Top 3 C++ Mail Projects

mfcmapi

2 703 7.3 C++

MFCMAPI

Project mention: Undeletable calendars | reddit.com/r/Office365 | 2023-01-23

Not sure if this is the same problem, but I've had users with stuck calendars and ghost delegations that were created in older versions of Outlook and I resolved it by hard-deleting them with MFC MAPI: https://github.com/stephenegriffin/mfcmapi
astroid

2 574 0.0 C++

A graphical threads-with-tags style, lightweight and fast, e-mail client for Notmuch

Project mention: Going completely Mouse-free | reddit.com/r/vim | 2022-08-14

astroid is a good keyboard-driven mail client.
Sonar

www.sonarsource.com
sponsored

Write Clean C++ Code. Always.. Sonar helps you commit clean C++ code every time. With over 550 unique rules to find C++ bugs, code smells & vulnerabilities, Sonar finds the issues while you focus on the work.
ESP-Mail-Client

6 118 9.0 C++

⚡️Arduino E-Mail Client Library to send, read and get incoming Email notification for ESP32, ESP8266, SAMD21 and Raspberry Pi Pico (RP2040) devices. The library also supported other Arduino devices using Clients interfaces e.g. WiFiClient, EthernetClient, and GSMClient.

Project mention: Email trigger for spinning light thing.. | reddit.com/r/arduino | 2022-11-14

Shot in the dark here - take a look at ESP-Mail-Client and see if you can use it to check/read mail and grab subject lines and/or other info to act upon.

NOTE: The open source projects on this list are ordered by number of github stars. The number of mentions indicates repo mentiontions in the last 12 Months or since we started tracking (Dec 2020). The latest post mention was on 2023-01-23.