SendGrid's smtpapi library in PHP

License: MIT

Language: PHP

BuildStatus Latest Stable Version

This module helps build SendGrid's SMTP API headers.

Learn more about the SMTP API at SendGrid's documentation.


All updates to this module is documented in our CHANGELOG.



  • PHP version 5.6 or 7.0
  • The SendGrid service, starting at the free level

Install with Composer

The following recommended installation requires

Add the following to your composer.json file.

    "require": {
        "sendgrid/smtpapi": "~0.6@dev"

Then at the top of your script require the autoloader:

require 'vendor/autoload.php';

Alternative: Install from zip

If you are not using Composer, simply download and install the latest packaged release of the library as a zip.

Then require the library from package:


Previous versions of the library can be found in the version index.

Quick Start

$header = new Smtpapi\Header();
print $header->jsonString();



If you are intersted in the future direction of this project, please take a look at our milestones. We would love to hear your feedback.

How to Contribute

We encourage contribution to our projects, please see our CONTRIBUTING guide for details.

Quick links:


smtpapi-php is guided and supported by the SendGrid Developer Experience Team.

smtpapi-php is maintained and funded by SendGrid, Inc. The names and logos for smtpapi-php are trademarks of SendGrid, Inc.

![SendGrid Logo] (

Project Statistics

Sourcerank 11
Repository Size 132 KB
Stars 50
Forks 63
Watchers 168
Open issues 30
Dependencies 2
Contributors 12
Tags 9
Last updated
Last pushed

Top Contributors See all

Mot Elmer Thomas Eddie Zaneski Joris Berthelot Nikolas Wataru Sato SendGrid's DX Team Nick Quinlan Sorin Baba Matt Bernier Stephen Felt Robert Gründler

Packages Referencing this Repo

Build SendGrid X-SMTPAPI headers in PHP.
Latest release 0.6.1 - Updated - 50 stars

Recent Tags See all

v0.6.1 July 06, 2017
v0.6.0 July 05, 2017
v0.6.0 July 05, 2017
v0.5.0 April 14, 2015
v0.4.0 March 27, 2015
v0.3.0 March 27, 2015
v0.2.0 January 24, 2015
v0.1.0 December 17, 2014
v0.0.1 January 01, 2014

Interesting Forks See all

Build SendGrid X-SMTPAPI headers in PHP.
PHP - Last pushed - 1 stars

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