To be able to sent both HTML and text emails using net.smtp (multipart/alternative Content-Type)

[khalyomede]

Describe the feature

To be able to send both text and HTML emails as part of a single sending.

Use Case

Some spam filters may consider emails as SPAM if it omit a text alternative. Having a text alternative as well as HTML is also a good accessibility practice as some email client can display a simplified version of a mail if the user needs it.

Proposed Solution

// If html and text are not set, use body/body_type/attachments instead

mail := net.smtp.Mail{
  // ...
  html: net.smtp.Message{
    body: "<h1>Welcome!</h1><p>Your account has been created.</p>"
    attachments: []
  }
  text: net.smtp.Message{
    body: "Welcome! Your account has been created."
    attachments: []
  }
}

Other Information

No response

Acknowledgements

• I may be able to implement this feature request
• This feature might incur a breaking change

Version used

0.4.7

Environment details (OS name and version, etc.)

V full version: V 0.4.7 e03bd3f
OS: linux, Linux version 6.8.0-49-generic (buildd@lcy02-amd64-103) (x86_64-linux-gnu-gcc-12 (Ubuntu 12.3.0-1ubuntu122.04) 12.3.0, GNU ld (GNU Binutils for Ubuntu) 2.38) #4922.04.1-Ubuntu SMP PREEMPT_DYNAMIC Wed Nov 6 17:42:15 UTC 2
Processor: 8 cpus, 64bit, little endian, Intel(R) Core(TM) i7-10510U CPU @ 1.80GHz

getwd: /home/v
vexe: /opt/vlang/v
vexe mtime: 2024-09-26 07:47:51

vroot: OK, value: /opt/vlang
VMODULES: OK, value: /root/.vmodules
VTMP: OK, value: /tmp/v_0

env VFLAGS: "-cc gcc"

Git version: git version 2.40.3
Git vroot status: e03bd3f (708 commit(s) behind V master)
.git/config present: true

CC version: cc (Alpine 12.2.1_git20220924-r10) 12.2.1 20220924
thirdparty/tcc status: thirdparty-linuxmusl-amd64 a3e24da

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