Professional managing SSL certificate reminder emails and expiry alerts

SSL Reminder Emails for Certificate Expiry

(Just Like Let's Encrypt Used To Send)

Set SSL reminder emails at any stage of your certificates' lifespan. From 30 days before expiry down to 1 hour. See which certificates qualify before you enable each threshold, so you only get the reminders you need.

Key Benefits

  • Expiry notifications before downtime
  • See which certificates qualify before enabling alerts
  • Prevent alert fatigue with smart qualification counts
  • Day-based and hour-based precision timing

How SSL Reminder Emails Work

ChillSSL checks your certificates multiple times a day. When a certificate reaches your chosen reminder point, you'll get an SSL reminder email right away.

SSL Certificate Expiry Reminder Email Example showing certificate details, expiry date, and threshold alert

Recommended SSL Reminder Thresholds by Certificate Lifespan

Every environment is different. Choose the reminder schedule that fits your certificate type, from 1-year commercial to 6-day Let's Encrypt, or combine them for complete coverage.

1 Year (365 days)

Commercial SSL, Extended Validation

Day-Based Reminders

Early warning weeks or days before expiration

30, 14, 7, 3, 1 days

Hour-Based Reminders

Precise final countdown for tight renewal windows

Optional: 12, 6, 3, 1 hours

90 Days

Let's Encrypt, Free SSL

Day-Based Reminders

Early warning weeks or days before expiration

30, 14, 7, 3, 1 days

Hour-Based Reminders

Precise final countdown for tight renewal windows

Optional: 12, 6, 3, 1 hours

30 Days

Short-lived enterprise certificates

Day-Based Reminders

Early warning weeks or days before expiration

14, 7, 5, 3, 2, 1 days

Hour-Based Reminders

Precise final countdown for tight renewal windows

12, 6, 3, 1 hours

6 Days

Ultra-short Let's Encrypt

Day-Based Reminders

Early warning weeks or days before expiration

6, 3, 2, 1 days

Hour-Based Reminders

Precise final countdown for tight renewal windows

12, 6, 3, 1 hours

Certificate Qualification Counts for Smart Monitoring

See exactly which certificates will be covered or missed by each reminder threshold before you enable it. Essential for mixed-lifespan portfolios where you're monitoring both short-lived (6-day) and long-lived (1-year) certificates. A 30-day reminder will never trigger for a 6-day certificate, so you'll know you need more granular thresholds like 3 days or 6 hours.

Certificate Qualification Counts showing 85 of 94 certificates will qualify for 30-day threshold and 0 certificates will qualify for 120-day threshold

Why This Matters

Luke is monitoring a mixed SSL portfolio of 5 short-lived certificates (6-day lifespan), 50 Let's Encrypt certificates (90-day lifespan), and 10 commercial certificates (365-day lifespan).

30-Day Threshold

Count Preview:

"60 of your 65 certificates will qualify"

What's Covered:

50 Let's Encrypt (90-day) + 10 commercial (365-day)

What's Missed:

5 short-lived certificates (6-day lifespan never reaches 30 days)

Solution:

Add 3-day threshold for short-lived certificates

14-Day Threshold

Count Preview:

"60 of your 65 certificates will qualify"

What's Covered:

50 Let's Encrypt (90-day) + 10 commercial (365-day)

What's Missed:

5 short-lived certificates (6-day lifespan never reaches 14 days)

Solution:

Add 3-day or 6-hour threshold for short-lived certificates

3-Day Threshold

Count Preview:

"65 of your 65 certificates will qualify"

What's Covered:

Universal coverage: all certificate lifespans included

What's Missed:

Nothing: complete portfolio coverage

Result:

No blind spots: every certificate gets a reminder

Key Insight: If Luke just enables 30 or 14 day reminder emails, he might miss crucial reminders for his shorter certificates. But with custom expiry thresholds, he can set a 3 day reminder and capture everything, including his short-lived certs. The qualification count preview shows him exactly which certificates need more granular thresholds before he enables them.

Frequently Asked Questions About SSL Reminder Emails

Get answers to common questions about SSL certificate expiry reminders and threshold alerts.

An SSL reminder is an email alert sent before a certificate expires, giving you time to renew before visitors see a security warning. Chill SSL lets you set multiple reminder points (30 days, 7 days, 12 hours, and more) so you get the SSL expiry reminders you need without alert fatigue.
SSL reminder emails are sent at specific time points before your certificate expires. You configure thresholds like "30 days before expiry" or "3 days before expiry" and we automatically send you an email when a certificate reaches that point. Each threshold shows how many of your certificates will qualify before you enable it.
Day-based alerts fire when a certificate is a specific number of days from expiry (e.g., 30, 14, 7, 3, 1 days). Hour-based alerts provide finer precision in the final hours before expiry (e.g., 12, 6, 3, 1 hours). Hour-based alerts are particularly useful for short-lived certificates and critical production systems where you need immediate awareness.
Before you enable any expiry threshold, we show you a count of how many certificates in your portfolio will qualify for that alert. This lets you see at a glance whether a threshold makes sense for your setup. For example, a 30-day threshold might catch 0 of your 90-day Let's Encrypt certificates today, helping you choose thresholds that actually matter.
Yes. You can enable multiple thresholds and each certificate will receive a reminder email at each threshold point it reaches. For example, with 30-day, 14-day, 7-day, and 1-day thresholds enabled, a 1-year commercial certificate will receive up to 4 reminder emails as it approaches expiry.
Yes, absolutely. Let's Encrypt certificates have a 90-day lifespan and auto-renew at 60 days. Our SSL reminder emails are perfect for confirming that auto-renewal succeeded. Enable a 30-day threshold and if you receive an alert, you know the renewal didn't happen as expected. We also support the new 6-day ultra-short Let's Encrypt certificates.
We read the actual expiry date directly from your certificate during each scan. Alerts are triggered based on real certificate data, not estimates. Since we scan multiple times per day, threshold alerts are typically delivered within hours of the threshold being reached.
Each threshold sends its own alert, so multiple reminders give you multiple chances to act. If a certificate does expire, you can enable Status Change Alerts to receive an 'Expired' notification immediately. You can also enable custom post-expiry thresholds to track and document the expired certificate for compliance purposes.
While we don't send test emails, each threshold shows a live qualification count: how many of your current certificates would receive an alert if you enabled it now. This lets you evaluate whether a threshold is useful before committing. You can also add and remove thresholds at any time from your dashboard.

Related SSL resources

Never Miss an SSL Certificate Expiration

Set up SSL reminder emails tailored to your certificate portfolio to prevent downtime. See which certificates qualify before enabling each threshold.

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