The unified inbox for cold email. Sendlio pulls every campaign reply — across every account, every domain, every team member — into one searchable, filterable inbox with full pipeline context. Stop tab-switching. Start closing.
Running outbound from 3–5 inboxes means replies land in 3–5 places. Hot leads sit unread because they hit the wrong account. Every minute lost to tab-switching is a minute a competitor books the meeting.
A reply in Gmail tells you nothing. Which campaign triggered it? Which sequence step? Where are they in your pipeline? Without context, every reply is treated the same.
"Interested" in one account is a sticky note. "Meeting booked" is a spreadsheet column. Without standardized statuses, your pipeline lives in your head — and dies when someone else needs to pick up the conversation.
Unibox isn't just an aggregator. It's the control panel for every live conversation in your outbound pipeline. Three outcomes that change how you work.
No more logging into five email accounts. No more digging through campaign dashboards. Every reply lands in Unibox with the campaign name attached, the lead info loaded, and the next action one click away. Built for teams that value their time.
Happy to chat next week — Tuesday or Wednesday work? Between 2pm and 5pm CT is best for me.
Nine built-in statuses cover the full outbound cycle — Lead, Interested, Meeting Booked, Won, Lost, and more. Need something custom? Add unlimited statuses that match how you actually sell. Your inbox becomes a lightweight CRM.
Remember a reply from last week but forgot the sender? Search across sender, recipient, and subject — all at once, instantly. Filter to one campaign, one status, or both. Bulk-delete bounces and out-of-office floods. Keep the inbox clean without one-by-one deletion.
Connect your inboxes, launch a campaign, Unibox captures every reply. You tag leads, close deals, keep moving. No manual sync. No CRM plumbing.
Plug in every email account you send from. AES-256 encryption. Live SMTP + IMAP validation. Unibox starts monitoring replies instantly.
60 secondsEvery response to every campaign lands in Unibox with campaign context, lead info, and a timestamp. Newest first, always.
Real-time captureMark leads Interested, Meeting Booked, Won, Lost — or create custom statuses. Filter to one campaign or one pipeline stage to focus.
One click per leadRespond from within Unibox. Move leads through your pipeline. Bulk-clear noise. Keep moving — no tab-switching, no context loss.
Pipeline velocity| Capability | Email client | Sendlio Unibox |
|---|---|---|
| Unified across all accounts | One account per tab | Every account in one view |
| Campaign context on reply | None | Campaign name on every reply |
| Pipeline statuses | No | 9 built-in + unlimited custom |
| Search by sender + subject | Per account only | Across all replies, all accounts |
| Campaign filter | Not possible | One click, pre-join filtering |
| Primary + Others split | No | Campaign replies vs noise |
| Bulk delete | Per account, per page | Across any filter, one action |
| Lead-level context | Email address only | Full lead data + CSV columns |
Every reply is a live business conversation. We treat your inbox data with the same care banks treat yours. Encrypted at rest. Scoped to your account. Isolated from every other tenant.
"Sendlio is by far the best outreach tool I have ever used. It's reliable, smart, and saves us hours every week."
Sofia Lindstrom
Marketing Consultant
"Since integrating Sendlio, our campaigns have become 10× more efficient. It's smooth, powerful, and doesn't require babysitting."
Luca Moretti
Growth Strategist
"Our agency manages 10+ domains. Sendlio keeps them warm and healthy without lifting a finger. Honestly, it's the best tool we didn't know we needed."
Mateo García
Founder, MailForce
"We stopped worrying about domain reputation after switching to Sendlio. It works in the background and keeps our emails out of spam."
Sam Sen
General Manager
"With Sendlio, cold emails finally reach inboxes — no fluff, no spam. Clean, reliable, and ready for serious senders."
Sarah Sen
Operations Lead
"Sendlio's automation takes care of inbox health so we can focus on outreach. Super easy to use and surprisingly powerful under the hood."
John D'Crouze
B2B Growth Advisor
"Every cold emailer should use Sendlio. It protects your domain, boosts deliverability, and gives confidence with every send."
Niko Tanaka
Sales Director
"Sendlio is by far the best outreach tool I have ever used. It's reliable, smart, and saves us hours every week."
Sofia Lindstrom
Marketing Consultant
"Since integrating Sendlio, our campaigns have become 10× more efficient. It's smooth, powerful, and doesn't require babysitting."
Luca Moretti
Growth Strategist
"Our agency manages 10+ domains. Sendlio keeps them warm and healthy without lifting a finger. Honestly, it's the best tool we didn't know we needed."
Mateo García
Founder, MailForce
"We stopped worrying about domain reputation after switching to Sendlio. It works in the background and keeps our emails out of spam."
Sam Sen
General Manager
"With Sendlio, cold emails finally reach inboxes — no fluff, no spam. Clean, reliable, and ready for serious senders."
Sarah Sen
Operations Lead
"Sendlio's automation takes care of inbox health so we can focus on outreach. Super easy to use and surprisingly powerful under the hood."
John D'Crouze
B2B Growth Advisor
"Every cold emailer should use Sendlio. It protects your domain, boosts deliverability, and gives confidence with every send."
Niko Tanaka
Sales Director
"Sendlio is by far the best outreach tool I have ever used. It's reliable, smart, and saves us hours every week."
Sofia Lindstrom
Marketing Consultant
"Since integrating Sendlio, our campaigns have become 10× more efficient. It's smooth, powerful, and doesn't require babysitting."
Luca Moretti
Growth Strategist
"Our agency manages 10+ domains. Sendlio keeps them warm and healthy without lifting a finger. Honestly, it's the best tool we didn't know we needed."
Mateo García
Founder, MailForce
"We stopped worrying about domain reputation after switching to Sendlio. It works in the background and keeps our emails out of spam."
Sam Sen
General Manager
"With Sendlio, cold emails finally reach inboxes — no fluff, no spam. Clean, reliable, and ready for serious senders."
Sarah Sen
Operations Lead
"Sendlio's automation takes care of inbox health so we can focus on outreach. Super easy to use and surprisingly powerful under the hood."
John D'Crouze
B2B Growth Advisor
"Every cold emailer should use Sendlio. It protects your domain, boosts deliverability, and gives confidence with every send."
Niko Tanaka
Sales Director
No dev jargon. No marketing fog. Real questions with real answers — the same ones we give on sales calls.
No — it augments it. Unibox is built specifically for replies to your outbound campaigns. It shows campaign context, lead details, and pipeline status on every reply — information Gmail and Outlook don't have. Use your email client for normal mail. Use Unibox for outbound replies.
Replies are captured the moment they arrive via IMAP monitoring and queryable immediately. Hit refresh to pull the latest. No delay, no sync lag.
Yes — every reply card shows the campaign name it came from as a badge. Click a campaign in the sidebar to filter all replies to just that campaign. No more guessing which outreach triggered the response.
Nine statuses cover the full outbound cycle: Lead, Interested, Meeting Booked, Meeting Completed, Won, Out of Office, Wrong Person, Not Interested, Lost. Usable immediately with zero setup.
Unlimited custom statuses. Build your pipeline the way you sell — "Demo Requested", "Proposal Sent", "Q3 Follow-Up", "Ghosted" — whatever matches your workflow.
Yes. Each reply appears as its own item, newest first. Search by sender email to see every reply from a specific person in one filtered view.
No. Deleting a reply removes only that reply record. The lead and their campaign data stay intact. Keeps your inbox clean without destroying sales data.
Primary tab surfaces replies linked to your campaigns — the signal. Others tab shows untracked or external replies that hit your connected inboxes. Keeps campaign replies actionable and noise separated.
