AskOptimus is the outbound platform for humans and their AI agents — find verified emails, run AI-personalized sequences, and let an MCP-connected agent do the same. This blog covers outbound playbooks, email deliverability research, and product updates from the team building it.
By Thursday morning, I couldn’t send a single email. My domain had been flagged by Gmail, Microsoft, and every major ISP. My bounce rate hit 12%. My open rates plummeted to 0.5%. And worse – all my future emails from that domain, even personal ones, were landing in spam.
I did that for three months. I sent over 4,000 emails. My reply rate hovered around 1.8%.
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Practical outbound playbooks, email deliverability research, and product updates from the team building AskOptimus — the outbound platform for humans and their AI agents. Topics include email verification, lead discovery, cold email deliverability, and using MCP-connected agents for outbound.
New playbooks and product updates go up on a rolling basis, typically every one to two weeks. Subscribe below to get new posts by email.
Articles are written by the AskOptimus product and growth team, drawing on data from our own email verification and sequencing infrastructure. Every article carries an author byline and a publish date.
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