- The mastery of FreeMail — Use popular services like Gmail, like SMTP, to send HTML templates multiple times with amazing accuracy. Yes, even for complex projects with high stakes.
- Multi—Account Rotation - Deploy multiple Gmail accounts in a consistent manner, automatically alternating them so that everything runs smoothly, quietly, and smoothly.
- Dynamic Email Topics — Choose from a list of random topic headings to maximize uniqueness and engagement — to enhance uniqueness and reduce spam levels.
- Endless variations of templates — upload a folder with HTML templates and use them endlessly, increasing the originality and extending the life of the sender.
- Hidden Mode — Work quietly in the background, compatible with VPN, while your local computer is running smoothly.
- Randomized delivery times — Increase sender's service life and maximize success rates
Mail8er.mp4
When testing a large number of SMTP accounts, the connection may timeout after a series of authentication attempts. Version 2.0 introduces adaptive rate limiting to prevent PROVIDER blockages and connection timeouts.:
Configurable authentication delays (default is 20-35 seconds) Exponential delay retry strategy An automatic circuit breaker that suspends the operation of repeatedly faulty accounts to avoid blockages Real-time terminal control panel with account status information and recovery timers Automatic timeouts detection and dynamic delay scaling New environment variables: AUTH_DELAY_MIN=20 AUTH_DELAY_MAX=35 MAX_AUTH_RETRIES=3 CIRCUIT_BREAKER_THRESHOLD=3 ADAPTIVE_DELAY_ENABLED=true
Deliver more relevant messages and test options safely:
Dynamic content visualization and controlled synonym substitution for natural variation Obfuscating email templates with unique spaces that make each email unique Shuffle sections to create multiple permutations of templates for A/B testing Unique visualization for each message to help test deliverability and measure engagement Time jitter and personalization markers to make sending more natural and relevant
Secure scaling between multiple SMTP accounts:
Rotating accounts with load balancing and automatic failover Authentication and quarantine for bad accounts Daily sending limits for each account and usage tracking Automatic retries and fault tolerance in case of connection problems
help campaigns run smoothly and with respect for recipients:
Customizable dispatch windows (by time zone or schedule) Randomized delays between shipments to avoid predictable patterns Internet connection monitoring before sending Automated archiving of invalid/erroneous recipients and reliable logging
. Quick installation and configuration:
Requirements: pip install python-dotenv dnspython beautifulsoup4 Copy the .env.example to .env and add the SMTP credentials and settings. Do a trial run to view the template options before submitting: python test_obfuscation.py Run the mail client: python mailer.py
Failed shipments are automatically moved to invalid_recipients.csv so that the mail client can continue processing. Constant monitoring of failed SMTP login attempts bad_accounts.txt Built-in retry system and a setup checker to check the configuration before shipping
Supports Gmail, Outlook, and other SMTP providers. Included is the SPF/DKIM/DMARC configuration guide .env is excluded from version control; never commit credentials Designed only for mailing by email with permission — include unsubscribe links and follow applicable laws
Barracuda Mailer is for authorized security testing only. Unauthorized use may violate laws such as the Computer Fraud and Abuse Act (CFAA) or local cybersecurity regulations. Always obtain explicit permission from system owners before testing.
Join our community for discussions and support:
Contributions are welcome! If you have ideas for improving configurations or adding new templates, please submit a pull request. Ensure all contributions align with the educational and ethical goals of this project.
Licensed under the MIT License for educational and authorized security testing purposes only. See LICENSE for details.