Powering the world's best teams From next-gen startups to established enterprises.
Trusted by forward-thinking teams worldwide
Spectrum predicts each prospect's response to your content, framing, and writing style, crafts multiple variants, and auto-sends the winner.
Spectrum simulates how each contact will respond to your content, tone, and framing—before you hit send.
AI rewrites your draft into dozens of data-backed versions and scores every line for reply likelihood.
Spectrum automatically sends the top-scoring variant and feeds live reply data back into the model for continuous improvement.
Live AI tests matched customer feedback with a 93% success rate in predicting which messages resonate.
We analyze twice as many cultural signals, so every subject line, hook, and frame hits the right note.
Our psychographic and behavioral dataset with 20 billion points creates one-to-one messaging at infinite scale.
60 emails/month; bring your own leads
Unlimited leads + 300 emails/month
Unlimited leads + 1000 emails/month