How often should I verify my newsletter list?

At least every quarter for active lists, and before any large send after a long gap.

Does verification remove inactive subscribers?

No. It identifies addresses that cannot receive mail. Inactive but valid subscribers need a re-engagement or sunset policy.

Yes, for consent and quality. Verification and double opt-in do different jobs and work well together.

Lists decay: people change jobs, abandon inboxes and mistype at signup. A regular verification pass keeps your newsletter landing where it should.

1
Export your subscribers
Export from your newsletter platform as CSV.
2
Verify
Upload to MailSure and download the valid addresses.
3
Then deal with inactivity
Verification finds addresses that cannot receive mail. Separately, consider a sunset policy for subscribers who never open.

Fewer dead addresses means your engagement numbers reflect real readers.

Low bounce rates keep mailbox providers trusting your domain.

Run it before big sends or on a schedule, using the monthly free allowance for smaller lists.

See how the price compares in the pricing comparison, or try the free email checker first.

How often should I verify my newsletter list?: At least every quarter for active lists, and before any large send after a long gap.
Does verification remove inactive subscribers?: No. It identifies addresses that cannot receive mail. Inactive but valid subscribers need a re-engagement or sunset policy.
Is double opt-in still needed?: Yes, for consent and quality. Verification and double opt-in do different jobs and work well together.