add emailing logic

src/email.ts

@@ -0,0 +1,28 @@
+import { SmtpClient } from "https://deno.land/x/smtp@v0.7.0/mod.ts";
+
+export type EmailerConfig = {
+	hostname: string;
+	port: number;
+	username: string;
+	password: string;
+};
+
+export class Emailer {
+	private client;
+	private config;
+	private sender_email;
+
+	public constructor(config: EmailerConfig, sender_email: string) {
+		this.config = config;
+		this.sender_email = sender_email;
+		this.client = new SmtpClient();
+	}
+
+	public async send(to_email: string, subject: string, content: string) {
+		const from = this.sender_email;
+		const to = to_email;
+		await this.client.connectTLS(this.config);
+		await this.client.send({ from, to, subject, content });
+		await this.client.close();
+	}
+}