 
+    Mailbox draft writes reject `X-SES-TENANT`, `X-SES-CONFIGURATION-SET` and `X-SES-MESSAGE-TAGS`, regardless of letter case. Older drafts containing these headers remain readable. To clear saved custom headers, include `"custom_headers": {}` in an update.
+
     ```bash
     curl -X PATCH https://app.sendmux.ai/api/v1/mailbox/drafts/draft_123 \
       -H "Authorization: Bearer $SENDMUX_API_KEY" \

developer-tools/mailbox-api/sync.mdx

@@ -172,5 +172,5 @@ Supported `types` values are `messages`, `folders`, `threads`, `submissions`,
 
 <Columns cols={2}>
   <Card title="Mailbox API introduction" icon="book-open" href="/mailbox-api/introduction"></Card>
-  <Card title="Mailbox API errors" icon="triangle-alert" href="/mailbox-api/errors"></Card>
+  <Card title="Mailbox API errors" icon="triangle-exclamation" href="/mailbox-api/errors"></Card>
 </Columns>

developer-tools/postman.mdx

@@ -90,7 +90,7 @@ Re-import the same URL when you want the latest requests. The collection files u
 <Columns cols={2}>
   <Card
     title="Management API"
-    icon="settings"
+    icon="gear"
     href="/api/introduction"
   >
     Read authentication, permissions, response formats, and rate limits.

docs.json

@@ -344,6 +344,7 @@
             "pages": [
               "GET /mailbox/me",
               "GET /mailbox/session",
+              "GET /mailbox/sender-choices",
               "GET /mailbox/identity",
               "PATCH /mailbox/identity",
               "GET /mailbox/identities"

domains/index.mdx

@@ -131,10 +131,10 @@ Use the Management API when you want to create, list, upgrade, verify, or delete
   <Card title="Mailboxes" icon="inbox" href="/mailboxes">
     Create addresses on verified sending & receiving domains.
   </Card>
-  <Card title="Domain settings" icon="settings" href="/domains/settings">
+  <Card title="Domain settings" icon="gear" href="/domains/settings">
     Review inbound controls for sending & receiving domains.
   </Card>
-  <Card title="Sending accounts" icon="mail" href="/sending/accounts">
+  <Card title="Sending accounts" icon="envelope" href="/sending/accounts">
     Connect providers for outbound sending.
   </Card>
   <Card title="Team limits" icon="gauge" href="/account/team-limits">

getting-started/quickstart.mdx

@@ -90,7 +90,7 @@ This guide gets a new team to its first tracked email. Use the shared domain for
   <Card title="API keys" icon="key" href="/account/api-keys">
     Create scoped keys for sending, monitoring, and automation.
   </Card>
-  <Card title="Delivery logs" icon="scroll-text" href="/monitoring/dashboard-logs">
+  <Card title="Delivery logs" icon="scroll" href="/monitoring/dashboard-logs">
     Search, filter, refresh, and export delivery activity.
   </Card>
   <Card title="Webhooks" icon="webhook" href="/webhooks/setup">

integrations/email-marketing/mailwizz.mdx

@@ -192,13 +192,13 @@ Start with a controlled campaign. Check delivery logs, bounces, complaints and r
 ## Related guides
 
 <Columns cols={2}>
-  <Card title="Sending accounts" icon="mail" href="/sending/accounts">
+  <Card title="Sending accounts" icon="envelope" href="/sending/accounts">
     Add accounts and configure sender defaults, limits and routing.
   </Card>
   <Card title="Delivery groups" icon="route" href="/sending/accounts/delivery-groups">
     Keep selected sending accounts together for a chosen traffic stream.
   </Card>
-  <Card title="Dashboard and logs" icon="scroll-text" href="/monitoring/dashboard-logs">
+  <Card title="Dashboard and logs" icon="scroll" href="/monitoring/dashboard-logs">
     Review message status and investigate delivery activity.
   </Card>
   <Card title="Deliverability" icon="shield-check" href="/monitoring/deliverability">

monitoring/dashboard-logs.mdx

@@ -75,7 +75,7 @@ Use the Management API to read email metrics, list logs, and fetch one log by ID
   <Card title="Webhooks" icon="webhook" href="/webhooks/setup">
     Receive delivery and inbound events.
   </Card>
-  <Card title="Sending errors" icon="triangle-alert" href="/sending-api/errors">
+  <Card title="Sending errors" icon="triangle-exclamation" href="/sending-api/errors">
     Handle send failures in API clients.
   </Card>
   <Card title="Service status" icon="chart-line" href="https://status.sendmux.ai">

monitoring/deliverability.mdx

@@ -54,12 +54,12 @@ Provider health shows the current monitored provider status, impact, and 24-hour
 <Columns cols={2}>
   <Card
     title="Dashboard and logs"
-    icon="scroll-text"
+    icon="scroll"
     href="/monitoring/dashboard-logs"
   >
     Filter logs and export message-level data.
   </Card>
-  <Card title="Sending accounts" icon="mail" href="/sending/accounts">
+  <Card title="Sending accounts" icon="envelope" href="/sending/accounts">
     Review provider status, quotas, and routing.
   </Card>
   <Card title="Domains" icon="globe" href="/domains">