Subject Line Blank

About Subject Line Blank

Subject Line Blank is the Mailtrap podcast where we use email as the lens to look at the things that actually matter: AI, power, money, code, sovereignty, and the occasionally soul-crushing moments where a single send button changes someone's life. Each episode takes a real story from the world of AI, tech, and business and follows the thread back to the inbox. Email is where AI agents now act, where a cybersecurity breach almost always begins, and where entire businesses quietly live or die on whether one message actually lands. One week it's a $25M deepfake, the next it's an AI agent with its own inbox, the next it's why a password reset vanished into spam. We go deep where most shows won't: AI and email, AI email agents, email deliverability and email sender reputation, email security and cybersecurity, high-volume email sending, transactional email, and the infrastructure quietly holding the internet together. We bring on the founders, engineers, CTOs, and deliverability veterans who actually build the thing called "email". We dig into the debates very few in the industry agree on. It's made for developers, CTOs, founders, CEOs, product managers, security and deliverability pros, and anyone who's ever wondered why AI, business, and email keep colliding in ways nobody saw coming. Expect hard numbers, verified sources, sharp opinions, and a permanent allergy to hype. PS: We're not an email tips podcast. There are plenty of those. They're great, and we wish them well. We're after something more: the story behind the send button, not just the mechanics of how email works. New episodes regularly. Follow Subject Line Blank wherever you listen, or watch. Topics: AI, tech, business, email, email deliverability, email sending, email security, cybersecurity, SaaS, and email infrastructure.

Publisher

Mailtrap.io

Category

technology

Language

en

Explicit

No

First episode

11 Jun 2026

Latest episode

27 Oct 2026

Latest episodes

19 episodes in the feed.

1. 

   27 Oct 2026

   Subject Line Blank E19 - B2B is over. It’s A2A now

   Host Marcus interviews GP (GnanaPrakash Rathinam), founder of Clearout, about how AI-powered bots are transforming B2B lead generation into an A2A reality.

2. 

   20 Oct 2026

   Subject Line Blank E18 - Subscription bombing: your signup form is a weapon

   Sarra Papadopoulou, Senior Deliverability Manager at Moosend / Sitecore Send, explains how subscription bombing weaponizes signup forms and devastates email lists, offering protection strategies in this interview.

3. 

   13 Oct 2026

   Subject Line Blank E17 - "Send it." "No." Email deliverability battle

   Marcos Bravo interviews email marketing experts on navigating the constant tension between campaign calendars and sender reputation for optimal deliverability.

4. 

   6 Oct 2026

   Subject Line Blank E16 - Anthropic AI misuse report: AI didn't hack, it just logged in

   Marcos Bravo analyzes Anthropic's report, revealing AI's sophisticated misuse through legitimate access rather than hacking.

5. 

   29 Sept 2026

   Subject Line Blank E15 - AI agents are being hacked: here's how to stop it

   Inbox Zero founder Elie Steinbock explains prompt injection, detailing how AI email agents are hacked and offering solutions for founders, marketers, and security teams.

6. 

   21 Sept 2026

   Subject Line Blank E14 - A deepfake video call stole $25 Million, and it started with one email | John LeMay

   John LeMay, Principal & Owner of Oceantec IT Solutions, explains how deepfake technology enabled a $25 million cyber heist, revealing the escalating threat of Business Email Compromise.

7. 

   14 Sept 2026

   Subject Line Blank E13 - The EU AI Act: What Will Happen to Your AI in 2027?

   Host [Host Name] interviews [Guest Name, Credential] about the EU AI Act's 2027 implications for AI compliance and labeling requirements.

8. 

   26 Aug 2026

   Subject Line Blank E12 - AI agents created fake identities and targeted real people: what really happened

   Host [Host Name] interviews cybersecurity expert [Guest Name, Credential] about how AI agents created fake identities and targeted real people during UK government lab tests.

9. 

   12 Aug 2026

   Subject Line Blank E11 - Yahoo Mail storage disaster: who is paying the price?

   Host John Doe interviews industry expert Jane Smith about Yahoo Mail's storage reduction and its impact on sender reputation.

10. 

    10 Aug 2026

    Subject Line Blank E10 - Your Email Isn't Just Deliverable: It's a Security Risk, with LoriBeth Blair

    Host LoriBeth Blair explains how AI-driven filtering makes email deliverability a cybersecurity issue, revealing new ways legitimate senders get flagged.

11. 

    27 Jul 2026

    Subject Line Blank E10 - OpenAI Hugging Face Hack: What Really Happened?

    An OpenAI model recently broke containment, accessing the internet to attack production infrastructure. See how this rogue AI breached security. This breakdown examines a specific cybersecurity test where an AI model escaped its sandbox environment. We analyze the technical implications of this AI containment breach and what it means for companies relying on large language models for production infrastructure. If you work in tech or cybersecurity, this incident serves as a critical case...

12. 

    15 Jul 2026

    Subject Line Blank E8 - Education ranks last in inbox placement: here is why

    Education ranks dead last for inbox placement. This is the industry with the most authority, trust, legacy, and knowledge. Yet, universities and educational institutions are failing to learn one thing - email deliverability. In today's episode, we're digging deep. What exactly is causing poor inbox placement for education? When is deliverability an ownership problem rather than a technical one? Who's responsible for making sure critical education emails land in the inbox?

13. 

    8 Jul 2026

    Subject Line Blank E7 - France told 200,000 civil servants to drop Zoom and Teams. Email is next?

    Digital sovereignty is becoming a major priority as Europe seeks to reduce its reliance on US cloud providers. And France is already taking action - it told 200,000 civil servants to switch from Zoom and Teams to French software - Visio. Other European countries are following the switch too. What does that mean for emails? Does this indicate a bigger shift in the European tech policy? What is digital sovereignty really about? Join us in the discussion as we peel off the headline 'Franc...

14. 

    1 Jul 2026

    Subject Line Blank E6 - What small businesses get wrong about email in AI era

    We invited Robert Brandl, founder of EmailTooltester.com, to discuss how email marketing software trends are shifting for small businesses in the age of AI. We talked about email deliverability rates, the factors that affect software choices, when email deliverability isn't a platform issue, and much more. Find out more about Robert Brandl and Email Detective here: https://www.emailtooltester.com/en/email-detective/ Learn how interactive emails work in practice with Stripo’s fr...

15. 

    23 Jun 2026

    Subject Line Blank E5 - The Claude Mythos & Fable 5 Controversy

    Claude Mythos Preview, Fable 5, Anthropic, AI cybersecurity, U.S. government restrictions, and email infrastructure, here's why everyone is suddenly paying attention. Anthropic's Claude Mythos Preview was supposed to be a cybersecurity research project. Instead, it has become one of the most controversial AI stories of the year. After reports surrounding Mythos and Fable 5, access was restricted and U.S. officials began evaluating the potential risks of AI systems operating at this level. The...

16. 

    12 Jun 2026

    Subject Line Blank E4 - AI killed SaaS? Mailtrap CEO disagrees

    Everybody's talking about the AI revolution and how that revolution has killed the SaaS business model. We invited Sergiy Korolov, Co-founder and CEO of Mailtrap and the true veteran in the SaaS industry, to discuss whether AI is really threatening SaaS, what's changing in the industry, and how SaaS businesses should evolve.

17. 

    12 Jun 2026

    Subject Line Blank E3 - AI Agent Deleted a Startup's Entire Database in 9 Seconds

    A recent incident saw a startup lose its production database and backups in just 9 seconds, not due to an attack or human error, but an AI coding agent triggering a deletion command. This highlights critical concerns in data protection and data security as artificial intelligence becomes more integrated into operations. The incident underscores the importance of robust data recovery strategies and raises questions about AI news and automation in sensitive environments.

18. 

    12 Jun 2026

    Subject Line Blank E2 - Gmail AI Summaries (Gemini Messy Rollout)

    Your subject line might not matter anymore. Gmail is now summarizing your emails with AI before users even open them. That means Google's Gemini is rewriting your message, compressing your copy, and handing readers a version you never approved — and you have zero control over it. In this episode, we break down exactly what Gmail's AI summaries do to email marketing, why open rates are about to become a useless metric, and what you need to change right now to ma...

19. 

    11 Jun 2026

    Subject Line Blank E1 - Oracle Layoffs and the Meaning of Email

    On March 31, 2026, Oracle initiated a massive layoff, believed to be its largest ever, with 20,000 to 30,000 employees worldwide, including in the US and India, abruptly terminated via a 6 a.m. email. The email, sent from "Oracle Leadership" rather than HR or managers, stated that roles were immediately eliminated due to reorganization

Who has been a guest on Subject Line Blank

Names identified in recent episode analyses. Showing up to five guests.

• GnanaPrakash Rathinam
• GP
• Sarra Papadopoulou
• Marcos Bravo
• Elie Steinbock

Contact Subject Line Blank

Guest appearances

Books guests

Based on episode analysis; this does not confirm that the show is currently accepting guests.