Send email API guides for every stack

curl -X POST https://api.tinyemail.com/v1/relay/email/campaign \
  -H "Content-Type: application/json" \
  -H "X-RELAY-ACCESS-TOKEN: $TINYRELAY_API_KEY" \
  --data-binary @reset.json
# HTTP 202 { "requestId": "…", "message": "SUCCESS" }

const res = await fetch("https://api.tinyemail.com/v1/relay/email/campaign", {
  method: "POST",
  headers: {
    "Content-Type": "application/json",
    "X-RELAY-ACCESS-TOKEN": process.env.TINYRELAY_API_KEY,
  },
  body: JSON.stringify(email),
});

# tinyrelay.py  (pip install requests)
import os

import requests

API_URL = "https://api.tinyemail.com/v1/relay/email/campaign"

$ch = curl_init('https://api.tinyemail.com/v1/relay/email/campaign');
curl_setopt_array($ch, [
    CURLOPT_POST           => true,
    CURLOPT_HTTPHEADER     => [
        'Content-Type: application/json',
        'X-RELAY-ACCESS-TOKEN: ' . getenv('TINYRELAY_API_KEY'),
    ],

const apiURL = "https://api.tinyemail.com/v1/relay/email/campaign"

req, err := http.NewRequest(http.MethodPost, apiURL, bytes.NewReader(payload))
req.Header.Set("Content-Type", "application/json")
req.Header.Set("X-RELAY-ACCESS-TOKEN", os.Getenv("TINYRELAY_API_KEY"))

module TinyRelay
  SEND_URI = URI("https://api.tinyemail.com/v1/relay/email/campaign")

  def self.send_email(email)
    request = Net::HTTP::Post.new(SEND_URI)
    request["X-RELAY-ACCESS-TOKEN"] = ENV.fetch("TINYRELAY_API_KEY")

# settings.py
EMAIL_BACKEND = "django.core.mail.backends.smtp.EmailBackend"
EMAIL_HOST = os.environ["TINYRELAY_SMTP_HOST"]        # [SMTP host]
EMAIL_PORT = int(os.environ["TINYRELAY_SMTP_PORT"])   # [port]
EMAIL_HOST_USER = os.environ["TINYRELAY_SMTP_USER"]
EMAIL_HOST_PASSWORD = os.environ["TINYRELAY_SMTP_PASSWORD"]

MAIL_MAILER=smtp
# Issued at onboarding
MAIL_HOST="[SMTP host]"
MAIL_PORT="[port]"
MAIL_USERNAME="[SMTP username]"
MAIL_PASSWORD="[SMTP password]"

config.action_mailer.delivery_method = :smtp
config.action_mailer.smtp_settings = {
  address:   ENV.fetch("TINYRELAY_SMTP_HOST"),           # [SMTP host]
  port:      Integer(ENV.fetch("TINYRELAY_SMTP_PORT")),  # [port]
  user_name: Rails.application.credentials.dig(:tinyrelay, :smtp_user_name),
  password:  Rails.application.credentials.dig(:tinyrelay, :smtp_password),

curl -X PATCH "https://api.supabase.com/v1/projects/$PROJECT_REF/config/auth" \
  -H "Authorization: Bearer $SUPABASE_ACCESS_TOKEN" \
  -d '{
    "smtp_host": "[SMTP host]",
    "smtp_port": "[port]",
    "smtp_user": "[SMTP username]",