79 lines
2.3 KiB
Markdown
79 lines
2.3 KiB
Markdown
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# SMTP Client Example
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The Example is SMTP client demo. It sends and email with attachment to recipient.
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## How to use the example
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### Configure the project
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```
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idf.py menuconfig
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```
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* Configure Wi-Fi or Ethernet under "Example Connection Configuration" menu. See "Establishing Wi-Fi or Ethernet Connection" section in [examples/protocols/README.md](../README.md) for more details.
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Please set the following parameters under example config for SMTP client demo to work:
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- Email server, port, sender's email ID, password, recipient's email ID.
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### Build and Flash
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Build the project and flash it to the board, then run monitor tool to view serial output:
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```
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idf.py -p PORT flash monitor
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```
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(Replace PORT with the name of the serial port to use.)
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(To exit the serial monitor, type ``Ctrl-]``.)
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See the Getting Started Guide for full steps to configure and use ESP-IDF to build projects.
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## Example output
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```
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I (3212) smtp_example: Loading the CA root certificate...
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I (3212) smtp_example: Setting hostname for TLS session...
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I (3222) smtp_example: Setting up the SSL/TLS structure...
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I (3232) smtp_example: Connecting to smtp.googlemail.com:587...
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I (3542) smtp_example: Connected.
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220 smtp.googlemail.com ESMTP r62sm20390571pfc.89 - gsmtp
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I (3952) smtp_example: Writing EHLO to server...
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250-smtp.googlemail.com at your service, [182.75.158.118]
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250-SIZE 35882577
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250-8BITMIME
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250-STARTTLS
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250-ENHANCEDSTATUSCOD
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ES
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250-PIPELINING
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250-CHUNKING
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250 SMTPUTF8
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I (4262) smtp_example: Writing STARTTLS to server...
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220 2.0.0 Ready to start TLS
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I (4562) smtp_example: Performing the SSL/TLS handshake...
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I (5692) smtp_example: Verifying peer X.509 certificate...
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I (5692) smtp_example: Certificate verified.
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I (5692) smtp_example: Cipher suite is TLS-ECDHE-RSA-WITH-AES-128-GCM-SHA256
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I (5702) smtp_example: Authentication...
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I (5702) smtp_example: Write AUTH LOGIN
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I (6002) smtp_example: Write USER NAME
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I (6302) smtp_example: Write PASSWORD
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I (6822) smtp_example: Write MAIL FROM
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I (7132) smtp_example: Write RCPT
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I (7432) smtp_example: Write DATA
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I (8252) smtp_example: Write Content
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I (10202) smtp_example: Email sent!
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```
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## Note:
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- You might need to enable permission for less secure apps from email provider. This is because these email providers (e.g. gmail) insist on OAUTH authorization.
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