NAME

NAME
WWW::Postmark - API for the Postmark mail service for web applications.

SYNOPSIS
use WWW::Postmark;

my $api = WWW::Postmark->new('api_token');

# or, if you want to use SSL
my $api = WWW::Postmark->new('api_token', 1);

# send an email
$api->send(from => '[email protected]', to => '[email protected], [email protected]',
subject => 'an email message', body => "hi guys, what's up?");

DESCRIPTION
The WWW::Postmark module provides a simple API for the Postmark web
service, that provides email sending facilities for web applications.
Postmark is located at <http://postmarkapp.com>. It is a paid service
that charges according the amount of emails you send, and requires
signing up in order to receive an API token.

You can send emails either through HTTP or HTTPS with SSL encryption.
You can send your emails to multiple recipients at once (but there's a
20 recipients limit). If WWW::Postmark receives a successful response
from the Postmark service, it will return a true value; otherwise it
will die.

To make it clear, Postmark is not an email marketing service for sending
email campaigns or newsletters to multiple subscribers at once. It's
meant for sending emails from web applications in response to certain
events, like someone signing up to your website.

Postmark provides a test API token that doesn't really send the emails.
The token is 'POSTMARK_API_TEST', and you can use it for testing
purposes (the tests in this distribution use this token).

Besides sending emails, this module also provides support for Postmark's
spam score API, which allows you to get a SpamAssassin report for an
email message. See documentation for the "spam_score()" method for more
info.

METHODS
new( [ $api_token, $use_ssl] )
Creates a new instance of this class, with a Postmark API token that
you've received from the Postmark app. By default, requests are made
through HTTP; if you want to send them with SSL encryption, pass a true
value for $use_ssl.

If you do not provide an API token, you will only be able to use
Postmark's spam score API (you will not be able to send emails).

Note that in order to use SSL, "HTTP::Tiny" requires certain
dependencies to be installed. See "SSL SUPPORT" in HTTP::Tiny for more
information.

send( %params )
Receives a hash representing the email message that should be sent and
attempts to send it through the Postmark service. If the message was
successfully sent, a hash reference of Postmark's response is returned
(refer to the relevant Postmark documentation
<http://developer.postmarkapp.com/developer-build.html#success-response>
); otherwise, this method will croak with an approriate error message
(see "DIAGNOSTICS" for a full list).

The following keys are required when using this method:

* from

The email address of the sender. Either pass the email address
itself in the format '[email protected]' or also provide a
name, like 'My Name <[email protected]>'.

* to

The email address(es) of the recipient(s). You can use both formats
as in 'to', but here you can give multiple addresses. Use a comma to
separate them. Note, however, that Postmark limits this to 20
recipients and sending will fail if you attempt to send to more than
20 addresses.

* subject

The subject of your message.

* body

The body of your message. This could be plain text, or HTML. If you
want to send HTML, be sure to open with '<html>' and close with
'</html>'. This module will look for these tags in order to find out
whether you're sending a text message or an HTML message.

Since version 0.3, however, you can explicitly specify the type of
your message, and also send both plain text and HTML. To do so, use
the "html" and/or "text" attributes. Their presence will override
"body".

* html

Instead of using "body" you can also specify the HTML content
directly.

* text

... or the plain text part of the email.

You can optionally supply the following parameters as well:

* cc, bcc

Same rules as the 'to' parameter.

* tag

Can be used to label your mail messages according to different
categories, so you can analyze statistics of your mail sendings
through the Postmark service.

* attachments

An array-ref with paths of files to attach to the email.
"WWW::Postmark" will automatically determine the MIME types of these
files and encode their contents to base64 as Postmark requires.

* reply_to

Will force recipients of your email to send their replies to this
mail address when replying to your email.

* track_opens

Set to a true value to enable Postmark's open tracking
functionality.

spam_score( $raw_email, [ $options ] )
Use Postmark's SpamAssassin API to determine the spam score of an email
message. You need to provide the raw email text to this method, with all
headers intact. If $options is 'long' (the default), this method will
return a hash-ref with a 'report' key, containing the full SpamAssasin
report, and a 'score' key, containing the spam score. If $options is
'short', only the spam score will be returned (directly, not in a
hash-ref).

If the API returns an error, this method will croak.

Note that the SpamAssassin API is currently HTTP only, there is no HTTPS
interface, so the "use_ssl" option to the "new()" method is ignored
here.

For more information about this API, go to
<http://spamcheck.postmarkapp.com>.

DIAGNOSTICS
The following exceptions are thrown by this module:

"You have not provided a Postmark API token, you cannot send emails"
This means you haven't provided the "new()" subroutine your Postmark
API token. Using the Postmark API requires an API token, received
when registering to their service via their website.

"You must provide a mail subject."
This error means you haven't given the "send()" method a subject for
your email message. Messages sent with this module must have a
subject.

"You must provide a mail body."
This error means you haven't given the "send()" method a body for
your email message. Messages sent with this module must have
content.

"You must provide a valid 'from' address in the format
'address\@domain.tld', or 'Your Name <address\@domain.tld>'."
This error means the address (or one of the addresses) you're trying
to send an email to with the "send()" method is not a valid email
address (in the sense that it *cannot* be an email address, not in
the sense that the email address does not exist (For example, "asdf"
is not a valid email address).

"You must provide a valid reply-to address, in the format
'address\@domain.tld', or 'Some Name <address\@domain.tld>'."
This error, when providing the "reply-to" parameter to the "send()"
method, means the "reply-to" value is not a valid email address.

"You must provide a valid '%s' address or addresses, in the format
'address\@domain.tld', or 'Some Name <address\@domain.tld>'. If you're
sending to multiple addresses, separate them with commas. You can send
up to 20 maximum addresses."
Like the above two error messages, but for other email fields such
as "cc" and "bcc".

"Failed sending message: %s"
This error is thrown when sending an email fails. The error message
should include the actual reason for the failure. Usually, the error
is returned by the Postmark API. For a list of errors returned by
Postmark and their meaning, take a look at
<http://developer.postmarkapp.com/developer-build.html>.

"Unknown Postmark error code %s"
This means Postmark returned an error code that this module does not
recognize. The error message should include the error code. If you
find that error code in
<http://developer.postmarkapp.com/developer-build.html>, it probably
means this is a new error code this module does not know about yet,
so please open an appropriate bug report.

"Unknown HTTP error code %s."
This means the Postmark API returned an unexpected HTTP status code.
The error message should include the status code returned.

"Failed opening attachment %s: %s"
This error means "WWW::Postmark" was unable to open a file
attachment you have supplied for reading. This could be due to
permission problem or the file not existing. The full error message
should detail the exact cause.

"You must provide the raw email text to spam_score()."
This error means you haven't passed the "spam_score()" method the
requried raw email text.

"Postmark spam score API returned error: %s"
This error means the spam score API failed parsing your raw email
text. The error message should include the actual reason for the
failure. This would be an *expected* API error. *Unexpected* API
errors will be thrown with the next error message.

"Failed determining spam score: %s"
This error means the spam score API returned an HTTP error. The
error message should include the actual error message returned.

CONFIGURATION AND ENVIRONMENT
"WWW::Postmark" requires no configuration files or environment
variables.

DEPENDENCIES
"WWW::Postmark" depends on the following CPAN modules:

* Carp

* Email::Valid

* HTTP::Tiny

* JSON::MaybeXS

* File::MimeInfo

* MIME::Base64

"WWW::Postmark" recommends Cpanel::JSON::XS for parsing JSON (the
Postmark API is JSON based). If installed, JSON::MaybeXS will
automatically load Cpanel::JSON::XS or JSON::XS. For SSL support,
IO::Socket::SSL and Net::SSLeay will also be needed.

INCOMPATIBILITIES WITH OTHER MODULES
None reported.

BUGS AND LIMITATIONS
No bugs have been reported.

Please report any bugs or feature requests to
"[email protected]", or through the web interface at
<http://rt.cpan.org/NoAuth/ReportBug.html?Queue=WWW-Postmark>.

AUTHOR
Ido Perlmuter <[email protected]>

With help from: Casimir Loeber.

LICENSE AND COPYRIGHT
Copyright (c) 2010-2015, Ido Perlmuter "[email protected]".

This module is free software; you can redistribute it and/or modify it
under the same terms as Perl itself, either version 5.8.1 or any later
version. See perlartistic and perlgpl.

The full text of the license can be found in the LICENSE file included
with this module.

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