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Should I use SMTP or the HTTP API?

The HTTP API has some advantages:

  • It’s faster.
  • Better for large scale sending.
  • You don’t have to deal with MIME because we will assemble it on our side.
  • Just use a request library available for your language of choice.

The advantage of SMTP is it's flexible with existing applications as you may just need to swap out the SMTP credentials.

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