Validate every address before you send.
Each email gets checked at the source. Syntax, domain, MX records, and a real SMTP handshake.
- 3-layer verification (syntax + DNS + SMTP)
- Catch-all and disposable detection
- Bounce-rate protection built in
- Runs before every campaign launch
Catch bounces before they happen, protect your sender reputation, and keep landing in the inbox where replies happen. It runs on its own, free, before every send.
Three layers of verification, not just regex. Swokei checks the format, looks up MX records, and pings the inbox.
Knows when a domain accepts everything to mask invalid addresses. These are flagged as uncertain and still sent, since a catch-all address is usually real.
Bad addresses get filtered out before the campaign starts. Lower bounce rate. Higher inbox placement. Cleaner stats.
Every kind of bad address gets caught.
Bounces hurt deliverability for the whole domain. Swokei filters out the addresses that shouldn't be sent to before the campaign even launches.
Format, character set, structure. Anything obviously broken gets flagged immediately, no network request needed.
Does the domain exist and resolve? Catches typos and dead domains before they cost you a hard bounce.
Does the domain have valid mail-exchange records? If no mail server exists, the address is invalid by definition.
Opens a real connection to the receiving server and asks if the inbox exists, without sending an email. Most accurate signal you can get.
Some domains accept any address — useful for the recipient, useless for verification. These get marked separately so you can decide whether to risk it.
Trash-mail, temp-mail, mailinator-style domains get flagged so they're never used in a campaign.
info@, sales@, support@ usually go to a shared inbox. Swokei flags them so you know which leads are a real person versus a general inbox.
Run a list of any size through the verifier without launching a campaign. Export the clean list or use it as a campaign source.
How it works
When you upload a CSV, sync a Sheet, or pull from Lead Gen, Swokei runs each address through three checks before it lands in the campaign.
Format, character set, and structure get validated against RFC rules. Anything obviously broken gets flagged immediately.
The domain is checked for valid mail exchange records. If no mail server exists for the domain, the address is marked invalid.
Swokei opens a connection to the receiving mail server and asks if the inbox exists, without actually sending an email. Catch-all domains get flagged so you know the result is uncertain.
Bad addresses are skipped before they ever go out. They stay flagged on the lead so you can see what happened, they're never sent, and they never count as a bounce. Nothing to review or clean up.
Runs automatically in the background before every send. No step to click, nothing to clean up. Dead addresses are simply skipped for you.
Included free with any paid plan. No per-address fee, no separate credits, ever. It just runs before every send.
Agencies that let Swokei do the outreach
The main thing I like is that the emails actually have something relevant to say. Instead of sending the same pitch to everyone, I can mention their design, SEO or mobile experience without doing the research manually.
Great tool. I'd recommend Swokei to any web designer looking to get more web design clients.
We were already doing outreach for our web design company, but most of the time we were guessing what to say. Now we let Swokei analyze business websites, find real issues, and turn them into personalized emails we can still send at scale.
We run a small web design agency and outreach has always been one of those things we know we need to do but never had enough time for. Swokei made it much easier to keep it consistent.
We send far more outreach than before and it's more personal, not less. That combination just didn't exist for us until this.
One of my employees kept telling me to give Swokei a try. I was pretty skeptical at first, but after using it for a while, it quickly became part of our daily outreach.
Ready to take control of your outreach?
Reads every prospect's site and writes the outreach that lands you the work.