Before each campaign if they are or more than months apart. For double opt-in lists: Once a month for weekly or daily campaigns. A check before each campaign for monthly and quarterly campaigns. Why so frequent? Role or Company Changes: Your target decision-maker might no longer be in the same position—or even at the same company. Company Turnovers, Mergers, or Closures: Businesses evolve, merge, or cease operations, making contacts obsolete. : Work email addresses often have a short shelf life, leading to frequent changes. If you neglect regular verification it impacts your deliverability.
You risk sending emails to invalid addresses, harming hong kong email list your sender reputation, and—worst of all—landing in spam folders. How often should you verify a BC Email List? BC email lists may decay slower than BB lists, but that doesn’t mean you can neglect them. Unlike professionals who frequently change jobs in BB scenarios, BC contacts often use personal email addresses they’ve had for years, making them relatively more stable. How Often To Verify Email Lists - (Best Practices + Case Study) However, issues like hard bounces, spam complaints, and inactive subscribers can still sneak in over time if the list isn’t monitored.
Here’s a quick guide for keeping your BC list healthy: For Single Opt-In Lists: Verify every - days for weekly or frequent campaigns. For campaigns spaced months apart or more, verify before every campaign. For Double Opt-In Lists: Once every quarter is sufficient if campaigns are sent weekly or regularly. Quarterly check for monthly or less frequent campaigns. Why is this necessary? BC subscribers often lose interest, abandon inboxes, or switch email providers, leading to inactive accounts. Many sign up with temporary or fake emails just to snag discounts or freebies. Coupled with high expectations—where subscribers may unsubscribe or mark emails as spam if content feels irrelevant—consistent verification ensures your campaigns stay effective and reach engaged recipients.