There are 2 repositories under fake-mail topic.
Send Mail Anonymously with this Script
Most Powerful Send Fake Mail Using Any Mail I'd undetectable
The highly customizable ruby SMTP-Server and SMTP-Service library with builtin support for AUTH and SSL/STARTTLS, 8BITMIME and SMTPUTF8, IPv4 and IPv6 and additional features.
GENERATE TEMPORARY EMAIL ADDRESSES & RECEIVE MESSAGES
All Email Spoofing including all domains which 100% lands inbox.
Email Spoofing Tool is a Python Script that helps to Spoof Email Addresses, The mail spoofed by this tool lands 100% on inbox and the tool is very easy to use. The email will be received with orginal user's logo.
Email Spoofer, Fake Credit Cards - Address - IP Address
Simple python lib for https://inboxkitten.com
simple API base pyrogram fake mail gen bot source code here !
A python telegram bot that can create Temp mail with API of 1secmail.com
Simple fake mail generator with Julia