Free email warmup. Unlimited mailboxes. No card.
New mailboxes land in spam because providers don’t trust them yet. Connect yours and it starts exchanging ordinary emails with other mailboxes in the network, building trust day by day.
Mailbox health
alex@mail.brightlane.test
Healthy
98% inbox
hello@mail.brightlane.test
Healthy
95% inbox
daniel@outreach.brightlane.test
Healthy
89% inbox
priya@outreach.brightlane.test
Slowed by AI
72% inbox
team@studio.brightlane.test
Warming (day 4 of 21)
Warming
What free warmup does
Every mailbox you connect joins the free warmup network: mailboxes exchange ordinary emails, open them, reply, and move them out of spam, building your sender reputation day by day.
Unlimited mailboxes
Warm up as many mailboxes as you own. There’s no warmup plan to buy.
Health score
A 0–100 score per mailbox: the share of its warmup emails that landed in the inbox over 14 days.
Gradual ramp-up
Starts at 2 warmup emails a day and adds 2 a day up to 40 by default. You can set the ceiling (5–80), ramp (1–10) and reply rate (10–60%).
Clean network
Mailboxes paused for high bounces leave the warmup network automatically.
Runs alongside campaigns
Warmup keeps going while you send, which keeps reputation steady.
Hidden from your inbox
Warmup emails never appear in the team inbox.
Why it’s free
Warmup works better the more mailboxes take part. Every mailbox you connect makes the network stronger for everyone, including you. We make money when your emails send, and you can start whenever you’re ready, for a few cents.
Day 1
Mailbox connected, warmup starts at 2 emails a day.
Week 2
Volume climbs by 2 a day, to about 26. Your health score appears once there’s enough placement data.
Week 3 onward
Warmup levels off at 40 a day and keeps running alongside your campaigns.
Honest limits
What warmup doesn’t do, and what it needs from you.
- Warmup builds reputation slowly; it can’t undo a blocklisting or make a bought list safe.
- The health score reflects warmup emails inside the network, not every inbox your leads use. Placement tests, coming soon, will cover that.
- The warmup network is made of Inboxed customers’ own mailboxes, so it’s small while Inboxed is new.
Questions
What is email warmup?
Warmup builds a new mailbox’s reputation by exchanging a small, rising number of ordinary emails with other mailboxes that open them, reply, and move them out of spam.
How much does warmup cost?
Nothing. Warmup is free for every mailbox you connect to Inboxed, with no limit on mailboxes.
Will warmup emails clutter my inbox?
Warmup emails are recognized automatically and never shown in the Inboxed team inbox. They do arrive in the mailbox itself, like any email.
How long should I warm up before sending campaigns?
Two to four weeks for a new mailbox. Warmup keeps running at a low level after you start sending, which keeps your reputation steady.
What is the health score?
A 0 to 100 score per mailbox: the share of its warmup emails that landed in the inbox over the last 14 days.
Works with the rest of Inboxed
- Deliverability suiteDNS and blocklist checks, DMARC report uploads, one-click unsubscribe; placement tests coming soon.
- Unlimited mailboxesConnect as many mailboxes as you like and rotate sending across them safely.
- Email verifierFree lead checks for every campaign lead before it’s sent, and a free public checker.
Warm up today. Launch when you’re ready. Pay only for emails that send.
No subscription and no card to start. Warmup and verification are free; emails cost $1 per 1,000 as they send.