# Sender signatures examples
```rust
use postmark::api::signatures::{CreateSignatureRequest, ListSignaturesRequest};
use postmark::reqwest::PostmarkClient;
use postmark::Query;
async fn signatures_examples() {
let client = PostmarkClient::builder()
.account_token("<account-token>")
.build();
let create_req = CreateSignatureRequest::builder()
.from_email("john@example.com".to_string())
.name("John".to_string())
.build();
let created = create_req.execute(&client).await.unwrap();
let list_req = ListSignaturesRequest::builder().count(50).offset(0).build();
let list = list_req.execute(&client).await.unwrap();
assert!(list.sender_signatures.iter().any(|s| s.id == created.id));
}
```