Senders.co

Senders is the partner for teams serious about deliverability. Bring on a team of email engineers who take responsibility for your sending: more of your email lands in the inbox, your reputation stays healthy under volume, and deliverability stops being the thing your team worries about.

✨ Apollo Certified Agency Partner for Email Deliverability

We're not Apollo. We're the deliverability layer Apollo points companies to when getting email into the inbox becomes the hard part.

In a deliverability crisis right now? Volume collapsed, reputation sliding, prospects telling you their emails are landing in spam? Get a senior operator on it fast, with triage, containment, and a recovery plan in place.

Senders at a glance:

• Kept ~100 B2B companies in the inbox last year, across ~30 million emails and nearly every vertical
• Clients range from Seed to Series B+, backed by Greylock, Y Combinator, Foundation Capital, Sass, retail, and others
• Every account makes us sharper on the next one

What we do:

• Respond when something breaks: crisis triage within hours, plus redundancy plans so less goes wrong in the first place
• Enable more daily volume, safely. Push the sends the business needs without self-imposed limits, for B2B and consumer inboxes alike
• Absorb volume surges of 2–3x on a known schedule, without retraining your reputation
• Embedded deliverability expert: A senior operator in your Slack, Teams, and on your calls. Not a ticket queue, not an agency handoff. Someone who knows your stack, your domains, and the shape of your sends, and flags risk before it surfaces.

Senders is not an outsourced SDR/BDR service, and we don't price like one.