Smartlead campaigns that keep their volume
If you send through Smartlead, this is for you. sending.ac mailboxes connect to Smartlead natively, reconnect on their own and get replaced when one burns, so the volume your campaigns plan for keeps going out.
- 213K mailboxes under management
Lost mailboxes quietly shrink what a campaign sends
Reconnects arrive every 90 days
Microsoft asks mailboxes to reconnect roughly every 90 days. Across a few hundred mailboxes that is a steady drip of disconnects, each one sending nothing until someone notices.
A burned domain leaves a hole
New domains, new DNS, another warm-up period. Roughly three weeks pass before the replacement earns its keep, and the campaign runs short the whole time.
The reply rate moves last
Reputation slips in week one, placement shifts in week three, replies drop in week five. By the time the number moves, the mailbox has been struggling for a month.
One reconnect wave, two different weeks
An example weekReconnecting by hand
Microsoft asks a batch of mailboxes to reconnect. They drop out of rotation.
Smartlead keeps sending from the mailboxes left. The campaign sends less.
Someone finds the disconnect list.
Reconnects by hand, one mailbox at a time.
Microsoft asks a batch of mailboxes to reconnect. sending.ac reconnects them automatically.
They stay in your Smartlead rotation.
Risk Level flags try-outreach.co and a backup domain is promoted.
The campaign sent the volume it planned.
How the volume holds
Campaigns, sequences and rotation stay in Smartlead. sending.ac keeps the mailboxes underneath them connected and replaceable.
Reconnects handled before they become gaps
When a mailbox needs to reconnect, sending.ac does it automatically. The mailbox stays in your Smartlead rotation and nobody has to chase a disconnect list.
- Automatic mailbox reconnects
- Mailboxes bought elsewhere connect for free
- Premium warm-up pool, admitted on reputation
Replaced before the burn reaches replies
Risk Level, sending.ac's own signal built from sending data, flags a mailbox ahead of your reply rate. A backup takes its place, and mailbox insurance covers a full replacement within 30 days. Insurance is free and in early access.
- Risk Level flags try-outreach.coBefore the reply rate moves
- A backup domain is promotedreach-outreach.co, already warmed
- Its mailboxes connect to SmartleadRotation keeps its size
- Insurance covers the burned mailboxFull replacement within 30 days
One account under every sequencer you run
If your team or your clients run more than Smartlead, every sequencer sits on the same account, with the same checks on every domain.
- Native connections to all four
- Mailboxes bought elsewhere connect for free
- 7 checks per domain, every day
SmartleadNative
InstantlyNative
PlusVibeNative
EmailBisonNativeTeams running outbound on sending.ac
Can confirm. We actually tested them, and performed next to Winnr the best. Good on Yannic Schwock
Setup was fast, DNS and DKIM handled automatically, and each domain runs on its own isolated tenant so a burned domain stays contained.
Btw, you guys have the smoothest UX/UI of all the inbox resellers I’ve purchased from. And I’ve worked with ALL of them.
From one order to sending in Smartlead
Order domains and mailboxes
Any TLD, and up to 75 mailboxes per domain on Azure.
DNS, set up for you
SPF, DKIM and DMARC are written and verified per domain before the first send. The first domain set can be live the day you sign up.
Connect to Smartlead
The mailboxes connect natively and arrive ready for your sequences. Warm-up takes its usual few weeks, checked from outside the tool doing the warming.
Questions Smartlead users ask
Most of these are faster on a 15-minute call with someone who already knows the answer.
Talk to an advisorDo my campaigns move out of Smartlead?
No. Campaigns, sequences and rotation stay in Smartlead. sending.ac works on the mailboxes underneath them.
Can I connect mailboxes I already have?
Yes. Mailboxes bought anywhere else connect for free. You only pay for what you provision through sending.ac.
What happens when Microsoft asks for a reconnect?
sending.ac reconnects the mailbox automatically, and it stays in your Smartlead rotation.
What happens when a mailbox burns?
Risk Level flags it from sending data before the reply rate shows it. Mailbox insurance replaces it within 30 days at no extra cost, even if it was bought elsewhere. Insurance is free and in early access.
How fast can I start sending?
Domains, DNS and mailboxes are set up automatically, so the first domain set can be live the day you sign up. Warm-up still takes its usual few weeks.
Do my mailboxes get the premium warm-up pool?
The premium warm-up pool admits mailboxes on reputation, and sending.ac mailboxes qualify.
Start sending today.
Mailboxes, domains and DNS in one order, live the same day. Bring the sequencer you already run.
- 350 Azure mailboxes included
- $0.55/mo for each mailbox after that
- Around 1,500 outreach emails a day
- Connects natively to Smartlead
- Mailbox insurance, free in early access
- Two months free when you pay yearly