Why are my MailerLite emails not sending?

MailerLite email delivery failures can have multiple causes: (1) MailerLite platform outage — check status.mailerlite.com. (2) Sending quota reached — MailerLite plans have daily and monthly send limits. (3) Domain authentication issues — ensure your SPF, DKIM, and DMARC DNS records are correctly configured for your sending domain. (4) Account under review — MailerLite may pause new accounts to verify content compliance. (5) Campaign stuck in sending — large subscriber lists take time to process.

How do I get notified when MailerLite goes down?

Subscribe to email notifications at status.mailerlite.com to receive immediate alerts when MailerLite reports incidents. For transactional email integrations using MailerLite's API, set up an independent delivery monitor that tests email sending on a schedule and alerts you if delivery fails — this catches issues faster than waiting for a status page update.

Will my MailerLite emails be lost during an outage?

MailerLite queues emails during outages and delivers them once service is restored. However, delays can be significant. For time-sensitive automated emails (welcome emails, purchase receipts), consider monitoring your delivery rates independently and having a fallback provider configured.

Does MailerLite have an API I can monitor?

Yes. MailerLite's API is available at connect.mailerlite.com/api. You can make an authenticated GET request to the /subscribers endpoint to test API responsiveness. A 200 response confirms the API is operational. MailerLite v2 API endpoints also remain available at api.mailerlite.com/api/v2/ for users on the legacy platform.

MailerLite / Email Marketing Platform

MailerLite Status: How to Check If MailerLite Is Down Right Now (2026)

Updated June 2026 · 7 min read · API Status Check

Quick Answer

Check MailerLite status at status.mailerlite.com (official) for real-time platform availability. MailerLite covers email campaigns, automations, landing pages, forms, and the API.

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The Official MailerLite Status Page

MailerLite maintains an official status page at status.mailerlite.com. It tracks availability for MailerLite's core services:

Email Campaigns: The bulk email sending engine for newsletters and broadcast campaigns to subscriber lists. Campaign delivery outages delay scheduled sends. Large campaigns take time to process even under normal conditions — a send showing as delayed is not always a platform outage.

Email Automations: MailerLite's workflow automation engine that triggers emails based on subscriber actions — welcome sequences, purchase follow-ups, re-engagement flows. Automation outages stop triggered emails from firing even when campaigns continue working normally.

Transactional Email (API): The MailerLite API at connect.mailerlite.com/api for programmatic subscriber management and email sending. Used by developers integrating MailerLite into web applications. API outages block subscriber syncs and programmatic sends.

Landing Pages & Forms: MailerLite's hosted landing pages and embedded signup forms. These use MailerLite's CDN and hosting — outages make landing pages inaccessible and break embedded form submissions, blocking new subscriber capture.

Web Dashboard (app.mailerlite.com): The main MailerLite interface for managing campaigns, subscribers, and automations. Dashboard outages prevent campaign creation and management, though email sending scheduled before the outage typically continues.

Subscriber Management: The underlying database for subscriber lists, segments, and contact records. Outages affect list imports, subscriber sync, and segmentation — but may not stop in-progress campaign sends that are already queued.

What Each MailerLite Status Means

Operational: All MailerLite services are working normally. Campaigns send on schedule, automations fire correctly, and the dashboard is accessible. If your emails are still not delivering, the issue is likely with your sender domain authentication, sending quota, or subscriber list quality.

Degraded Performance: MailerLite is experiencing elevated delays. Campaign sends are processing but slower than normal. Automation trigger delays may mean welcome emails arrive minutes after subscription. Time-sensitive automations are most affected by degraded performance.

Partial Outage: A specific MailerLite service is affected. For example, automations may be paused while manual campaigns continue sending, or landing pages may be down while the dashboard and email sending continue normally. Check status.mailerlite.com to identify which component is affected.

Major Outage: MailerLite's core platform is down. Campaign sending is failing, automations are not triggering, and the dashboard may be inaccessible. MailerLite queues emails during major outages and sends them once service recovers — but delays can be hours.

Under Maintenance: Planned maintenance window. MailerLite schedules maintenance during off-peak hours with advance notice. Campaigns scheduled during maintenance may be delayed or held until maintenance completes.

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Why MailerLite Outages Affect Your Email Marketing

MailerLite outages affect both transactional automations and scheduled marketing campaigns — two very different failure modes:

Welcome Email Automations Stop Firing

When a new subscriber joins your list and MailerLite's automation engine is down, the welcome email doesn't send. This is particularly damaging for creator businesses where the welcome email delivers a lead magnet, product discount, or onboarding content. New subscribers who don't receive what they signed up for unsubscribe quickly. Check automation delivery rates during suspected outages.

Scheduled Campaigns Miss Their Send Window

If you've scheduled a promotional campaign for a specific time (a product launch, a flash sale) and MailerLite goes down during the send window, the campaign may be delayed by hours. Unlike transactional email failures that affect individual users, a delayed campaign email can miss the entire point of time-sensitive marketing.

Landing Page Outages Block New Subscriber Capture

MailerLite landing pages and embedded forms depend on MailerLite's hosting infrastructure. When landing pages go down, your signup forms stop working. This is especially damaging if you're running paid ads sending traffic to a MailerLite-hosted landing page — you're paying for clicks that can't convert.

Distinguishing MailerLite Outages from Deliverability Issues

Not all email problems are MailerLite outages. If MailerLite's status page shows green but your campaigns aren't reaching inboxes, the problem is likely deliverability: emails going to spam, recipient servers filtering your domain, or DKIM/SPF misconfiguration. Test by sending a campaign to your own email address — if it arrives (even in spam), MailerLite is delivering. Check Gmail's Postmaster Tools for your domain reputation.

5 Ways to Check MailerLite Status Right Now

Official MailerLite Status Page

Visit status.mailerlite.com for real-time status across all MailerLite services. Subscribe to email notifications to receive immediate incident alerts.

status.mailerlite.com →

Send a Test Campaign

Log in to app.mailerlite.com and create a test campaign to a small segment (just yourself). If it sends and delivers within a few minutes, the platform is operational. This distinguishes a MailerLite platform outage from a deliverability issue.

Test the MailerLite API Directly

Developers can test the MailerLite API to confirm service availability.

# Test MailerLite API (v3 — replace YOUR_API_TOKEN)
curl -s -o /dev/null -w "%{http_code} — %{time_total}s\n" \
  https://connect.mailerlite.com/api/subscribers \
  -H "Authorization: Bearer YOUR_API_TOKEN" \
  -H "Content-Type: application/json"

# 200 = API healthy and authenticated
# 401 = API responding (token invalid, but platform is up)
# 503/timeout = MailerLite API is degraded or down

# Quick connectivity check (no auth required)
curl -s -o /dev/null -w "%{http_code}\n" \
  https://connect.mailerlite.com/api

X/Twitter Search

Search 'MailerLite down' or 'MailerLite not sending' on X. Email marketers report delivery issues quickly. You'll typically see community reports within minutes of any significant outage.

Search X for 'mailerlite down' →

Contact MailerLite Support

MailerLite provides support via the in-app chat and email at support@mailerlite.com. For outages affecting campaign sends, include your campaign ID, scheduled send time, and subscriber list size for faster diagnosis.

Common MailerLite Errors and What They Mean

These are the errors and symptoms users experience when MailerLite is having issues:

"Campaign stuck in "Sending" status for hours"Large campaigns take time to process, but if a campaign shows 'Sending' with no progress after 2+ hours, MailerLite's campaign engine may be experiencing delays. Check status.mailerlite.com. For campaigns under 10,000 subscribers, normal sending should complete within 1-2 hours. Contact support if it stalls completely.

"MailerLite API returning 429 Too Many Requests"You've hit MailerLite's API rate limit. This is not a platform outage — it's a per-minute request cap. MailerLite's v3 API limits requests to 120 per minute. Implement exponential backoff in your integration and batch subscriber operations where possible.

"MailerLite API returning 503 Service Unavailable"MailerLite's API servers are experiencing an outage. Check status.mailerlite.com to confirm. Subscriber syncs and programmatic email sends will fail until the service recovers. Implement retry logic in your application.

"Automation emails not triggering after subscriber action"Check status.mailerlite.com for the Automations component. If the status page shows green, verify your automation is active and the trigger condition is correctly configured. MailerLite automations can also be paused if your account's sending limit is reached.

"MailerLite landing page returns 404 or is unreachable"Check status.mailerlite.com for the Landing Pages component. If you've recently changed your custom domain or MailerLite domain settings, DNS propagation may cause temporary unavailability. If the status page shows degraded Landing Pages, this is a platform issue — not a configuration problem.

"Emails delivered but opening in spam folder"This is a deliverability issue, not a platform outage. Check that your sending domain has SPF and DKIM records configured (verify in MailerLite under Settings > Domains). Review your email content for spam triggers. Check Gmail Postmaster Tools for your domain's reputation score. MailerLite's status page showing green means the platform sent your email — inbox placement depends on your domain reputation.

What to Do When MailerLite Is Down

Immediate Response

Confirm at status.mailerlite.com whether it's campaigns, automations, or the full platform
Pause paid ads sending traffic to MailerLite landing pages during outages
Delay time-sensitive campaign sends until the platform recovers
Alert your team and note when the outage started for postmortem purposes
For critical automations, manually send emails to new subscribers who joined during the outage

Long-Term Resilience

Host critical landing pages on your own domain, not MailerLite's domain, to avoid single-point failures
Maintain a backup email list export so subscriber data isn't solely in MailerLite
Use a secondary transactional provider (Postmark, Resend) for truly critical emails
Monitor MailerLite API response times independently to detect degraded performance early
Subscribe to status.mailerlite.com alerts for immediate incident notifications

Frequently Asked Questions

Where is the official MailerLite status page?

MailerLite's official status page is at status.mailerlite.com. It tracks the MailerLite email campaign engine, automation workflows, API, landing pages, forms, and dashboard separately — so you can identify which specific service is affected during an incident.

How reliable is MailerLite compared to Mailchimp and Brevo?

MailerLite, Mailchimp, and Brevo all target 99.9%+ uptime for email sending infrastructure. MailerLite is particularly popular for its clean UI and generous free tier (up to 1,000 subscribers). For reliability, all three platforms are comparable for typical use cases. Brevo has stronger transactional email capabilities; Mailchimp has better integrations and a larger ecosystem.

Does MailerLite have an SLA?

MailerLite does not publicly advertise specific SLA uptime guarantees for standard plans. Enterprise and agency plans may include SLA commitments — contact MailerLite directly to discuss. For critical email marketing operations, maintaining a list export and a backup sending provider is more reliable than depending on contractual SLAs.

Is MailerLite Classic (v2) still supported?

MailerLite launched MailerLite New (v3) and migrated users from the Classic platform. The v2 API at api.mailerlite.com/api/v2/ remains available for legacy integrations, but new integrations should use the v3 API at connect.mailerlite.com/api. Status page incidents typically affect both v2 and v3 platforms simultaneously.

How long do MailerLite outages typically last?

Most MailerLite incidents are resolved within 1-4 hours based on historical status page data. Major outages affecting core email sending are rare. Partial outages affecting specific features (landing pages, automation triggers) tend to be resolved faster than core campaign sending issues.

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