Monthly Archives: June 2010

Which protocol should I use to send email, SMTP or REST?

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We get asked quite often why we recommend customers use SMTP to send email to SendGrid, as opposed to using our REST API, and where one would be used over the other.  For options on how to integrate with SendGrid go here. To start, the absolute best method to send email through SendGrid is to set up a local mail server that queues all email from your application, and then relays the messages through SendGrid as a smart host.  This will have the least latency from your application’s perspective, and has the added benefit of handing your email off to