Warm up a new mailbox first
A new mailbox sends a few short emails a day to other mailboxes connected to colding, and a little more each day. That earns it sending volume. It doesn't promise where your emails land.
For now we open each account by hand and answer by email. If your mail app doesn't open, write to us at [email protected].
What it does
Mail providers don't trust a new address that suddenly sends a lot. With warmup on, your new mailbox sends a few short emails a day to mailboxes that other colding customers connected, and receives some back.
These emails never hold your contacts or your campaigns, and they don't count toward your daily sends.
Warmup builds sending volume, one day at a time. It doesn't buy a place in the inbox. No one can promise where an email lands, and we don't.
Warmup emails a day, at most
Moving our catch-up
I need to push our catch-up back by a day, if that's okay with you. Someone is coming to fix the boiler and they only gave me a rough window, so I have to stay home for it. The usual time still works for me.
How it works
Connect the mailbox. Warmup starts only once the address is confirmed as yours.
We read the sending domain's SPF and DMARC records. They tell receivers that mail from your domain is really yours. If one is missing, warmup goes on for 72 hours, then waits until you add it.
Someone with the send permission turns warmup on, in the console or through your agent.
On day one the mailbox sends up to 10 warmup emails. Each day adds 1, up to 40. It never sends more than there are other mailboxes to write to.
Those mailboxes open some emails, answer some, flag some and move some out of spam. Yours does the same for theirs.
Every hour we count how many of its warmup emails landed in spam and how many of its own emails were refused for good. The mailbox gets a band: Healthy, Watch, Slowed down, Quarantined or Blocked.
What you control
- Start, pause or stop
- Pause keeps the mailbox's place in the ramp. Stop takes it out of warmup, and the ramp starts again from day one.
- Hours, days and reply rate
- Pick the hours it writes in, between 08:00 and 22:00, the weekdays, and how often it answers another mailbox instead of starting a conversation. Stopping warmup keeps these settings.
- Receive only
- A mailbox can join only to receive. Other mailboxes write to it, and it sends no warmup of its own. That suits an inbox you keep to see where mail lands.
- Where it shows
- Warmup emails it receives are filed in a folder of your mailbox, named in your workspace's language: Warmup, Aquecimento or Calentamiento. They never show in the colding inbox or count toward your daily sends.
- Who can start it
- Starting warmup needs the send permission. A key without it can read how warmup is going, but can't start it.
- What each band does
- Watch and Slowed down send less, with more time between emails. Quarantined and Blocked send and receive no warmup until their term ends. Your ordinary mail keeps arriving in every band.
Limits
- Warmup emails a day
- 10 on day one, up to 40, 1 more each day
- While a campaign uses the mailbox
- Up to 5 a day
- Hours it can write in
- Between 08:00 and 22:00
- Spam reading
- The last 7 days, once 20 warmup emails have gone
- Quarantine
- 7 days
- Block
- 30 to 90 days
- Resting from campaigns
- Until healthy for 72 hours in a row
- First campaign day
- Up to 20 after 14 days of warmup, then 5 more each day
- Time to fix SPF and DMARC
- 72 hours
- Mailboxes
- 2 to 500, by plan
Gmail and Microsoft don't tell a sender who marked an email as spam. So the Warmup tab says no data for spam reports, never zero. Each band comes with the reading that set it.
Where to go next
- Connect and follow a mailbox
Read a mailbox's warmup from your code, and ask an owner to connect one.
- Why a new mailbox starts slowly
What a new mailbox's first weeks look like, and what warmup can and can't do.
- SPF, DKIM and DMARC, one record at a time
The three DNS records to set up, and the two that warmup checks.
- Campaigns
What a warmed mailbox does once a campaign starts.
- Pricing
How many mailboxes each plan allows.
- Ask for access
For now we open each account by hand and answer by email. If your mail app doesn't open, write to us at [email protected].