Everything in PostOwl.in

A complete email sending toolkit. Runs entirely on your computer.

📨

Send to a list in minutes

  • Upload a CSV from Excel or Google Sheets — or pick a saved group of contacts.
  • PostOwl detects columns automatically.
  • Review exactly how the first email looks before anything sends.
📁 Import contacts
✓ contacts_q2.csv (300 rows)
Detected columns:
first_namelast_nameemailcompanyrole
Preview — first recipient
To: sarah@acme.com
Subject: Hi Sarah, interview invite
✍️

Personalise every email automatically

  • Use {{first_name}}, {{company}}, or any column in your file.
  • Each recipient gets their own version — no copy-paste, no mail-merge macros.
✍️ Email template
Hi {{first_name}},

We'd love to have {{company}} join us...
↓ Rendered for recipient 1
Hi Sarah,

We'd love to have Acme Corp join us...
📝

10 starter templates included

  • Hiring: interview invitation, job offer, application update, rejection.
  • Sales: cold outreach, demo follow-up.
  • Events: invitation, reminder.
  • Marketing: welcome email, monthly newsletter.
  • Edit any template and save it as your own.
📝 Templates
Interview Invitation
Hiring
Use →
Job Offer Letter
Hiring
Use →
Cold Outreach
Sales
Use →
Event Invitation
Events
Use →
Monthly Newsletter
Marketing
Use →
👥

Contacts and groups — import once, reuse forever

  • Import from any CSV. Extra columns become personalisation fields.
  • Organise into groups. Send to a group in one click — no re-uploading.
👥 Contacts
All Contacts847
Q2 Candidates142
Event Guests300
Newsletter List405
📊

Track every send, retry failures instantly

  • Per-recipient status: sent, failed, pending.
  • Plain-English error descriptions — no cryptic codes.
  • Retry one or all failures with one click.
📊 Campaign: Q2 Outreach
Progress285 / 300
281
Sent
4
Failed
15
Pending
4 failed · Retry all →
✗ bob@old-domain.io — mailbox not found
🔒

Your data never leaves your computer

  • No cloud sync, no account required, no telemetry (unless you opt in to anonymous analytics).
  • All contacts, templates, and credentials stored locally, encrypted.
🔒 Data location
macOS
~/Library/Application Support/PostOwl/
Windows
%APPDATA%\PostOwl\
Encrypted at rest
No PostOwl servers. Ever.

Ready to try PostOwl.in?

Download it free. No sign-up. No credit card.

🍎 Download for Mac →🪟 Download for Windows