Gomail VS SendGrid

In the first iterations of js-mailer I used the popular go-gomail/gomail package for handling the mail sending part. Unfortunately the project isn't maintained anymore and uses some pretty outdated opinions on how to handle the mail sending.

I use Gomail for send emails, of course some SMTP server is required, but you can google many free variants for testing. Send method is very simple:

There’s a number of resources ready to work with Go that you can utilize. Mailgun offers its own SDK for Go. SendGrid also comes with its own community-driven Go library. If Mailjet is your choice, you’ll also find numerous code samples for Golang in their REST API docs. If you prefer other platforms, you’ll likely find other user-made libraries to make integration smoother.

You're right on both of these, and I'm not settled on this at all. Struct initialization and element setting are something I haven't landed on yet for larger structs. Personally, I like the pattern like sendgrid uses for struct initialization (examples here). Using the context of my repo, seems like if they are just initializing a struct, they'd use NewMovie and if they are actually adding logic as part of the struct initialization, they'd use NewMovieInit (e.g. in their repo, NewV3Mail and NewV3MailInit).

the email package is sendgrid go client https://github.com/sendgrid/sendgrid-go For the attachment it takes a based64 encoded string Ex:

I like https://github.com/sendgrid/sendgrid-go for Twilio's Sendgrid. I got some good ideas from it - I like the way they do initializers and give you already initialized maps and slices, etc.