Double opt‑in without the confirmation email.
Visitors send one short email from their own inbox. Sendity checks the signature of that email, so you know the address is theirs before they leave your page.
- No confirmation link
- No spam folder
- 1 credit per address
One email, sent by them.
The visitor clicks the button
The mail app opens with recipient, subject and code already filled in.
They send the email
From their own address, with one click. Nothing to copy, nothing to type.
Sendity checks and confirms
Code, sender and DKIM signature are checked. Your page shows the confirmation straight away.
Confirmation link or signed email?
| Aspect | Classic double opt-in | With Sendity |
|---|---|---|
| Steps | Fill in the form, open the inbox, find the email, click the link | Click, send the prepared email, done |
| Where it ends | In the inbox, often hours later | On your page, within seconds |
| Spam folder | The confirmation email can land in spam | Nothing is sent to the visitor |
| Evidence | A logged click on a link | An email signed by the sender’s mail server |
Whether this flow replaces your existing double opt-in depends on your legal requirements. Please check with your data protection officer.
More confirmed sign-ups, less waiting.
Confirmed on the spot
The confirmation happens while the visitor is still on your page, not hours later in the inbox.
Signed evidence
Sendity can keep a log of each verification for 30 days, so you can show when and how an address was confirmed.
Contact details on request
At no extra charge, name, company and position can be read from the email signature.
Questions about email confirmation.
What is a DKIM signature?
Most mail providers sign outgoing emails with a digital signature. It shows that the email really comes from the sender’s domain and was not changed on the way.
What if an email has no DKIM signature?
You decide per campaign. With DKIM required, unsigned emails are not confirmed. We recommend keeping it on.
Is this a legally valid double opt-in?
Sendity can log each verification as evidence. Whether it replaces your existing double opt-in depends on your legal requirements, so please check with your data protection officer.
What does it cost?
Each verified email address uses 1 credit. Your first 1,000 credits are free, enough for 1,000 email verifications.
Confirm your next subscriber in seconds.
Try the live demo on your phone. It takes ten seconds.