dokku-letsencrypt VS sendgrid-nodejs

# plugin installation requires root, hence the user change sudo dokku plugin:install https://github.com/dokku/dokku-letsencrypt.git

downloads and installs dokku-letsencrypt on server

$ sudo dokku plugin:install https://github.com/dokku/dokku-letsencrypt.git $ dokku config:set --global [email protected] $ dokku domains:set app-name your-domain.com $ dokku letsencrypt:enable app-name $ dokku letsencrypt:cron-job --add

You need SSL certificate for your website. With Dokku you can add it in several ways, using official Let's Encypt plugin, or using your own certificate, or using a Cloudflare SSL. Any of these do, but don't neglect this step.

There are env vars you need to configure so let’s encrypt knows your email address. The plugin docs are worth reading: https://github.com/dokku/dokku-letsencrypt

# on Dokku host sudo dokku plugin:install https://github.com/dokku/dokku-letsencrypt.git

Right now (when I wrote this post), there is no wildcard support from dokku-letsencrypt plugin. Luckily, Dokku itself can use certificates from other sources.

As you may have noticed, our application is available on our Dokku host now – but only in an unencrypted fashion (note the lack of https in the address bar). Thankfully, we live in the age of LetsEncrypt offering free TLS certificates, and Dokku makes it easy to enable automatic certificate retrieval and setup for our application via the dokku-letsencrypt plugin. I strongly recommend setting up this plugin so that people using our application can enjoy securely encrypted web-traffic. Once installed (see installation and initial setup instructions), we can enable the LetsEncrypt integration for our application with a single command:

You will need an API key from SendGrid to use this package. You can get one by signing up for a free account at https://sendgrid.com/.

Formspark is a great service for this with a generous free tier. If you end up scaling up and need more and/or advanced transactional emails you may consider an email API like SendGrid, Amazon SES, or Waypoint.

SendGrid. An industry-leading email API with good deliverability and a comprehensive suite of analytics.

Solution: Read on to learn how to build a personal marathon training plan generator Streamlit-hosted app from personal workout data using the Strava API, LangChain agents, chains, few-shot prompt templating, PromptTemplates, OpenAI, and SendGrid. This can also be applied to personal training, nutrition, and more!

Sendgrid, Mailgun, or Postmark are great solutions if you have a need for transactional emails that are technical. I still prefer using Customer.io for this need. If you’re unsure what transactional emails are, check out this guide.

Email is sent via an event. I have a Lambda function triggered off an EventBridge rule in my serverless toolbox that will send an email via SendGrid. This allows me to reuse that functionality across all my projects, once again minimizing the amount of resources I have allocated in the cloud.

SendGrid

You could consider to use some email delivery service like Mailgun or Sendgrid. They offer free tiers and their servers are more accepted than some random self-hosted server.

First let's set up a Sendgrid account. Sendgrid has a free tier that enables 100 free emails a day. So let's sign up at https://sendgrid.com/.

Visit the SendGrid website and sign up for a free account. To create your account, provide the required information, including your email address and password.