SendGrid Inbound Parse Emails
Parses SendGrid’s Inbound Parse Emails into a dictionary of fields from POST parameters.
The Parse API will POST the parsed email to a URL specified in the Sendgrid settings. If POST is unsuccesful, SendGrid automatically queues and retries any POSTs that respond with a 4XX or 5XX status. To prevent redelivery or queueing of the mail, respond with 2XX. Messages that cannot be delivered after 3 days will be dropped.
See SendGrid documentation for more details.
POST Parameters
The POST parameters are available from the returned dictionary with the following keys:
- headers: raw headers of the email
- text: text body of the email. If not set, the email did not have a text body.
- html: HTML body of the email. If not set, the email did not have a HTML body.
- from: email sender taken from message headers.
- to: email recipient field taken from message headers.
- cc: email cc field taken from message headers.
- subject: email subject.
- dkim: a JSON string containing the verification results of any dkim and domain keys signatures in the message.
- SPF: results of Sender Policy Framework verification of the message sender and receiving IP address.
- envelope: JSON string containing the SMTP envelope. Has two variables:
- to: a single-element array containing the receiving address;
- from: return path of the message.
- charsets: JSON string for character set of fields extracted.
- spam_score: Spam Assassin’s rating for whether this is spam.
- spam_report: Spam Assassin’s spam report.
- attachments: List containing file objects ordered by attachment number in email. If available, file object/stream will be appended to the list. If no file objects/streams are available, the attachment dictionary keys will be appended. These keys can be then used to access the attachments. Keys are the string
attachment suffixed by n where n is in 1…N with N being the total number of attachments
- attachment-info: JSON string containing attachmentX keys with another JSON string as the value. Contains the keys filename, type (media type)
- errors: All errors are silently ignored and are returned as strings in a dictionary whose keys are the other keys. So, for e.g. an error about parsing subject is available as
mail['errors']['subject']
Helper utilities
The sendgrid_parse.helpers contains utilities for flask and django that use the correct request variables to access the POST data and attachments. These are wrappers around the parse method and do not contain any framework specific except for naming and access conventions.
Usage
The package is available under sendgrid_parse.
To install, use: pip install sendgrid_parse
# plain python (args: POST dictionary, files dictionary)
from sendgrid_parse import parse
mail = parse(post_dict, file_dict)
# for frameworks:
# flask
from sendgrid_parse.helpers.flask import parse
# django
from sendgrid_parse.helpers.django import parse
# use:
mail = parse(request)
Contains the hosted code repository. Issues / Bugs / Requests to be kindly taken up there.