Email: connect your mailbox and check it lands

Email is one of the outreach channels Klaudius can use; you choose which ones and the order it tries them in. For email, Klaudius sends your outreach from a mailbox you own and watches it for replies. Businesses see that address as the sender, so use a domain you control, your own or your business's, rather than your personal address.

Connect your mailbox

Setup asks who hosts your mailbox. Most providers want an app password: a separate, single-purpose password your provider issues for apps like Klaudius, different from the one you sign in with.

Provider in setup	What to give Klaudius
Gmail	An app password. Google only offers these once 2-step verification is on.
Fastmail	An app password, whatever your two-step setting.
Outlook / Office 365	Nothing to paste. At the end of setup you sign in to Microsoft once in your browser and approve Klaudius reading and sending your mail. Withdraw access at account.microsoft.com, or myapps.microsoft.com for a work account.
Zoho Mail	An app password. Zoho's free plan doesn't include mail-app access for new accounts, so you need a paid plan.
IONOS	Your normal mailbox password, or an app password if you've turned on two-step verification.
Titan (123 Reg, Hostinger, Name.com…)	Your normal mailbox password. In Titan webmail, Enable Titan on Other Apps must be on and two-factor authentication off, or every sign-in is refused.
Custom / other	Your provider's server details and whichever password it expects; an app password where it offers one.

IONOS, Zoho and Titan run different mail servers depending on where you signed up. Pick the standard servers; if they reject your sign-in, setup tries the other regions for you.

Sending as a Google Workspace alias? Put the alias in Email address and the main address the app password belongs to in Sign-in username (only if different from the address).

Your password stays on your own computer and goes nowhere but your email provider. To change mailbox later, use Settings → Change setup → Email. Your From name and folder names are under Settings → Email sending; get the Sent folder right, because follow-ups read it to see what was already sent. If you change the address you send from, tell Klaudius your old address too, so follow-ups can tell your earlier messages from replies.

Check your mail lands

Ask Klaudius to check your email deliverability. After telling you, it sends one test message from your mailbox to itself and reports the SPF, DKIM and DMARC verdicts the receiving mail service stamped on it, the authoritative answer to whether your domain authenticates. If that's inconclusive, it asks for a second address you can open. Then it checks your domain's DNS and gives you the exact record to paste at your registrar for anything that needs fixing. On a free address, such as one ending @gmail.com, there's no DNS of yours to fix.

Run it at setup, and again whenever replies dry up. It can't tell you whether mail is quietly filtered in other people's inboxes, and nothing measures that honestly: inbox-placement tests send to dormant seed accounts that never reply, which flatters the numbers. Verify authentication, and watch your reply rate over time. Visit alerts give you a real-world signal sooner: businesses you've pitched that stay at Not yet in the Seen column in Pipeline may not be getting your emails.

Gmail's Promotions tab isn't spam: the mail was delivered. Sender history matters most, and a new domain builds it as people reply; sending less doesn't move you out of the tab.

No warm-up, no unsubscribe link

Warm-up pools are a remedy for bulk sending, and the big mail providers now detect them, so Klaudius doesn't use one. Its outreach already has the shape mail services leave alone: plain text, one link, no tracking pixel, sent one at a time, each message and link unique to that business.

An unsubscribe footer or header marks a message as bulk mail. Instead, every message invites the business in a plain sentence to say if they'd rather not hear more, and a reply asking to stop ends the follow-ups for good.

Volume and sending hours

Keep each mailbox to roughly 20 to 40 outreach messages a day, building up gradually on a new domain. To keep cold emails to working hours, tick Emails too under Settings → Pipeline settings → Sending hours; emails to businesses that haven't written to you then wait until it's inside your hours where the business is.

More than one mailbox

Ask Klaudius to add another sending mailbox and it checks it with a test send to your own address. New pitches then take turns across your mailboxes, and follow-ups always go from the one that sent the first message. More mailboxes spread your sending; they don't make a higher volume safe. Extra mailboxes need a password-based provider, since the Microsoft browser sign-in works for your main mailbox only. If one is on a new domain, ask Klaudius to check that domain's DNS too.