AUTO-OPTIMIZATION

    Your sequences improve in real time.

    Sendio runs continuous A/B tests on every message in your sequence. It distributes sends across variants and shifts volume to the ones that get replies. No setup, no analysis.

    HOW A/B TESTING WORKS

    Automatic A/B testing that never stops.

    From day one, every message step in your sequence can have up to five variants. Different hooks, different value props, different sign offs. Sendio distributes sends across them and shifts more volume to the variants that get replies.

    No setup required. Add a Message B inside any step and Sendio starts testing immediately. Sends and replies are tracked per variant in real time.

    • Up to five variants per message.

      Add A, B, C, D, E inside any message step in the sequence builder.

    • Real time send and reply tracking.

      Every variant has its own counters, visible inline in the node.

    • Automatic weighting.

      Sendio uses Thompson Sampling to send more to variants that get replies, less to the ones that don't.

    Send message

    Hi {firstName}, I've been exploring some interesting ideas in {headline} and your profile really resonated. Would love to connect!

    AI Suggestion
    Daiana
    Preview
    Variant performance
    Step 2 · Send message
    Live
    • A
      124 sent·38 replies
      30.6%
    • B
      88 sent·22 replies
      25%
    • C
      30 sent·5 replies
      16.7%
    Send distributionUpdated 2m ago
    A66%B25%C9%
    WHAT GETS TRACKED

    Every metric that matters. Nothing that doesn't.

    Sendio focuses on the metrics that connect directly to pipeline. Reply rate per variant, send volume per variant, and which variants are pulling their weight. The kind of numbers you can act on.

    • Reply rate per variant.

      Total replies divided by sends, calculated live for every variant in every step.

    • Send distribution.

      See how Thompson Sampling is allocating volume across your variants over time.

    • Intent score per reply.

      Every incoming reply gets scored by signal volume, recency, and ICP match, so you know which replies are worth your time.

    AUTOMATIC OPTIMIZATION

    Winners get more volume. Automatically.

    Most A/B testing requires someone to check results, decide what to do, and manually update campaigns. Nobody does it consistently. Sendio removes the human step entirely.

    Every time a variant sends and gets a reply, Sendio updates its weight. Better performing variants get more volume on the next batch. Worse performing variants get less. Your reply rate improves continuously, with zero effort from your team.

    • Thompson Sampling.

      A proven algorithm used by Google, Netflix, and major ad platforms. It balances exploration and exploitation without arbitrary thresholds.

    • Continuous learning.

      Every send and every reply updates the weights. The longer the campaign runs, the better Sendio gets at picking winners.

    • Full visibility.

      Sends, replies, and current weight visible per variant inside every message step. No hidden math.

    Thompson Sampling
    Send weight, last 8 batches
    ABC
    AVariant
    66%+32
    BVariant
    25%-8
    CVariant
    9%-24
    Batch 1Batch 8

    Variant A climbed from 34% to 66% of sends as replies came in. C keeps a small share so the algorithm keeps exploring.

    Let the data decide what works.

    14-day free trial. No credit card. Reply rate improves from week one.