Issues

• Client always send * to abort AUTH negotiation even if the server already aborted it

  emersion/go-smtp#316 · Filter by author ml1nk opened on Sep 17, 2026

• Client.Auth always inlines the SASL initial response, breaking mechanisms with a large initial response

  bug
  emersion/go-smtp#301 · Filter by author hstern opened on Jul 9, 2026

• go-smtp Server-Side Observability

  emersion/go-smtp#282 · Filter by author kingster opened on May 24, 2025
  5

• Incorrect handling of subsequent calls to Hello()

  emersion/go-smtp#281 · Filter by author Hsn723 opened on May 19, 2025

• Stabilize v1

  enhancement
  emersion/go-smtp#277 · Filter by author emersion opened on Dec 20, 2024

• Feature Request: Improve observability

  emersion/go-smtp#273 · Filter by author sapmli opened on Sep 19, 2024
  2

• Feature Request: Support for XCLIENT Command in go-smtp

  emersion/go-smtp#267 · Filter by author zzh-coders opened on Jul 15, 2024

• Support (or allow) HELP command implementation

  enhancement
  emersion/go-smtp#264 · Filter by author jackmahoney opened on May 5, 2024
  1

• Extension support status

  emersion/go-smtp#248 · Filter by author emersion opened on Jan 18, 2024

• Handle zero-byte TCP healthcheck connections

  server
  emersion/go-smtp#236 · Filter by author nimjor opened on Oct 4, 2023
  6

• client: batching commands

  clientenhancement
  emersion/go-smtp#203 · Filter by author emersion opened on Oct 21, 2022
  1

• server: DATA command timeout should close the connection

  server
  emersion/go-smtp#196 · Filter by author kayrus opened on Aug 16, 2022
  3

• Incorrect handling of the interrupted AUTH command

  server
  emersion/go-smtp#191 · Filter by author kayrus opened on Jun 13, 2022
  1

• client: textproto's bufio design causes half closed idle connections

  client
  emersion/go-smtp#185 · Filter by author kayrus opened on May 2, 2022
  2

• server: handleConn's return error cannot be catched

  server
  emersion/go-smtp#167 · Filter by author kayrus opened on Nov 10, 2021
  4

• Custom greeting and DATA response

  server
  emersion/go-smtp#131 · Filter by author iredmail opened on Dec 17, 2020
  9

• Replace Server.Enable* with backend Features() method

  server
  emersion/go-smtp#107 · Filter by author foxcpp opened on Jun 23, 2020

• RFC 3030 (CHUNKING, BINARYMIME) support

  clientenhancement
  emersion/go-smtp#81 · Filter by author foxcpp opened on Dec 7, 2019
  7

• Context support

  breakingenhancementquestion
  emersion/go-smtp#19 · Filter by author c4milo opened on Dec 18, 2018
  4