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Google requires an App Password — your normal password will not work.
Workspace admins: if App Passwords are hidden, allow them under Security → 2-Step Verification.
Your Microsoft 365 admin must enable Authenticated SMTP for the mailbox (Admin center → Users → Mail → Manage email apps). Server smtp.office365.com, port 587. With MFA on, use an app password.
Use the outgoing (SMTP) server, port and username your host gives you — usually the full email address. Port 587 uses STARTTLS; 465 uses SSL. Add the IMAP server under Advanced so replies, bounces and warm-up work.
These DNS records prove your emails are really from you. Your email provider gives you the SPF and DKIM values; add them at your domain's DNS host, plus a DMARC record such as v=DMARC1; p=none; rua=mailto:you@yourdomain.com. Check them on the Domains page. Gmail and Yahoo require all three for bulk senders.
Turn on warm-up for at least two mailboxes. They exchange short notes, starting at 10 a day and growing by one a day. Give a brand-new mailbox two to three weeks before sending campaigns at full volume, and keep warm-up running afterwards.
Start at 30–50 emails a day per mailbox and 3–6 minutes between emails. Spread volume over several mailboxes rather than pushing one harder. The Free plan allows 50 emails a day per workspace.
New workspaces start lower and grow automatically: 20 a day until day 7, 50 a day until day 14, 100 a day until day 21, 250 a day until day 28, then your plan's limit. This keeps a brand-new account from damaging its mailboxes — and everyone else's — before it has a track record.
Campaigns pause themselves when more than 5% of emails bounce (judged after 30 sends). Bounced addresses are already on your suppression list; check where the rest of the list came from, then press Resume. Only sends after resuming count.
If a workspace's bounce rate stays high or recipients report abuse, sending is put on hold until we review it. Everything else keeps working; email support to request a review.
Create a template from HTML (including code from ChatGPT or Claude — paste the whole answer), Markdown, plain text, or an uploaded .html/.md/.txt file.
Merge tags: {{First Name}} {{Company}} {{Email}}. Spintax {Hi|Hello} picks one option per email. %%unsubscribe%% becomes the one-click unsubscribe link.
Only an Email column is required. Recognised columns include First Name, Last Name, Company, Job Title, Country, City, Website, LinkedIn, Phone and Group. Duplicates, unsubscribed and bounced addresses are skipped automatically.
A campaign is a sequence of up to 8 emails. Step 1 starts the conversation; each later step waits the number of days you set after the previous email. Leave a follow-up's subject blank and it goes out as a reply in the same thread (“Re: …”) from the same mailbox — that usually gets the most replies.
When a lead replies, the rest of their sequence is cancelled automatically. Replies are found by reading the sending mailbox every few minutes; out-of-office replies don't count. You can also stop everyone else at the same company when one person replies.
Every step can have up to four variants (A–D) with their own subject and text. Leads are split evenly and each one always gets the same variant. The campaign page shows sends, opens and replies per variant, and marks the leader once every variant has 20 sends.
Pick more than one mailbox and leads are spread across them. Each mailbox pauses between emails (the pace you set) and stops at its own daily limit, so three mailboxes send three times as much without any one of them looking like a bulk sender.
Turn on business hours to send only on the days and times you choose, in your leads' time zone. Outside the window the campaign simply waits; nothing is skipped.
Every email has a one-click unsubscribe link and header. When someone opts out — or an address hard-bounces — it goes on your workspace's suppression list and is never emailed again from any campaign. Opt-outs cannot be removed. You can add or export addresses under Settings → Suppression list.
Relevant, one-to-one business outreach to people you have a lawful basis to contact. See the Acceptable Use Policy. Accounts that spam or harvest lists are suspended.
Settings → Team. Owners control everything; Admins manage people, mailboxes and settings; Editors run campaigns, templates and leads; Viewers can only look. Each workspace keeps its own data.
Delete a workspace under Settings → Workspace, or your whole account under Settings → Profile. Deletion is permanent. For anything else, email support@kaysid.app.
Tell us what you tried and include your workspace name. We reply within one business day.