Single opt-in
Single opt-in
Email Marketing
Single opt-in is a signup that adds someone to your list right away, without a confirmation step.
What is Single opt-in?
Single opt-in is the default in most tools: submit the form, and you're subscribed.
Pros: faster list growth and an immediate welcome message. Cons: typos, fake addresses and spam traps get in, which raises bounces and complaints over time.
Make it work: validate addresses at entry, send the welcome email right away (a bounce exposes bad addresses fast), and run a sunset flow for people who never engage.
Example
A checkout box "Email me with news and offers" subscribes the customer the moment the order is placed.
Why Single opt-in Matters
It maximizes signups, but you trade some list quality for it.
Single opt-in FAQ
Is single opt-in legal?
For US email, yes. For texts, you still need prior express written consent under the TCPA.
Single or double opt-in: which is better?
Single grows faster; double gives a cleaner list. Many stores use single for email and double for texts.
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