deno(mail-server): drop custom logger, use builtin console.

9 files changed, 92 insertions, 144 deletions

diff --git a/deno/mail-relay/app.ts b/deno/mail-relay/app.ts
index d96fa1d..0b9da07 100644
--- a/deno/mail-relay/app.ts
+++ b/deno/mail-relay/app.ts
@@ -35,15 +35,11 @@ export function createInbound(
   return deliverer;
 }
 
-export function createHono(
-  logger: Logger,
-  outbound: MailDeliverer,
-  inbound: MailDeliverer,
-) {
+export function createHono(outbound: MailDeliverer, inbound: MailDeliverer) {
   const hono = new Hono();
 
   hono.onError((err, c) => {
-    logger.error("Hono handler throws an error.", err);
+    console.error("Hono handler throws an error.", err);
     return c.json({ msg: "Server error, check its log." }, 500);
   });
   hono.use(honoLogger());
@@ -66,11 +62,11 @@ export function createHono(
   return hono;
 }
 
-export function createSmtp(logger: Logger, outbound: MailDeliverer) {
-  return new DumbSmtpServer(logger, outbound);
+export function createSmtp(outbound: MailDeliverer) {
+  return new DumbSmtpServer(outbound);
 }
 
-export async function sendMail(logger: Logger, port: number) {
+export async function sendMail(port: number) {
   const decoder = new TextDecoder();
   let text = "";
   for await (const chunk of Deno.stdin.readable) {
@@ -81,9 +77,8 @@ export async function sendMail(logger: Logger, port: number) {
     method: "post",
     body: text,
   });
-  logger.write(Deno.inspect(res), { level: res.ok ? "info" : "error" });
-  logger.write(Deno.inspect(await res.text()), {
-    level: res.ok ? "info" : "error",
-  });
+  const fn = res.ok ? "info" : "error";
+  console[fn](res);
+  console[fn](await res.text());
   if (!res.ok) Deno.exit(-1);
 }
diff --git a/deno/mail-relay/aws/app.ts b/deno/mail-relay/aws/app.ts
index 05d93cd..b7d0154 100644
--- a/deno/mail-relay/aws/app.ts
+++ b/deno/mail-relay/aws/app.ts
@@ -94,11 +94,10 @@ function createAwsOptions({
 }
 
 function createOutbound(
-  logger: Logger,
   awsOptions: ReturnType<typeof createAwsOptions>,
   db: DbService,
 ) {
-  const deliverer = new AwsMailDeliverer(logger, awsOptions);
+  const deliverer = new AwsMailDeliverer(awsOptions);
   deliverer.preHooks.push(
     new AwsMailMessageIdRewriteHook(db.messageIdToAws.bind(db)),
   );
@@ -168,11 +167,7 @@ function createAwsFetchOnlyServices() {
     password: config.get("awsPassword"),
     region: config.get("awsRegion"),
   });
-  const fetcher = new AwsMailFetcher(
-    logger,
-    awsOptions,
-    config.get("awsMailBucket"),
-  );
+  const fetcher = new AwsMailFetcher(awsOptions, config.get("awsMailBucket"));
   return { config, logger, awsOptions, fetcher };
 }
 
@@ -195,7 +190,7 @@ function createAwsServices() {
   const { config, logger, inbound, awsOptions, fetcher, recycler } =
     createAwsRecycleOnlyServices();
   const dbService = new DbService(join(config.get("dataPath"), "db.sqlite"));
-  const outbound = createOutbound(logger, awsOptions, dbService);
+  const outbound = createOutbound(awsOptions, dbService);
 
   return {
     config,
@@ -211,10 +206,10 @@ function createAwsServices() {
 
 function createServerServices() {
   const services = createAwsServices();
-  const { logger, config, outbound, inbound, fetcher } = services;
-  const smtp = createSmtp(logger, outbound);
+  const { config, outbound, inbound, fetcher } = services;
+  const smtp = createSmtp(outbound);
 
-  const hono = createHono(logger, outbound, inbound);
+  const hono = createHono(outbound, inbound);
   setupAwsHono(hono, {
     path: config.get("awsInboundPath"),
     auth: config.get("awsInboundKey"),
@@ -252,11 +247,11 @@ function serve(cron: boolean = false) {
 }
 
 async function listLives() {
-  const { logger, fetcher } = createAwsFetchOnlyServices();
+  const { fetcher } = createAwsFetchOnlyServices();
   const liveMails = await fetcher.listLiveMails();
-  logger.info(`Total ${liveMails.length}:`);
+  console.info(`Total ${liveMails.length}:`);
   if (liveMails.length !== 0) {
-    logger.info(liveMails.join("\n"));
+    console.info(liveMails.join("\n"));
   }
 }
 
@@ -272,8 +267,8 @@ if (import.meta.main) {
       command: "sendmail",
       describe: "send mail via this server's endpoint",
       handler: async (_argv) => {
-        const { logger, config } = createBaseServices();
-        await sendMail(logger, config.getInt("httpPort"));
+        const { config } = createBaseServices();
+        await sendMail(config.getInt("httpPort"));
       },
     })
     .command({
diff --git a/deno/mail-relay/aws/deliver.ts b/deno/mail-relay/aws/deliver.ts
index 117e87a..a002eda 100644
--- a/deno/mail-relay/aws/deliver.ts
+++ b/deno/mail-relay/aws/deliver.ts
@@ -4,7 +4,6 @@ import {
   SESv2ClientConfig,
 } from "@aws-sdk/client-sesv2";
 
-import { Logger } from "@crupest/base/log";
 import { Mail, MailDeliverContext, SyncMailDeliverer } from "../mail.ts";
 
 declare module "../mail.ts" {
@@ -15,13 +14,11 @@ declare module "../mail.ts" {
 
 export class AwsMailDeliverer extends SyncMailDeliverer {
   readonly name = "aws";
-  readonly #logger;
   readonly #aws;
   readonly #ses;
 
-  constructor(logger: Logger, aws: SESv2ClientConfig) {
-    super(logger);
-    this.#logger = logger;
+  constructor(aws: SESv2ClientConfig) {
+    super();
     this.#aws = aws;
     this.#ses = new SESv2Client(aws);
   }
@@ -30,7 +27,7 @@ export class AwsMailDeliverer extends SyncMailDeliverer {
     mail: Mail,
     context: MailDeliverContext,
   ): Promise<void> {
-    this.#logger.info("Begin to call aws send-email api...");
+    console.info("Begin to call aws send-email api...");
 
     try {
       const sendCommand = new SendEmailCommand({
@@ -41,9 +38,11 @@ export class AwsMailDeliverer extends SyncMailDeliverer {
 
       const res = await this.#ses.send(sendCommand);
       if (res.MessageId == null) {
-        this.#logger.warn("Aws send-email returns no message id.");
+        console.warn("Aws send-email returns no message id.");
       } else {
-        context.result.awsMessageId = `${res.MessageId}@${this.#aws.region}.amazonses.com`;
+        context.result.awsMessageId = `${res.MessageId}@${
+          this.#aws.region
+        }.amazonses.com`;
       }
 
       context.result.recipients.set("*", {
diff --git a/deno/mail-relay/aws/fetch.ts b/deno/mail-relay/aws/fetch.ts
index ef1ba5f..bbb671a 100644
--- a/deno/mail-relay/aws/fetch.ts
+++ b/deno/mail-relay/aws/fetch.ts
@@ -8,7 +8,6 @@ import {
 } from "@aws-sdk/client-s3";
 
 import { toFileNameString } from "@crupest/base/date";
-import { Logger } from "@crupest/base/log";
 
 import { Mail } from "../mail.ts";
 
@@ -42,18 +41,16 @@ export type AwsS3MailConsumer = (
 export class AwsMailFetcher {
   readonly #livePrefix = "mail/live/";
   readonly #archivePrefix = "mail/archive/";
-  readonly #logger;
   readonly #s3;
   readonly #bucket;
 
-  constructor(logger: Logger, aws: S3ClientConfig, bucket: string) {
-    this.#logger = logger;
+  constructor(aws: S3ClientConfig, bucket: string) {
     this.#s3 = new S3Client(aws);
     this.#bucket = bucket;
   }
 
   async listLiveMails(): Promise<string[]> {
-    this.#logger.info("Begin to retrieve live mails.");
+    console.info("Begin to retrieve live mails.");
 
     const listCommand = new ListObjectsV2Command({
       Bucket: this.#bucket,
@@ -62,16 +59,14 @@ export class AwsMailFetcher {
     const res = await this.#s3.send(listCommand);
 
     if (res.Contents == null) {
-      this.#logger.warn("Listing live mails in S3 returns null Content.");
+      console.warn("Listing live mails in S3 returns null Content.");
       return [];
     }
 
     const result: string[] = [];
     for (const object of res.Contents) {
       if (object.Key == null) {
-        this.#logger.warn(
-          "Listing live mails in S3 returns an object with no Key.",
-        );
+        console.warn("Listing live mails in S3 returns an object with no Key.");
         continue;
       }
 
@@ -83,9 +78,9 @@ export class AwsMailFetcher {
   }
 
   async consumeS3Mail(s3Key: string, consumer: AwsS3MailConsumer) {
-    this.#logger.info(`Begin to consume s3 mail ${s3Key} ...`);
+    console.info(`Begin to consume s3 mail ${s3Key} ...`);
 
-    this.#logger.info(`Fetching s3 mail ${s3Key}...`);
+    console.info(`Fetching s3 mail ${s3Key}...`);
     const mailPath = `${this.#livePrefix}${s3Key}`;
     const command = new GetObjectCommand({
       Bucket: this.#bucket,
@@ -98,14 +93,14 @@ export class AwsMailFetcher {
     }
 
     const rawMail = await res.Body.transformToString();
-    this.#logger.info(`Done fetching s3 mail ${s3Key}.`);
+    console.info(`Done fetching s3 mail ${s3Key}.`);
 
-    this.#logger.info(`Calling consumer...`);
+    console.info(`Calling consumer...`);
     await consumer(rawMail, s3Key);
-    this.#logger.info(`Done consuming s3 mail ${s3Key}.`);
+    console.info(`Done consuming s3 mail ${s3Key}.`);
 
     const date = new Mail(rawMail)
-      .startSimpleParse(this.#logger)
+      .startSimpleParse()
       .sections()
       .headers()
       .date();
@@ -113,17 +108,17 @@ export class AwsMailFetcher {
       date != null ? toFileNameString(date, true) : "invalid-date";
     const newPath = `${this.#archivePrefix}${dateString}/${s3Key}`;
 
-    this.#logger.info(`Archiving s3 mail ${s3Key} to ${newPath}...`);
+    console.info(`Archiving s3 mail ${s3Key} to ${newPath}...`);
     await s3MoveObject(this.#s3, this.#bucket, mailPath, newPath);
-    this.#logger.info(`Done archiving s3 mail ${s3Key}.`);
+    console.info(`Done archiving s3 mail ${s3Key}.`);
 
-    this.#logger.info(`Done consuming s3 mail ${s3Key}.`);
+    console.info(`Done consuming s3 mail ${s3Key}.`);
   }
 
   async recycleLiveMails(consumer: AwsS3MailConsumer) {
-    this.#logger.info("Begin to recycle live mails...");
+    console.info("Begin to recycle live mails...");
     const mails = await this.listLiveMails();
-    this.#logger.info(`Found ${mails.length} live mails`);
+    console.info(`Found ${mails.length} live mails`);
     for (const s3Key of mails) {
       await this.consumeS3Mail(s3Key, consumer);
     }
diff --git a/deno/mail-relay/aws/mail.ts b/deno/mail-relay/aws/mail.ts
index d2cfad1..cc05d23 100644
--- a/deno/mail-relay/aws/mail.ts
+++ b/deno/mail-relay/aws/mail.ts
@@ -8,17 +8,17 @@ export class AwsMailMessageIdRewriteHook implements MailDeliverHook {
   }
 
   async callback(context: MailDeliverContext): Promise<void> {
-    context.logger.info("Rewrite message ids...");
+    console.info("Rewrite message ids...");
     const addresses = context.mail.simpleFindAllAddresses();
-    context.logger.info(`Addresses found in mail: ${addresses.join(", ")}.`);
+    console.info(`Addresses found in mail: ${addresses.join(", ")}.`);
     for (const address of addresses) {
       const awsMessageId = await this.#lookup(address);
       if (awsMessageId != null && awsMessageId.length !== 0) {
-        context.logger.info(`Rewrite ${address} to ${awsMessageId}.`);
+        console.info(`Rewrite ${address} to ${awsMessageId}.`);
         context.mail.raw = context.mail.raw.replaceAll(address, awsMessageId);
       }
     }
-    context.logger.info("Done rewrite message ids.");
+    console.info("Done rewrite message ids.");
   }
 }
 
@@ -30,24 +30,20 @@ export class AwsMailMessageIdSaveHook implements MailDeliverHook {
   }
 
   async callback(context: MailDeliverContext): Promise<void> {
-    context.logger.info("Save aws message ids...");
+    console.info("Save aws message ids...");
     const messageId = context.mail
-      .startSimpleParse(context.logger)
+      .startSimpleParse()
       .sections()
       .headers()
       .messageId();
     if (messageId == null) {
-      context.logger.info(
-        "Original mail does not have message id. Skip saving.",
-      );
+      console.info("Original mail does not have message id. Skip saving.");
       return;
     }
     if (context.result.awsMessageId != null) {
-      context.logger.info(
-        `Saving ${messageId} => ${context.result.awsMessageId}.`,
-      );
+      console.info(`Saving ${messageId} => ${context.result.awsMessageId}.`);
       await this.#record(messageId, context.result.awsMessageId);
     }
-    context.logger.info("Done save message ids.");
+    console.info("Done save message ids.");
   }
 }
diff --git a/deno/mail-relay/dovecot.ts b/deno/mail-relay/dovecot.ts
index 124a82b..748d6fa 100644
--- a/deno/mail-relay/dovecot.ts
+++ b/deno/mail-relay/dovecot.ts
@@ -6,10 +6,12 @@ import { Mail, MailDeliverContext, MailDeliverer } from "./mail.ts";
 
 export class DovecotMailDeliverer extends MailDeliverer {
   readonly name = "dovecot";
+  readonly #logger;
   readonly #ldaPath;
 
   constructor(logger: Logger, ldaPath: string) {
-    super(logger);
+    super();
+    this.#logger = logger;
     this.#ldaPath = ldaPath;
   }
 
@@ -29,12 +31,12 @@ export class DovecotMailDeliverer extends MailDeliverer {
       return;
     }
 
-    this.logger.info(`Deliver to dovecot users: ${recipients.join(", ")}.`);
+    console.info(`Deliver to dovecot users: ${recipients.join(", ")}.`);
 
     for (const recipient of recipients) {
       try {
         const commandArgs = ["-d", recipient];
-        this.logger.info(`Run ${ldaBinName} ${commandArgs.join(" ")}...`);
+        console.info(`Run ${ldaBinName} ${commandArgs.join(" ")}...`);
 
         const ldaCommand = new Deno.Command(ldaPath, {
           args: commandArgs,
@@ -45,7 +47,7 @@ export class DovecotMailDeliverer extends MailDeliverer {
 
         const ldaProcess = ldaCommand.spawn();
         using logFiles =
-          await this.logger.createExternalLogStreamsForProgram(ldaBinName);
+          await this.#logger.createExternalLogStreamsForProgram(ldaBinName);
         ldaProcess.stdout.pipeTo(logFiles.stdout);
         ldaProcess.stderr.pipeTo(logFiles.stderr);
 
@@ -90,6 +92,6 @@ export class DovecotMailDeliverer extends MailDeliverer {
       }
     }
 
-    this.logger.info("Done handling all recipients.");
+    console.info("Done handling all recipients.");
   }
 }
diff --git a/deno/mail-relay/dumb-smtp-server.ts b/deno/mail-relay/dumb-smtp-server.ts
index 1a1090a..ac7069c 100644
--- a/deno/mail-relay/dumb-smtp-server.ts
+++ b/deno/mail-relay/dumb-smtp-server.ts
@@ -1,4 +1,3 @@
-import { Logger } from "@crupest/base/log";
 import { MailDeliverer } from "./mail.ts";
 
 const CRLF = "\r\n";
@@ -20,26 +19,24 @@ function createResponses(host: string, port: number | string) {
 const LOG_TAG = "[dumb-smtp]";
 
 export class DumbSmtpServer {
-  #logger;
   #deliverer;
   #responses: ReturnType<typeof createResponses> = createResponses(
     "invalid",
     "invalid",
   );
 
-  constructor(logger: Logger, deliverer: MailDeliverer) {
-    this.#logger = logger;
+  constructor(deliverer: MailDeliverer) {
     this.#deliverer = deliverer;
   }
 
   async #handleConnection(conn: Deno.Conn) {
     using disposeStack = new DisposableStack();
     disposeStack.defer(() => {
-      this.#logger.tagInfo(LOG_TAG, "Close session's tcp connection.");
+      console.info(LOG_TAG, "Close session's tcp connection.");
       conn.close();
     });
 
-    this.#logger.tagInfo(LOG_TAG, "New session's tcp connection established.");
+    console.info(LOG_TAG, "New session's tcp connection established.");
 
     const writer = conn.writable.getWriter();
     disposeStack.defer(() => writer.releaseLock());
@@ -49,7 +46,7 @@ export class DumbSmtpServer {
     const [decoder, encoder] = [new TextDecoder(), new TextEncoder()];
     const decode = (data: Uint8Array) => decoder.decode(data);
     const send = async (s: string) => {
-      this.#logger.tagInfo(LOG_TAG, "Send line: " + s);
+      console.info(LOG_TAG, "Send line: " + s);
       await writer.write(encoder.encode(s + CRLF));
     };
 
@@ -72,7 +69,7 @@ export class DumbSmtpServer {
         buffer = buffer.slice(eolPos + CRLF.length);
 
         if (rawMail == null) {
-          this.#logger.tagInfo(LOG_TAG, "Received line: " + line);
+          console.info(LOG_TAG, "Received line: " + line);
           const upperLine = line.toUpperCase();
           if (upperLine.startsWith("EHLO") || upperLine.startsWith("HELO")) {
             await send(this.#responses["EHLO"]);
@@ -82,32 +79,26 @@ export class DumbSmtpServer {
             await send(this.#responses["RCPT"]);
           } else if (upperLine === "DATA") {
             await send(this.#responses["DATA"]);
-            this.#logger.tagInfo(LOG_TAG, "Begin to receive mail data...");
+            console.info(LOG_TAG, "Begin to receive mail data...");
             rawMail = "";
           } else if (upperLine === "QUIT") {
             await send(this.#responses["QUIT"]);
             return;
           } else {
-            this.#logger.tagWarn(
-              LOG_TAG,
-              "Unrecognized command from client: " + line,
-            );
+            console.warn(LOG_TAG, "Unrecognized command from client: " + line);
             await send(this.#responses["INVALID"]);
             return;
           }
         } else {
           if (line === ".") {
             try {
-              this.#logger.tagInfo(
-                LOG_TAG,
-                "Mail data Received, begin to relay...",
-              );
+              console.info(LOG_TAG, "Mail data Received, begin to relay...");
               const { message } = await this.#deliverer.deliverRaw(rawMail);
               await send(`250 2.6.0 ${message}`);
               rawMail = null;
-              this.#logger.tagInfo(LOG_TAG, "Relay succeeded.");
+              console.info(LOG_TAG, "Relay succeeded.");
             } catch (err) {
-              this.#logger.tagError(LOG_TAG, "Relay failed.", err);
+              console.error(LOG_TAG, "Relay failed.", err);
               await send("554 5.3.0 Error: check server log");
               return;
             }
@@ -123,7 +114,7 @@ export class DumbSmtpServer {
   async serve(options: { hostname: string; port: number }) {
     const listener = Deno.listen(options);
     this.#responses = createResponses(options.hostname, options.port);
-    this.#logger.tagInfo(
+    console.info(
       LOG_TAG,
       `Dumb SMTP server starts to listen on ${this.#responses.serverName}.`,
     );
@@ -132,11 +123,7 @@ export class DumbSmtpServer {
       try {
         await this.#handleConnection(conn);
       } catch (cause) {
-        this.#logger.tagError(
-          LOG_TAG,
-          "Tcp connection throws an error.",
-          cause,
-        );
+        console.error(LOG_TAG, "Tcp connection throws an error.", cause);
       }
     }
   }
diff --git a/deno/mail-relay/mail.test.ts b/deno/mail-relay/mail.test.ts
index 09cf8eb..6abb7d7 100644
--- a/deno/mail-relay/mail.test.ts
+++ b/deno/mail-relay/mail.test.ts
@@ -1,8 +1,6 @@
 import { describe, it } from "@std/testing/bdd";
 import { expect, fn } from "@std/expect";
 
-import { Logger } from "@crupest/base/log";
-
 import { Mail, MailDeliverContext, MailDeliverer } from "./mail.ts";
 
 const mockDate = "Fri, 02 May 2025 08:33:02 +0000";
@@ -119,7 +117,7 @@ describe("MailDeliverer", () => {
       return Promise.resolve();
     }) as MailDeliverer["doDeliver"];
   }
-  const mockDeliverer = new MockMailDeliverer(new Logger());
+  const mockDeliverer = new MockMailDeliverer();
 
   it("deliver success", async () => {
     await mockDeliverer.deliverRaw(mockMailStr);
diff --git a/deno/mail-relay/mail.ts b/deno/mail-relay/mail.ts
index 12d5972..d6dfe65 100644
--- a/deno/mail-relay/mail.ts
+++ b/deno/mail-relay/mail.ts
@@ -2,19 +2,10 @@ import { encodeBase64 } from "@std/encoding/base64";
 import { parse } from "@std/csv/parse";
 import emailAddresses from "email-addresses";
 
-import { Logger } from "@crupest/base/log";
-
 class MailSimpleParseError extends Error {}
 
 class MailSimpleParsedHeaders {
-  #logger;
-
-  constructor(
-    logger: Logger | undefined,
-    public fields: [key: string, value: string][],
-  ) {
-    this.#logger = logger;
-  }
+  constructor(public fields: [key: string, value: string][]) {}
 
   getFirst(fieldKey: string): string | undefined {
     for (const [key, value] of this.fields) {
@@ -31,9 +22,7 @@ class MailSimpleParsedHeaders {
     if (match != null) {
       return match[1];
     } else {
-      this.#logger?.warn(
-        "Invalid message-id header of mail: " + messageIdField,
-      );
+      console.warn("Invalid message-id header of mail: " + messageIdField);
       return undefined;
     }
   }
@@ -44,7 +33,7 @@ class MailSimpleParsedHeaders {
 
     const date = new Date(dateField);
     if (invalidToUndefined && isNaN(date.getTime())) {
-      this.#logger?.warn(`Invalid date string (${dateField}) found in header.`);
+      console.warn(`Invalid date string (${dateField}) found in header.`);
       return undefined;
     }
     return date;
@@ -76,11 +65,7 @@ class MailSimpleParsedSections {
   eol: string;
   sep: string;
 
-  #logger;
-
-  constructor(logger: Logger | undefined, raw: string) {
-    this.#logger = logger;
-
+  constructor(raw: string) {
     const twoEolMatch = raw.match(/(\r?\n)(\r?\n)/);
     if (twoEolMatch == null) {
       throw new MailSimpleParseError(
@@ -91,7 +76,7 @@ class MailSimpleParsedSections {
     const [eol, sep] = [twoEolMatch[1], twoEolMatch[2]];
 
     if (eol !== sep) {
-      logger?.warn("Different EOLs (\\r\\n, \\n) found.");
+      console.warn("Different EOLs (\\r\\n, \\n) found.");
     }
 
     this.header = raw.slice(0, twoEolMatch.index!);
@@ -131,7 +116,7 @@ class MailSimpleParsedSections {
 
     handleField();
 
-    return new MailSimpleParsedHeaders(this.#logger, headers);
+    return new MailSimpleParsedHeaders(headers);
   }
 }
 
@@ -147,8 +132,8 @@ export class Mail {
     return encodeBase64(this.raw);
   }
 
-  startSimpleParse(logger?: Logger) {
-    return { sections: () => new MailSimpleParsedSections(logger, this.raw) };
+  startSimpleParse() {
+    return { sections: () => new MailSimpleParsedSections(this.raw) };
   }
 
   simpleFindAllAddresses(): string[] {
@@ -195,10 +180,7 @@ export class MailDeliverContext {
   readonly recipients: Set<string> = new Set();
   readonly result;
 
-  constructor(
-    public readonly logger: Logger,
-    public mail: Mail,
-  ) {
+  constructor(public mail: Mail) {
     this.result = new MailDeliverResult(this.mail);
   }
 }
@@ -212,8 +194,6 @@ export abstract class MailDeliverer {
   preHooks: MailDeliverHook[] = [];
   postHooks: MailDeliverHook[] = [];
 
-  constructor(protected readonly logger: Logger) {}
-
   protected abstract doDeliver(
     mail: Mail,
     context: MailDeliverContext,
@@ -227,9 +207,9 @@ export abstract class MailDeliverer {
     mail: Mail;
     recipients?: string[];
   }): Promise<MailDeliverResult> {
-    this.logger.info(`Begin to deliver mail via ${this.name}...`);
+    console.info(`Begin to deliver mail via ${this.name}...`);
 
-    const context = new MailDeliverContext(this.logger, options.mail);
+    const context = new MailDeliverContext(options.mail);
     options.recipients?.forEach((r) => context.recipients.add(r));
 
     for (const hook of this.preHooks) {
@@ -242,7 +222,8 @@ export abstract class MailDeliverer {
       await hook.callback(context);
     }
 
-    context.logger.info("Deliver result:\n" + Deno.inspect(context.result));
+    console.info("Deliver result:");
+    console.info(context.result);
 
     if (context.result.hasError()) {
       throw new Error("Mail failed to deliver.");
@@ -259,7 +240,7 @@ export abstract class SyncMailDeliverer extends MailDeliverer {
     mail: Mail;
     recipients?: string[];
   }): Promise<MailDeliverResult> {
-    this.logger.info(
+    console.info(
       "The mail deliverer is sync. Wait for last delivering done...",
     );
     await this.#last;
@@ -277,12 +258,12 @@ export class RecipientFromHeadersHook implements MailDeliverHook {
 
   callback(context: MailDeliverContext) {
     if (context.recipients.size !== 0) {
-      context.logger.warn(
+      console.warn(
         "Recipients are already filled. Won't set them with ones in headers.",
       );
     } else {
       context.mail
-        .startSimpleParse(context.logger)
+        .startSimpleParse()
         .sections()
         .headers()
         .recipients({
@@ -290,7 +271,7 @@ export class RecipientFromHeadersHook implements MailDeliverHook {
         })
         .forEach((r) => context.recipients.add(r));
 
-      context.logger.info(
+      console.info(
         "Recipients found from mail headers: " +
           [...context.recipients].join(", "),
       );
@@ -304,7 +285,7 @@ export class FallbackRecipientHook implements MailDeliverHook {
 
   callback(context: MailDeliverContext) {
     if (context.recipients.size === 0) {
-      context.logger.info(
+      console.info(
         "No recipients, fill with fallback: " + [...this.fallback].join(", "),
       );
       this.fallback.forEach((a) => context.recipients.add(a));
@@ -320,10 +301,10 @@ export class AliasRecipientMailHook implements MailDeliverHook {
     this.#aliasFile = aliasFile;
   }
 
-  async #parseAliasFile(logger: Logger): Promise<Map<string, string>> {
+  async #parseAliasFile(): Promise<Map<string, string>> {
     const result = new Map();
     if ((await Deno.stat(this.#aliasFile)).isFile) {
-      logger.info(`Found recipients alias file: ${this.#aliasFile}.`);
+      console.info(`Found recipients alias file: ${this.#aliasFile}.`);
       const text = await Deno.readTextFile(this.#aliasFile);
       const csv = parse(text);
       for (const [real, ...aliases] of csv) {
@@ -334,11 +315,11 @@ export class AliasRecipientMailHook implements MailDeliverHook {
   }
 
   async callback(context: MailDeliverContext) {
-    const aliases = await this.#parseAliasFile(context.logger);
+    const aliases = await this.#parseAliasFile();
     for (const recipient of [...context.recipients]) {
       const realRecipients = aliases.get(recipient);
       if (realRecipients != null) {
-        context.logger.info(
+        console.info(
           `Recipient alias resolved: ${recipient} => ${realRecipients}.`,
         );
         context.recipients.delete(recipient);