There are 5 repositories under apple-mail topic.
Email tracker, read receipt and spy pixel blocker plugin for macOS Mail (10.11-13.x)
:whale: :wrench: Provides Autodiscover capabilities for IMAP/POP/SMTP/LDAP services on Microsoft Outlook/Apple Mail and Autoconfig capabilities for Thunderbird
Quoting Outlook style headers and Signatures for Mail.app
Email tracker, read receipt and spy pixel blocking macOS Mail extension
📨 One-liners for installing HTML signatures.
Spam filter for Apple's Mail.app
📨 Apple Mail HTML signatures made simple
Bitmessage docker container with IMAP and SMTP interfaces. To be used with Thunderbird or Apple Mail.
A simple app to save a little time when installing an HTML signature in Apple Mail.
Parse & extract Mail app (Mac OS) emails & save to structured CSV or JSON
EmailSmurfer - Extract email addresses from email header on Apple Mail (OSX)
Migration app for Apple's Mail.app to Simplenote note-storing service
Autodiscover email configuration for popular email clients
A Java library for looking up published mailserver configurations for clients for a given domain.
Applet to create events in iCal from Mail messages
Convert your designed HTML into a beautiful Apple Mail signature.
Popclip extension to open Airmail URLs in Apple Mail
Latest version of GPGMail for macOS without DRM.
An Apple Mail extension for GPG-based encryption and signing