Send an email inside a Edge function

[nuno84]

Hi, I can send an email using SMTP in Typescript.

import { SMTPClient } from "https://deno.land/x/denomailer/mod.ts";
....
  const smtp = new SMTPClient({
    connection: {
      hostname: Deno.env.get('_SMTP_HOSTNAME')!,
      port: Number(Deno.env.get('_SMTP_PORT')!),
      tls: true,
      auth: {
        username: Deno.env.get('_SMTP_USERNAME')!,
        password: Deno.env.get('_SMTP_PASSWORD')!,
      },
    },
  });
...
await smtp.send({ ....})

However I would prefer to use Dart on the Edge functions. I tried to use the mailer library but it doesn't work. issue What is the best way to achieve this? I can't seem to find a solution in the web, which is weird because I thought it would be a usual feature. Am I overlooking something? Thank you for any tips

[MichealReed]

Use something like mailgun or another actual SMTP API. Using cloud function ips for email sending is a good way to get flagged as spam. Probably many other reasons not to do this with a serverless function too.

[nuno84]

Hi Machael, But the question is why is it possible in Typescript but there is no alternative in Dart? After all, Dart is converted to JS as well. I can't figure out a reason for it. You are saying that it is bad practice to use in Typescript also, is that it? Thank you for your time.

[MichealReed]

Yes, bad practice in both. If supabase hasn't blocked, they probably will at some point. As far as being possible in JS vs Dart, it's all about the libraries. JS/Typescript typically has more than dart, but dart is catching up.

[henry2man]

Use something like mailgun or another actual SMTP API. Using cloud function ips for email sending is a good way to get flagged as spam. Probably many other reasons not to do this with a serverless function too.

@nuno84 Maybe we should accept this as the proper solution...